CN211534911U - Wax bite mould for scanning - Google Patents

Abstract

The utility model provides a wax bite model is used in scanning that has improved precision and reliability, this wax bite model is used in scanning considers by operator's interlock vertical distance and aligns and register a plurality of images that obtain for the design tooth restoration, and dispose between implantation target portion and involution target portion and correspond and form with the standard dental arch profile that has already set for, the wax bite model is used in scanning includes: a variable fitting portion having a margin exceeding the width of the implantation target portion, softened by heat treatment at a temperature equal to or higher than a preset temperature, pressure-corrected to fit the outer surface contour of the implantation target portion, and formed of a paraffin material; and a mastication protrusion which is integrated with the variable anastomosis portion, protrudes so as to correspond to the target portion, and softens and is corrected to be engaged with the target portion when heat-treated at a temperature not lower than a predetermined temperature.

Description

Wax bite mould for scanning

Technical Field

The present invention relates to a wax bite (scanning male wax-bite) for scanning, and more particularly, to a wax bite for scanning which improves precision and reliability.

Background

Generally, a dental restoration (dental restoration) refers to an intraoral artificial periodontal tissue that artificially restores the shape and function of a defective tooth.

In detail, in the case where natural teeth are left without, distortion of dentition occurs between adjacent teeth and apposed teeth of the missing teeth to cause deformation of facial image and reduction of masticatory function, thereby increasing inconvenience in daily life. Moreover, when the natural tooth loss continues for a long period of time, alveolar bone surrounding the lost tooth is absorbed into the body, and it is difficult to install artificial periodontal tissue.

In this case, the dental restoration is placed in the oral cavity to restore the masticatory function and prevent the deformation or damage of the teeth remaining on the target arch side of the teeth to be treated or the dental restoration. Here, the dental restoration may be provided as an artificial crown (crown) that is individually matched to a missing tooth, or may be provided instead of a plurality of or all of the missing teeth on the target arch side. Such a dental restoration is made of titanium or the like having no rejection response to the human body to replace a missing tooth root and is fixed to the oral cavity by an implant (fixture) implanted into an alveolar bone.

Therefore, the dental restoration can be stably used because the dental restoration does not have a factor of secondary generation of dental caries. In addition, since the tooth has a structure substantially the same as that of a natural tooth, there is no pain of the gum and no foreign body sensation, and the tooth can be used semi-permanently as long as it is properly managed.

On the other hand, in order to design the above-described dental restoration to be suitable for each person to be operated and to be set at an accurate position, accurate and precise oral information is required. For this reason, internal tissue information such as oral surface information and alveolar bone shape and bone density is required. Therefore, an image registration process of acquiring three-dimensional contour images and three-dimensional images corresponding to the maxilla and mandible of the operator and aligning and registering them corresponding to the bite vertical distance is required.

Specifically, the three-dimensional outline image is acquired by collecting information scanned along the oral cavity of the operator by the oral scanner. In this case, the three-dimensional outline image shows a distortion of the dentition curvature that is different from the actual oral cavity in the process of collecting the scanned information. Therefore, work is required to correct the distorted dentition curvature in the three-dimensional figure image based on the three-dimensional image acquired by CT imaging.

In order to prepare an implant suitable for a target arch of a subject and set a height of the dental restoration, it is preferable that the three-dimensional image is acquired by CT imaging with respect to an occlusal vertical distance of the subject in a state of the upper and lower jaw occlusion.

However, in the case where at least one arch of the upper and lower jaws is a partial or complete edentulous jaw in which most of the teeth are missing, there is a problem in that it is difficult to separate the upper and lower jaws corresponding to the vertical bite distance suitable for the operator. Therefore, in order to align and register the three-dimensional outline image and the three-dimensional image with the occlusion vertical distance, a process of accurately calculating the occlusion vertical distance is required.

Specifically, conventional methods for calculating the vertical occlusion distance of the operator include a method for calculating the vertical occlusion distance using an articulator after taking an impression, a method using a tracer, and a method using a splint customized to the operator.

First, in the method of using the articulator after taking the impression, the impression of the oral cavity is taken after the impression material is filled in the tray, and the vertical occlusal distance is calculated by adjusting the distance between the articulators using the plaster model thus made. This method requires an impression to be taken and a plaster model or the like to be made, and thus has a complicated procedure, and the vertical occlusion distance is not directly calculated from the oral cavity of the operator, which causes a problem of lowering the accuracy.

Further, with the method using the tragraph, after the needle and the trace board are respectively set to the upper and lower jaws, the separation distance is adjusted in consideration of the relationship between the jaws and the bite vertical distance is calculated. With this method, there is an inconvenience that the operator must open and close the oral cavity repeatedly in performing the adjustment of the height of the needle in a manner corresponding to the bite vertical distance.

In addition, a plaster model is separately prepared in order to accurately set the trace board to the upper and lower jaws. That is, the positions of the board and needle are arranged in alignment using resin, putty (putty) or wax after the gypsum model is made. Further, since it is necessary to provide a trace board to which resin, putty, or wax is attached in the oral cavity or the like, it takes too much time to measure the vertical bite distance.

Also, with the method using a customized splint, an image of the oral cavity or impression model for the operator is acquired and a splint is individually designed and manufactured based thereon. Next, the wax levee and the resin were laminated and filled on the inner and outer surfaces of the manufactured splint, and then the splint was set in the oral cavity to calculate the vertical occlusal distance. In this method, a step for manufacturing a splint, a step for acquiring an image using the manufactured splint, and the like are required, and thus there is a problem in that the number of times of visits by the operator increases.

In addition, there is an increased probability of errors occurring in the transfer of the impression model or the acquired image to the manufacturer side, and thus there is a problem in that the reliability of the splint manufactured separately is lowered. Moreover, since each of the surgeons customizes the splint, there is a problem in that the overall cost and time required for the dental restoration are increased.

Further, in order to calculate an accurate occlusion vertical distance, a wax bank and resin are stacked and filled on the inner and outer surfaces of the clip plate, and the wax bank and the resin are not attached to the surface of the clip plate but separated and flowed, so that there is a problem that reliability of the acquired occlusion vertical distance is lowered.

On the other hand, a gothic-type bow-graph has been studied and developed to manufacture an artificial crown having an occlusal surface that substantially coincides with the jaw joint of the subject by specifying the jaw position in the horizontal direction corresponding to the occlusal state of the subject when manufacturing the dental restoration.

In detail, a gothic arch in which a needle for acquiring a gothic arch and a needle for recording the gothic arch on the needle are provided outside or inside the oral cavity of a subject to be operated, and the gothic arch which moves and rebounds the jaw joints of the subject is acquired in the past.

However, in order to acquire the gothic arch of the subject, a step of providing and installing a gothic arch scanner corresponding to the oral cavity of the subject is added, and thus there is a problem that it takes too much time to acquire the gothic arch.

SUMMERY OF THE UTILITY MODEL

Technical problem

In order to solve the above problems, the present invention provides a wax bite for scanning, which improves the precision and reliability to solve the problems.

Means for solving the problems

In order to solve the above-mentioned problems, the present invention provides a wax bite model for scanning, which is formed by aligning and registering a plurality of images obtained for designing a dental restoration in consideration of an occlusion vertical distance of an operator, and is disposed between an implantation target portion and a apposition target portion so as to correspond to a standard arch contour that has been set, the wax bite model for scanning including: a variable fitting portion having a margin exceeding the width of the implantation target portion, softened by heat treatment at a temperature equal to or higher than a preset temperature, pressure-corrected to fit the outer surface contour of the implantation target portion, and formed of a paraffin material; and a mastication protrusion which is integrated with the variable anastomosis portion, protrudes so as to correspond to the target portion, and softens and is corrected to be engaged with the target portion when heat-treated at a temperature not lower than a predetermined temperature.

Effect of the utility model

The present invention provides the following effects by the above-mentioned solution.

First, since a moving image of a vertical occlusion distance and a three-dimensional movement trajectory of a jaw joint is accurately and rapidly acquired by scanning a wax bite model, accuracy of manufacturing a chewing surface of a dental restoration to be finally manufactured is remarkably improved based on the moving image, and additional correction work of the dental restoration required after the final manufacturing is minimized, thereby remarkably improving surgical convenience.

Second, when the wax bite model for scanning is heated and softened at a temperature equal to or higher than a predetermined temperature, and a moving image of a three-dimensional movement locus of the jaw joint is acquired, the space between the occlusal surfaces of the target portion and the masticatory protruding portion is lubricated to make the flow smooth, so that the accuracy of the moving image acquired by the dynamic scanner can be remarkably improved.

Thirdly, since the smooth surface of the wax bite for scanning formed integrally of a paraffin material is provided with the motion recognition enhancing portion for enhancing the motion recognition, the degree of recognition of the three-dimensional motion trajectory can be significantly improved when the motion scanning is performed by the dynamic scanner.

Fourth, the recognition reduction surface of the wax bite model for scanning is reinforced by the motion recognition enhancing part, and the moving image of the three-dimensional motion trajectory of the jaw joint corresponding to the gothic arch shape is accurately acquired as three-dimensional stereoscopic data, so that the accuracy of the dental restoration to be finally manufactured can be remarkably improved based on this.

Drawings

Fig. 1a and 1b are front and top views projected from a portion of a wax bite for scanning according to an embodiment of the present invention.

Fig. 2 is an explanatory view showing a first modification of the wax bite for scanning according to an embodiment of the present invention.

Fig. 3a and 3b are explanatory views showing a second modification of the wax bite for scanning according to an embodiment of the present invention.

Fig. 4 is a front view showing a third modification of the wax bite for scanning according to an embodiment of the present invention.

Fig. 5 is a front view showing a fourth modification of the wax bite for scanning according to an embodiment of the present invention.

Fig. 6 is a front view showing a fifth modification of the wax bite for scanning according to an embodiment of the present invention.

Fig. 7 is an illustration diagram showing a process of acquiring a moving image using a wax bite for scanning according to an embodiment of the present invention.

Fig. 8 is an explanatory diagram showing a state in which a three-dimensional plan image and a moving image using a wax bite for scanning are superimposed according to an embodiment of the present invention.

Fig. 9 is an explanatory view showing a state in which a three-dimensional plan image and a moving image using a wax bite for scanning are removed according to an embodiment of the present invention.

Fig. 10 is a flow chart illustrating a motion scanning method for manufacturing a dental restoration utilizing a scanning wax bite in accordance with an embodiment of the present invention.

Fig. 11a and 11b are front and top views projected from a portion of a scanning wax bite in accordance with another embodiment of the present invention.

Fig. 12 is a plan view showing a modification of the wax bite for scanning according to another embodiment of the present invention.

Fig. 13 is a sectional illustration view showing a process of correcting a wax bite for scanning according to another embodiment of the present invention.

Fig. 14 is an illustration diagram showing a process of acquiring an integrated scan image using a wax bite for scanning according to another embodiment of the present invention.

Fig. 15 is an illustration diagram showing a process of overlapping a CT image acquired using a wax bite for scanning with an integrated scan image and registering the integrated scan image according to another embodiment of the present invention.

Detailed Description

The best mode of carrying out the present invention will be described in more detail with reference to the accompanying drawings.

Hereinafter, a wax bite for scanning according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

At this time, the present invention can be applied to a partial edentulous jaw or an edentulous jaw in which the occlusion Vertical Distance (VD) is difficult to calculate because the natural tooth loss of at least one side of the upper jaw and the lower jaw is large.

Further, in the present invention, the implantation target portion refers to a jaw actually provided with the wax bite model for scanning and the dental restoration, and the involution target portion is preferably understood as referring to a jaw engaged with the implantation target portion. In the following description and drawings, the implantation target portion includes an impression model prepared to correspond to a lower jaw or a lower jaw of the oral cavity, and the alignment target portion includes an impression model prepared to correspond to an upper jaw or an upper jaw of the oral cavity. Of course, the implant target portion of the present invention may include an upper jaw or an impression model prepared to correspond to the upper jaw and the apposition target portion may include a lower jaw or an impression model prepared to correspond to the lower jaw.

In the present invention, the dental restoration is preferably understood to include a partial/complete prosthesis and a partial/complete denture provided as a set and integrated type, the artificial crown (crown) being provided to individually correspond to a defective tooth, and the plurality of artificial crowns. Such dental restorations can be fixed to the oral cavity by means of dental implants like fixtures and abutments. Here, the fixture and the base may be prepared as one finished product or may be separately manufactured, and the fixture and the base may be provided to have one body. In addition, the dental restoration is preferably designed by the operator in consideration of occlusion with the apposition teeth, but may be designed and manufactured based on standard dentition data standardized and stored in the planning section in some cases.

In the present invention, the operator refers to a patient who needs to restore teeth, and the operator refer to a dental and medical staff who sets a tooth restoration. In addition, the manufacturer side and the manufacturer refer to a dental equipment manufacturer and a dental technician who manufacture/supply the dental restoration and a tool for setting it.

Fig. 1a and 1b are a front view and a plan view of a part of a wax bite for scanning according to an embodiment of the present invention, and fig. 2 is an illustration showing a first modification of the wax bite for scanning according to an embodiment of the present invention. Further, fig. 3a and 3b are explanatory views showing a second modification of the wax bite for scanning according to an embodiment of the present invention, and fig. 4 is a front view showing a third modification of the wax bite for scanning according to an embodiment of the present invention. Further, fig. 5 is a front view showing a fourth modification of the wax bite block for scanning according to an embodiment of the present invention, and fig. 6 is a front view showing a fifth modification of the wax bite block for scanning according to an embodiment of the present invention. Also, fig. 7 is an illustration diagram showing a process of acquiring a moving image using a wax bite for scanning according to an embodiment of the present invention. Further, fig. 8 is an illustration diagram showing a state in which a three-dimensional plan image and a moving image using a wax bite for scanning are superimposed according to an embodiment of the present invention. Further, fig. 9 is an illustrative view showing a state in which a three-dimensional plan image and a moving image using a wax bite for scanning are removed according to an embodiment of the present invention. Also, fig. 10 is a flow chart illustrating a motion scanning method for manufacturing a dental restoration using a wax bite for scanning according to an embodiment of the present invention.

As shown in fig. 1a to 10, the wax bite pieces 310, 310A, 310B for scanning according to one embodiment of the present invention include variable anastomotic portions 311, 313, 315 and masticatory protruding portions 312, 314, 316. In addition, a motion scanning method for manufacturing a dental restoration using a wax bite model according to an embodiment of the present invention includes a series of steps of preparing the wax bite model (s410), softening the wax bite model by heat treatment and engaging a chewing protrusion and an apposition object portion with each other (s420), acquiring a moving image (s430), and overlapping the moving image with a virtual chewing surface included in design information of the dental restoration (s 440).

Here, the wax jaws 310, 310A, and 310B for scanning are tools disposed between the implantation target portion 2 and the alignment target portion 3, and align and register respective image data acquired to design the dental restoration in consideration of a vertical occlusal distance of an operator.

In this case, the wax jaws 310, 310A, 310B for scanning are preferably provided as a finished product, and are formed of a material that can be corrected in accordance with the vertical bite distance of each of the persons to be operated. Therefore, in the process of acquiring each image data required in designing the dental restoration, the accurate vertical bite distance can be guided by the scanning wax jigs 310, 310A, 310B corrected according to the operator. Here, each image data is preferably understood as a concept including a plurality of scan images and CT images.

The present invention can be implemented by a manufacturing system including an imaging device, a planning unit, and a manufacturing device. Furthermore, the above-mentioned imaging device is preferably understood to include an oral scanner, a computed tomography scanner and a dynamic scanner. Specifically, the oral scanner acquires a plurality of scan images, which are three-dimensional surface information on the implantation target portion 2, the alignment target portion 3, and the outer surfaces of the scanning wax- clenches 310, 310A, and 310B. Then, the CT image, which is internal tissue information such as the shape and density of the alveolar bone of the upper and lower jaw, is acquired by the computed tomography apparatus.

Then, the gothic-arch moving image c30 of the three-dimensional movement locus for the jaw joint of the subject to move in the left-right direction, the front-back direction, and the up-down direction is acquired by the above dynamic scanner. At this time, the moving image c30 is obtained in a state where the outer surface of the implantation target part 2 is exposed and the masticatory protruding parts 312, 314, 316 and the alignment target part 3 are engaged with each other.

The planning unit is preferably a design device that designs the dental restoration based on the image data acquired by the imaging device and stored design information. Moreover, the planning unit can plan implantation of a dental implant such as a fixture for fixing the dental restoration to the oral cavity and an abutment. In addition, the dental restoration by means of a dental implant and a dental restoration can be simulated in a virtual manner on the basis of the planned implantation plan. In addition, the dental restoration can be designed by the planning unit, and the moving image can be displayed on the virtual chewing surface so as to be superimposed on the three-dimensional planning image, thereby removing the superimposed occlusion region.

The manufacturing apparatus is preferably a three-dimensional printer, a milling machine, or the like that performs three-dimensional printing or milling in accordance with the design information of the surgical guide to prepare the dental restoration generated by the planning unit into a real object. Of course, the manufacturing apparatus may further include a mold apparatus prepared in accordance with the designed information.

On the other hand, the wax jaws 310, 310A, 310B for scanning are prepared to be disposed between the implantation target portion 2 and the alignment target portion 3. Here, it is preferable that the wax bite pieces 310, 310A, 310B for scanning are formed by normalizing in correspondence with a preset standard arch outline da, and the variable anastomotic portions 311, 313, 315 and the masticatory protruding portions 312, 314, 316 are integrally formed.

Specifically, the scanning wax jaws 310, 310A, 310B are formed in an arcuate shape as a whole by projecting outer surface portions 312a, 314a, 316a toward the side of occlusion between the implantation target portion 2 and the alignment target portion 3, and recessing inner surface portions 311B, 313B, 315B to a predetermined depth. This arch preferably corresponds to the standard arch profile da described above. Here, the standard arch contour da is preferably understood to be a surface of a region having a predetermined area corresponding to a distance between an outer side and an inner side of a gum portion of an alveolar bone, which is a portion where the surrounding teeth are actually arranged in the implant target portion. In this case, the outer side of the gum portion is preferably understood to be a portion corresponding to the lip (buccal) side and the cheek (buccal) side, and the inner side of the gum portion is preferably understood to be a portion corresponding to the tongue (lingual) side.

Such a standard arch contour da is preferably normalized and calculated taking into account age-and gender-anatomical deviations. In detail, the standard dental arch profile da is calculated according to the step preferably corresponding to the average value of the size of the arch of jaw which can represent each age and sex. Thus, the scanning wax bites 310, 310A, 310B can be prepared in a common manner so as to have a predetermined size. For example, the scanning wax jaws 310, 310A, and 310B can be divided into 6 pieces of maxillary large/medium/small and mandibular large/medium/small, and assembled into a universal standardized product.

That is, the present invention uses the wax bite pieces 310, 310A, 310B for scanning, which are mass-produced as a finished product, to guide the vertical occlusion distance, thereby shortening the time required for calculating the vertical occlusion distance and saving the overall cost in designing the dental restoration, thereby providing economic benefits. Thus, the existing problems of excessive time and expense in calculating the vertical bite distance using a tracer or a custom splint can be eliminated.

In detail, in the case of the above-described trace device, since a separate impression model is required to be accurately set in the oral cavity and the operator who actually adjusts the trace needle is an operator or a manufacturer, there is a difference in the perpendicular bite distance determined by the operator. In addition, in the case of individually customized splints, the information used to design them may reflect inaccurate information due to errors in the process of repeated transmission/transfer between the operator side and the manufacturer side. On the other hand, in the present invention, since the performer who determines the mastication (mastication) feeling and corrects the thickness and shape of the scanning wax jaws 310, 310A, and 310B based on the mastication feeling is actually the operator himself/herself, the optimal perpendicular occlusion distance can be reflected on each operator. Therefore, the precision and accuracy of the dental restoration designed and manufactured based on the accurately calculated occlusion perpendicular distance can be significantly improved.

Moreover, the wax-up molds 310, 310A, 310B for scanning are preferably prepared as a finished product and standardized in a plurality of sizes for mass production so as to be universally applicable to various oral cavities of the operator or impression models corresponding thereto. Therefore, in a state where the wax jaws 310, 310A, 310B for scanning are provided in advance in size on the side of the operator, the operator can use the wax jaws immediately when visiting the wax jaws, and thus the convenience of use can be significantly improved. In addition, the step of acquiring information on the implantation target portion and the alignment target portion before the dental restoration is installed can substantially minimize the number of times of visits by the operator to 1.

When the scanning wax-up jigs 310, 310A, and 310B are corrected to be suitable for the respective operators, a plurality of scanning images, CT images, and moving images can be acquired at once. In this case, since the time points at which the plurality of scan images, the CT images, and the moving images are acquired are substantially the same, the matching degree of each image data can be significantly improved.

On the other hand, the variable anastomotic portions 311, 313, and 315 are preferably provided on the inner surface side of the scanning wax jaws 310, 310A, and 310B, and are formed to have margin portions 311a, 313a, and 315a that exceed the width of the standard gum portion corresponding to the implantation target portion. The masticatory protruding portions 312, 314, and 316 are preferably provided on the outer surface side of the scanning wax jaws 310, 310A, and 310B, are integrally formed with the variable fitting portions 311, 313, and 315, and protrude to correspond to the target fitting portions.

Moreover, referring to fig. 1a to 1b, the chewing protrusion 312 may be formed in an arcuate shape corresponding to a preset standard arch profile da, and may be formed to have an outer surface corresponding to the outer shape of the teeth. That is, the masticatory protruding portion 312 may be formed to include a masticatory surface corresponding to an actual tooth shape and an interdental corresponding portion 312 b.

Here, the interdental corresponding portion 312b may be displayed in intaglio, and may be used as an alignment mark portion serving as an alignment reference when disposed between the implantation target portion and the alignment target portion. In detail, the alignment mark portion may be aligned with either one of the implantation target portion and the alignment target portion in accordance with a preset visible reference index. In this case, the visible reference index may be formed between the teeth of the involutive remaining teeth, and in some cases, the upper labial ligament or the lower labial ligament corresponding to the median line of the human body may be set as the visible reference index.

Accordingly, when the scanning wax pieces 310, 310A, and 310B are corrected, the inner and outer surface portions can be accurately corrected in accordance with the implantation target portion and the alignment target portion. Further, even if the scanning wax jigs 310, 310A, and 310B, whose separation is corrected, are repeatedly provided and separated between the implantation target portion and the alignment target portion, they can be guided to accurate positions with certainty.

Alternatively, as shown in fig. 2, the chewing protrusion 314 may be provided in a shape in which a cross-sectional area corresponding to a preset standard arch contour is simply protruded. In this case, the shape of the scanning wax bite pieces 310, 310A, and 310B is simplified, and thus the manufacturing is easy, and the productivity can be improved and the manufacturing cost can be reduced. In this case, the predetermined outer surface of the masticatory protruding portion 314 and the variable anastomosis portion 313 integrally formed therewith may further include the alignment mark portion 314 b. When the scanning wax-up jigs 310, 310A, and 310B are mass-produced, the alignment mark portions 314B can be produced in a state where they are displayed, and in some cases, the alignment mark portions 314B can be displayed by an operator using a tool at a step of correcting the scanning wax-up jigs 310, 310A, and 310B.

In addition, as shown in fig. 3a to 3b, in the chewing protrusion 316, the boundary region between the incisor part and the molar part is recessed toward the variable fitting part 315, so that the incisor part and the molar part can be divided from each other. In this case, the outer surface 316a of the incisor-side masticatory protruding portion may be formed to have an outer surface corresponding to the outer shape of the teeth. That is, the masticatory protruding portion 316 can be formed to include a masticatory surface corresponding to an actual tooth shape and an interdental corresponding portion 316 b.

The outer surface 316c of the molar side chewing protrusion and the outer surface 316a of the incisor side chewing protrusion may be divided from each other to protrude with a cross-sectional area corresponding to a preset standard arch contour. Here, the frictional mark k including at least one of a scratch or an intaglio which improves an adhesive force with the filled curable resin when being re-lined at a distance corresponding to a perpendicular distance to the occlusion of the operator can be formed on the occlusal surface of the masticatory protruding portion 316. In this case, the friction mark k is preferably formed of at least one of a plurality of scratches and a plurality of intaglio marks to increase the surface area of the masticatory protruding part 316.

Here, it is also possible to fill and bite another dental resin for bite vertical distance alignment between the chewing protrusion 316 and the alignment target portion to perform relining (relining). Such a dental resin can be provided in alginate, putty, or a curable resin, which are generally used in preparing an impression in dentistry.

Accordingly, the surface area to be bonded when the curable resin filled on the occlusal surface of the chewing protrusion 316 is filled is increased according to the perpendicular occlusion distance between the chewing protrusion 316 having the friction mark k formed on the occlusal surface thereof by a scratch, an intaglio, or the like and the subject. Accordingly, since the adhesive force between the masticatory protruding portion 316 and the curable resin is improved, a scanned image in which an accurate vertical occlusion distance is calculated can be obtained.

In addition, the masticatory projections 316 may form recesses in which boundary regions between the incisor portions and the molar portions are recessed toward the variable fitting portions 315. Here, the above-mentioned dented portion is preferably understood to be formed by denting an area corresponding to canine or molar teeth of teeth. Thereby, incisor portions formed similarly to actual teeth and molar portions formed in such a manner as to increase surface area at the time of relining are divided from each other with the above-described concave portions as references, so that accuracy can be improved at the time of acquiring the bite vertical distance and the moving image.

Specifically, the motion image c30 is acquired by performing a motion scan of a three-dimensional motion trajectory of the jaw joint moved by the dynamic scanner in a state where the outer surface of the oral cavity is exposed and in a state where the masticatory protruding portion 316 and the alignment target portion 3 are engaged with each other. At this time, the three-dimensional movement locus is shown as a locus of a gothic arch shape as the jaw joint moves in a three-dimensional space including the left-right direction, the front-back direction, and the up-down direction with reference to the interdental corresponding portion 316 b. Here, the motion image c30 can be acquired by performing a motion scan with reference to a reference point such as a vertex of the interdental corresponding portion 316B of the wax bite 310B for scanning placed on the lower jaw. Alternatively, in some cases, when the upper jaw is the implantation target portion and the lower jaw is the alignment target portion, the motion scan can be performed with reference to the inter-tooth vertex of the remaining teeth on the incisor side of the alignment target portion.

Thus, the above-mentioned moving image c30 digitized for the three-dimensional movement trajectory of the jaw joint moved by the above-mentioned dynamic scanner is quickly acquired in a state where the outer surface of the oral cavity is exposed, unlike the past in which only the two-dimensional gothic arch is acquired by installing another trace board in the oral cavity. Therefore, it is possible to significantly shorten the working time and significantly improve the convenience of the operation, and to significantly improve the reliability of the dental restoration design information thus acquired. In addition, the chewing surface of the finally manufactured artificial crown can be accurately designed in accordance with the jaw joint movement of each operator. That is, since the moving image c30 acquired by the dynamic scanner includes a gothic arch image of a three-dimensional movement locus of the jaw joint, it is possible to acquire an accurate gothic arch image, unlike an existing gothic arch scanner.

At this time, when the wax bite model for scanning 310B is subjected to the motion scanning, the motion trajectory of the jaw joint which moves cannot be recognized by the dynamic scanner due to the same color and smooth surface structure. That is, when the dynamic scanner scans the bullet of the jaw joint, the dynamic image in which the motion change of the surface is reduced by the recognition of the wax bite for scanning is scanned and converted into a three-dimensional modeling file. At this time, during the conversion of the image, the recognition rate of the above-described dynamic scanner is reduced due to the smooth recognition reducing surface. To solve this problem, the motion recognition enhancing portion 317 can be provided/formed on the recognition lowering surface of the scanning wax bite 310B.

In detail, as shown in fig. 3a to 7, the wax bite model for scanning 310B may further include the motion recognition enhancing unit 317 disposed on the recognition lowering surface to provide a visible reference index when acquiring the gothic arch moving image c30 of the three-dimensional motion trajectory of the jaw joint (j of fig. 8) of the operator. At this time, the identification lowering surface is a smooth surface portion of the front surface portion of the scanning wax bite 310B.

Here, the motion recognition enhancing unit 317 according to an embodiment of the present invention may include a plurality of registration markers 317B attached along an outer surface of the scanning wax bite 310B. In this case, the registration marker is preferably provided and formed of a radiopaque material, and a plurality of registration markers are preferably provided and formed at least 3 points apart along the outer surface of the scanning wax bite 310B. Such a registration marker may be provided as a solid having a predetermined volume and attached to the implantation target portion, or may be attached to an outer surface of the implantation target portion in a predetermined size by injecting and curing a dental resin having a radiopaque density.

The pitch g2 between the registration markers 317b can be set to a pitch smaller than the maximum movement radius g1 of the jaw joint that moves in the left-right direction, the front-back direction, and the up-down direction. Here, in the case where the distance g2 between the registration markers 317B exceeds the maximum movement radius g1 of the jaw joint, when the jaw joint is subjected to the movement scanning by the dynamic scanner, the movement locus may not be recognized due to the same color and smooth surface structure of the wax bite block 310B for scanning or the implantation target portion.

Accordingly, the distance g2 between the registration markers 317b is arranged at a distance smaller than the maximum movement radius g1 of the jaw joint, so that an accurate moving image is acquired when the dynamic scanner performs a motion scan, and thus the precision of the finally manufactured artificial dental crown can be significantly improved.

On the other hand, referring to fig. 4, the motion recognition enhancing unit may be provided by a powder aerosol that is applied to the surface of the scanning wax bite to form a discontinuous uneven surface 317 c.

Here, the powder spray may be applied to the surface of the wax bite for scanning instead of the registration mark, so that the surface of the wax bite may be formed as a discontinuous uneven surface 317 c. Accordingly, when the jaw joint is subjected to the movement scanning by the dynamic scanner, the discontinuous concave-convex surfaces 317c on the surface of the wax bite can provide reference points for the movement.

Further, referring to fig. 5, the motion recognition enhancing portion may be displayed by a plurality of intaglio portions 317d along the surface of the scanning wax bite with a predetermined pitch. Further, referring to fig. 6, the motion recognition enhancing unit may be displayed by a water-insoluble ink 317e which is layered in a plurality of patterns on the surface of the scanning wax bite.

In this case, when the motion recognition enhancing units are provided in a manner that the registration markers, the intaglio, and the pattern of the water-insoluble ink are layered, the pitch between the motion recognition enhancing units can be arranged at a pitch smaller than the maximum movement radius of the jaw joint moving in the left-right direction, the front-back direction, and the up-down direction.

Thus, the movement of the movement recognition enhancing unit 317 according to the movement of the jaw joint is imaged and displayed on the moving image. The planning unit can acquire data on a three-dimensional movement locus of the jaw joint with reference to the three-dimensional surface information/data of the movement recognition enhancing unit 317. This can significantly improve the accuracy of the moving image.

The motion recognition enhancing unit is provided on a smooth surface of the scanning wax bite formed integrally of a paraffin material to enhance motion recognition. This can significantly enhance the recognition degree of the three-dimensional motion trajectory when the motion scan is performed by the dynamic scanner.

Moreover, the recognition lowering surface of the wax bite for scanning is reinforced by the motion recognition enhancing portion, so that a moving image of a three-dimensional motion locus of the jaw joint corresponding to the gothic arch shape is accurately acquired as three-dimensional stereoscopic data. Therefore, the accuracy of the finally manufactured dental restoration can be significantly improved based on the moving image.

On the other hand, referring to fig. 1a to 3b, the margin portions 311a, 313a, and 315a are preferably formed to exceed the width of the standard gum portion. Here, the standard gum portion width is preferably defined as a standardized lateral distance between the outer side and the inner side of the gum portion calculated in consideration of anatomical variation of each age and sex. It is best understood to be a standardized lateral spacing between the labial and lingual sides of the gums calculated in view of age and gender anatomical deviations. Moreover, the width of the standard gum portion is preferably understood to be a width set to substantially correspond to or more than the standard arch contour da.

Accordingly, the margin portions 311a, 313a, and 315a may be formed to have an area laterally expanded from the width of the standard gum portion. Thus, the wax pieces 310, 310A, 310B for scanning can be arranged so as to entirely surround the inner and outer sides of the gum portion of the implantation target portion. In addition, the inner surfaces 311b, 313b, 315b of the variable anastomotic portions 311, 313, 315 may be concavely formed with a curvature smaller than the contour of the bulged outer surface of the gingival part on the average implantation target portion side. Therefore, the entire outer surface of the implantation target portion is in contact with the variable anastomosis portion 311, and a sufficient margin volume for performing anastomosis correction can be secured.

On the other hand, in the present invention, the inner surface portions 311B, 313B, and 315B of the scanning wax jaws 310, 310A, and 310B are substantially the same as the inner surface portions 311B, 313B, and 315B of the variable matching portions 311, 313, and 315, and therefore, it is preferable to understand that the same reference numerals are used for description and illustration. Since the outer surface portions 312a, 314a, 316a of the scanning wax jaws 310, 310A, 310B are substantially the same as the outer surface portions 312a, 314a, 316a of the masticating protrusion portions 312, 314, 316, it is best understood that the same reference numerals are used for description and illustration.

In the wax jaws 310, 310A, 310B for scanning, the thickness between the inner surfaces 311B, 313B, 315B of the variable anastomotic portions 311, 313, 315 and the outer surfaces 312a, 314a, 316a of the chewing protrusions 312, 314, 316 is preferably formed to be larger than the average vertical occlusal distance calculated in consideration of anatomical variation in each age group and sex. Therefore, a sufficient margin thickness can be secured by a pressure of simple biting in a state where the wax bite pieces 310, 310A, 310B for scanning, the inner and outer surface portions of which are softened by heat treatment, are disposed between the implantation target portion and the alignment target portion.

Moreover, a reinforcing surface portion (not shown) may be further formed to support the variable engagement portions 311, 313, 315 formed in an arcuate shape and the both end portions of the masticatory protruding portions 312, 314, 316. Accordingly, even when the engagement pressure is applied in a state where the inner and outer surface portions of the scanning wax bite pieces 310, 310A, and 310B are softened and the support strength is lowered, twisting or breaking can be prevented. In addition, since the reinforced face portion (not shown) is bite-corrected in a state of being supported by the hard palate when corresponding to the maxillary side, it is also possible to prevent the scanning wax jigs 310, 310A, 310B from being displaced by sliding at the time of bite. Therefore, the corrected wax bite pieces 310, 310A, 310B for scanning can be accurately corrected to accurately guide the bite vertical distance.

On the other hand, the scanning wax jigs 310, 310A, and 310B are prepared (s410), the scanning wax jigs 310, 310A, and 310B are heated and softened, and the mastication protrusion portions 312, 314, and 316 and the alignment target portion 3 are engaged with each other (s 420).

Specifically, standardized and universal products are prepared as the wax jaws 310, 310A, 310B for scanning, and products having a size suitable for the operator are selected and used. The scanning wax jaws 310, 310A, 310B are disposed between the implantation target portion 2 and the alignment target portion 3, and the variable anastomotic portions 311, 313, 315 corresponding to the implantation target portion 2 are softened when heat treatment is performed at a temperature equal to or higher than a predetermined temperature. The masticatory projections 312, 314, and 316 facing and corresponding to the alignment target portion 3 are softened when heat-treated at a temperature equal to or higher than a predetermined temperature.

Before or after the acquisition of each image data, the inner and outer surface portions of the scanning wax jigs 310, 310A, 310B are disposed between the implantation target portion 2 and the alignment target portion 3 in a softened state. At this time, the inner and outer surface portions of the scanning wax pieces 310, 310A, 310B are heat-treated and softened to have a strength weaker than the implantation target portion 2 and the alignment target portion 3. Therefore, the inner surface contours of the variable anastomotic portions 311, 313, and 315 and the outer surface contours of the masticatory protruding portions 312 are deformed by the occlusion pressure in accordance with the outer surface contours of the implantation target portion 2 and the apposition target portion 3, respectively. At the same time, the thickness between the variable engagement portions 311, 313, 315 and the masticatory protruding portions 312, 314, 316 is deformed in accordance with the occlusion vertical distance VD.

In detail, the inner surface of the variable anastomotic portion 311 is recessed by the occlusion pressure so as to be depressed to correspond to the outer surface of the implantation target portion 2 which is bulged. Accordingly, the engraved groove corresponding to the implantation target portion 2 is formed in the variable anastomosis portion 311, and can be corrected to an anastomosis correction portion. The outer surface of the chewing protrusion 312 is formed with the chewing mark by the occlusion pressure so as to correspond to the end of the target alignment part 3, for example, so as to match the end contour of the aligned teeth, and can be corrected to be an occlusion correction part. Further, the pitch between the coincidence correcting portion and the occlusion correcting portion can be corrected so as to substantially correspond to the occlusion vertical distance VD.

Each image data acquired in a state where the scanning wax bites 310, 310A, and 310B formed and resolidified by the coincidence correcting portion and the bite correcting portion is set includes the bite vertical distance VD information. In this way, since the scanning wax jaws 310, 310A, 310B are standardized to a fixed form and mass-produced, it is possible to easily correct the surface contour suitable for each operator while reducing the production cost and the production time to be economical. Therefore, the accuracy and precision of the occlusion vertical distance VD calculated and acquired by using the corrected scanning wax patterns 310, 310A, and 310B and the image data can be significantly improved.

Such a wax bite 310, 310A, 310B for scanning is preferably formed of paraffin. The paraffin wax is solid at room temperature, has a predetermined support strength, and is easily cut and corrected by a tool such as a cutter. Therefore, when the natural/restored teeth remain in the implantation target portion 2 or the length of the scanning wax pieces 310, 310A, and 310B is long, the dental implant can be used by cutting or dividing. In addition, when the interdental corresponding portion 312b or the alignment mark portion 314b is formed in the masticating protrusions 312, 314, 316, cutting or division can be performed based on the interdental corresponding portion 312b or the alignment mark portion 314b, and thus, the convenience in use can be further improved.

The paraffin wax has a melting point of 47 to 64 ℃ and thus has physical properties of softening even without application of high-temperature heat. Therefore, the heat treatment is safe even if it is applied to the oral cavity as it is, and the heat treatment is quickly cured at a temperature lower than the preset temperature, so that the degree of matching between the implantation target portion 2 and the alignment target portion 3 can be maintained. Moreover, since the paraffin has a low shrinkage rate during the softening and curing process, the accuracy of the fit between the implantation target portion and the alignment target portion and the calculated occlusion perpendicular distance can be remarkably improved.

Here, the paraffin wax preferably includes paraffin wax (e.g., ceresin) in an amount of 70 to 85 wt% and other additives in the remaining wt% with respect to the total wt%. For example, the paraffin wax may include 77 to 85 wt% of ozokerite, 7 to 13 wt% of beeswax, 1.5 to 3 wt% of carnauba wax, 2 to 4 wt% of resin, and 1.5 to 3 wt% of microcrystalline wax.

On the other hand, the inner surface and the outer surface of the wax bite pieces 310, 310A, 310B for scanning are preferably heat-treated at 40 to 55 ℃. The wax jaws 310, 310A, 310B for scanning, which are softened by heat treatment on the inner and outer surface portions, respectively, are disposed between the implantation target portion 2 and the alignment target portion 3, and apply an occlusion pressure corresponding to a preset occlusion vertical distance VD. Thus, the inner surface portions of the scanning wax jaws 310, 310A, 310B are pressed and corrected to correspond to the outer surface contour of the implantation target portion 2, and are integrated with the alignment correcting portion. The outer surface portions of the scanning wax jaws 310, 310A, 310B are corrected so as to correspond to the target alignment portion 3, and are integrated with the engagement correcting portion. In this case, the pitch between the engagement correcting portion and the occlusion correcting portion may be formed to correspond to the occlusion vertical distance VD.

Here, if the inner surface portion and the outer surface portion of the scanning wax jigs 310, 310A, and 310B are heat-treated at a temperature of less than 40 ℃, they cannot be softened to have a strength smaller than that of the implantation target portion 2 and the alignment target portion 3. Accordingly, even if the biting pressure is applied, the inner and outer surface portions of the scanning wax bites 310, 310A, 310B are difficult to be corrected so as to correspond to the outer surface contours of the implantation target portion 2 and the alignment target portion 3. On the other hand, if heat treatment is performed at a temperature exceeding 55 ℃, the phase is excessively changed to a liquid phase. Accordingly, the fluidity of the inner and outer surface portions of the scanning wax jigs 310, 310A, 310B is excessively increased, and it is difficult to correct the shapes to be clear corresponding to the implantation target portion 2 and the alignment target portion 3. Further, when the scanning wax jaws 310, 310A, and 310B are directly set in the oral cavity, there is a risk of scalding or the like due to high temperature.

Therefore, the inner surface portion and the outer surface portion of the wax bite pieces 310, 310A, 310B for scanning are preferably heat-treated in the range of 40 to 55 ℃ so as to have a strength weaker than that of the implantation target portion and the alignment target portion and soften to such an extent that the corrected form can be practically maintained.

Further, the wax bite pieces 310, 310A, 310B for scanning are preferably heat-treated only on the inner surface portion and the outer surface portion corresponding to the implantation target portion 2 and the alignment target portion 3. Accordingly, the entire shape of the wax jaws 310, 310A, 310B for scanning can be maintained, and the inner surface portion and the outer surface portion can be easily aligned to be engaged with the implantation target portion 2 and the alignment target portion 3, respectively.

In this case, the wax jaws 310, 310A, 310B for scanning may be placed in a container containing hot water of 45 to 55 ℃ and heat-treated. Alternatively, the present invention can be applied to any heating device that discharges hot air and can heat and soften the inner and outer surface portions of the scanning wax jaws 310, 310A, 310B.

Further, the anastomosis correction portion can be formed more precisely by filling and occluding another dental resin between the anastomosis correction portion and the implantation target portion 2 to perform relining (relining). That is, the dental resin fills and cures gaps or pores with the implantation target portion 2, which may occur as the paraffin is cured, and thus the matching degree between the matching correction portion and the implantation target portion 2 can be further improved. Such a dental resin can be provided with alginate, putty, or a curable resin, which are generally used in preparing an impression in dentistry, and can be provided with a viscosity to such an extent that the soft tissue of the gum portion g of the implantation target portion 2 is not excessively deformed by pressure.

On the other hand, the scanning wax jaws 310, 310A, 310B are preferably formed in an integral manner so as to have substantially one body between the inner surface portion corresponding to the implantation target portion 2 and the outer surface portion corresponding to the alignment target portion 3. Therefore, the conventional problem that the laminated portion slides and laterally twists or displaces during occlusion due to the lamination of wax or curable resin having a different material from that of the inner and outer surfaces of the occlusion inspection unit such as a tray or a splint can be completely solved. That is, since the biting pressure can be actually applied in the vertical direction of the scanning wax bite 310, 310A, 310B, the precision of the calculated biting vertical distance VD can be remarkably improved. In this way, the implantation target portion 2 and the alignment target portion 3 can be arranged in an occlusion manner so as to correspond to the occlusion vertical distance VD optimized for the operator, based on the corrected wax jaws 310, 310A, 310B for scanning.

Here, when the scanning wax jaws 310, 310A, and 310B are set directly in the oral cavity and calibrated, the occlusion vertical distance VD can be determined by expression of the intention of the operator in direct chewing feeling, and the electrical/chemical signals around the jaw joint and the jaw muscle can be measured and determined. That is, in a state where the scanning wax jigs 310, 310A, and 310B are inserted into the oral cavity, the lower jaw is actually occluded by the operator, and thereby the scanning wax jigs 310, 310A, and 310B can be corrected to correspond to the occlusion vertical distance VD.

Alternatively, in the case where the implantation target portion and the alignment target portion are provided as impression models, the wax bites 310, 310A, and 310B for scanning may be disposed between the impression models connected to the upper and lower jaw sides by a bite. The impression model can be arranged by occlusion using the articulator, and an occlusion pressure can be applied so as to correspond to the calculated occlusion vertical distance VD. Accordingly, the inner surface portions and the outer surface portions of the scanning wax jigs 310, 310A, and 310B can be corrected to the fitting correction portions and the engagement correction portions.

Thus, the present invention utilizes the wax jaws 310, 310A, 310B for scanning provided as a finished product, thereby not only saving costs, but also individually correcting the surface profiles of the inner and outer surface portions and the intervals thereof according to the occlusion vertical distance VD of each operator. Therefore, the occlusion vertical distance VD optimized for each operator can be accurately calculated, whereby the overall accuracy and precision of tooth restoration can be remarkably improved.

In this case, the scanning wax casts 310, 310A, 310B may be disposed between the implantation target portion 2 and the alignment target portion 3 before the acquisition of the respective image data, and may be corrected by the bite pressure. Alternatively, it is also possible to acquire image data on the implantation target portion 2 and the alignment target portion 3 before the scanning wax jigs 310, 310A, and 310B are set, and further acquire image data on the implantation target portion 2 and the alignment target portion 3 after the scanning wax jigs 310, 310A, and 310B are set.

On the other hand, the motions in the lateral direction, the front-back direction, and the up-down direction of the jaw joint of the operator are recognized by the motion recognition enhancing unit 317 and are subjected to motion scanning by the dynamic scanner, and thereby a gothic arch motion image c30 of the three-dimensional motion trajectory of the jaw joint is acquired (s 430). At this time, the three-dimensional movement locus of the jaw joint of the operator is subjected to the motion scan in a state where the chew projections 312, 314, 316 provided in the scanning wax jaws 310, 310A, 310B and the alignment target portion 3 are engaged with each other, and the moving image c30 is acquired.

In detail, referring to fig. 6, the motion image c30 is acquired with respect to the three-dimensional motion trajectory of the jaw joint by the dynamic scanner in a state where the outer surface of the oral cavity is exposed and the masticatory protruding portion 316 and the alignment target portion 3 are engaged with each other. That is, the three-dimensional motion trajectory of the bullet with respect to the jaw joint (j in fig. 8) moving in the left-right direction, the front-back direction, and the up-down direction within the maximum movement radius g1 is obtained by the motion scan by the dynamic scanner. Here, the dynamic scanner is a scanner provided to acquire a movement of a three-dimensional movement locus with respect to the jaw joint with reference to a vertex or the like of the interdental corresponding portion 316B of the scanning wax bite 310B when the jaw joint flicks. At this time, the lips can be fixed in an open state by another traction device (not shown) so that the outer surface of the oral cavity including the wax bite 310B for scanning and the implantation target portion 2 is exposed.

Next, in a state where the outer surface of the oral cavity is exposed, the dynamic scanner can perform the motion scanning of the jaw joint by flicking in the lateral direction, the front-back direction, and the up-down direction with reference to the vertex of the interdental corresponding portion 316 b. In this case, the motion scan is preferably understood as a concept of acquiring a trajectory moving from a reference point with reference to a specific reference point when a bullet occurs, and is different from a scan of acquiring still image data.

Thus, the above-described moving image c30 of the three-dimensional movement trajectory of the jaw joint moved by the dynamic scanner is digitized and rapidly acquired, unlike the past in which a gothic arch is acquired by installing another trace board in the oral cavity. This can significantly shorten the working time and significantly improve the convenience of the operation.

Further, the motion image c30 can be acquired by the dynamic scanner in a state where the scanning wax bite 310B is softened by heat treatment at a temperature not lower than a predetermined temperature. Specifically, the motion picture c30 can be acquired in a state where the masticatory protruding portion 316 and the alignment target portion 3, which are softened by heat treatment at a temperature equal to or higher than a predetermined temperature, are engaged with each other. Thus, when the motion image c30 of the three-dimensional motion trajectory with respect to the jaw joint is acquired in a state where the wax bite for scanning is heat-treated and softened at a temperature equal to or higher than the preset temperature, the space between the target portion 3 and the occlusal surface of the masticatory protruding portion 316 is lubricated and the flow is smooth. Therefore, the accuracy of the moving image c30 acquired by the dynamic scanner can be significantly improved, and the masticatory protruding portion 316 can be corrected to be an occlusion correction portion corresponding to the three-dimensional movement locus of the jaw joint.

Therefore, when the moving image c30 of the three-dimensional movement locus with respect to the jaw joint is acquired in a state where the scanning wax bite 310B is heat-treated and softened at a temperature equal to or higher than the preset temperature, the click portion between the occlusal surface of the masticatory protruding portion 316 and the target apposition portion 3 flows. This can significantly improve the accuracy of the moving image c30 acquired by the dynamic scanner.

On the other hand, a plurality of scan images of the implantation target portion and the alignment target portion are acquired by an oral scanner. Then, a CT image of the oral cavity occluded by the wax bite for scanning is acquired by a computed tomography apparatus.

In this case, the plurality of scan images preferably include scan images acquired from the implantation target portion and the alignment target portion before the scan wax bite is set. It is preferable that the method further includes acquiring a scan image of the implantation target portion and the alignment target portion after the corrected scan wax bite is set.

In detail, it is preferable that the plurality of scan images include a first scan image of the entire outer surface of the scanning wax bite corrected so that the coincidence correcting portion and the occlusion correcting portion are integrated. Preferably, the alignment target portion includes a second scan image of an outer surface of the alignment target portion. Preferably, the third scan image of the outer surfaces of the implantation target portion and the alignment target portion which are occluded by the corrected wax bite is included.

Here, the three-dimensional surface information of the entire outer surface of the wax bite model for scanning including the three-dimensional surface information m311r of the fitting correction portion and the three-dimensional surface information of the bite correction portion is displayed as an image on the first scanned image.

Then, the three-dimensional surface information of the outer surface of the alignment target portion is displayed as an image in the second scan image m 12. At this time, when the aligned tooth remains in the alignment target portion, the three-dimensional surface information t12 of the aligned tooth is displayed as an image in the second scan image m 12. Alternatively, when the target alignment portion side is a non-dental jaw, the three-dimensional surface information of the gingival part on the target alignment portion side may be displayed as an image in the second scan image m 12. In the step of generating the three-dimensional planning image, it is possible to virtually arrange the normalized dentition data stored on the alignment target section side of the planning section in an imaged form.

Further, the three-dimensional surface information of the outer surface in a state where the gum portion of the implantation target portion is occluded on the inner surface side of the scanning wax bite and a part of the end portion of the alignment target portion is occluded on the outer surface side is displayed as an image in the third scan image. At this time, the third scan image is acquired in a state where the implantation target portion and the alignment target portion are occluded by the scan wax bite. Therefore, the three-dimensional surface information corresponding to the scanning wax bite and the lip-side outer surface and a part of the outer surface on the cheek side of the alignment target portion is displayed as an image on the third scan image.

Here, the oral cavity scanner may directly scan the oral cavity of the subject before and after the wax bite for scanning is set, and thereby a plurality of the scan images may be acquired. In this case, a traction device that pulls soft tissue such as lips and buccal mucosa away from the outside of the gum portion can be used. Of course, it is also possible to scan the impression model before and after the above-described wax bite for scanning to acquire a plurality of the above-described scan images as the case may be.

On the other hand, it is preferable that the CT image m16 is acquired by directly taking an image of the oral cavity with a computed tomography apparatus in a state where the wax bite for scanning is set and occluded. Thereby, the three-dimensional alveolar bone data on the implantation target side, the three-dimensional occlusal tooth data on the apposition target side, and the like, excluding soft tissues such as lips, a buccal mucosa, and a gum, which are low in density and allow transmission of radiation, are imaged and displayed in the CT image m 16.

Moreover, the wax-bite for scanning is preferably formed of a predetermined color to be clearly displayed on the moving image and the plurality of scanning images. In addition, the wax bite for scanning is preferably less than 2.0g/cm³Is formed so as to be transmitted without being displayed when the above CT image m16 is acquired. Therefore, the CT image m16 acquired in the state where the wax bite model for scanning is set and occluded clearly shows the alveolar bone on the implantation target portion side, the apposition teeth/alveolar bone on the apposition target portion side, and the like in consideration of the occlusion perpendicular distance. This can significantly improve the accuracy and precision of each image data acquired by the imaging device.

The plurality of scan images and the CT image m16 thus acquired are transmitted to the planning unit. Furthermore, information that can be assembled into a dental restoration plan that can be made through the dental restoration described above can be assembled through subsequent image alignment and registration processes.

On the other hand, the plurality of scan images are aligned by the planning unit so as to correspond to the occlusion vertical distance, and the integrated scan image is generated. The integrated scan image is superimposed and registered on the CT image with reference to a common portion thereof, thereby generating a three-dimensional planning image.

Here, the integrated scanned image m17 is preferably generated by the following steps. Specifically, the first scanned image and the second scanned image m12 are aligned in an overlapping manner with respect to a common portion of the third scanned image. At this time, the common portion of each scanned image is preferably set to a specific portion which is tissue-strong so that fluidity due to an external force is minimized and has a boundary clearly distinguished from the surroundings.

For example, in the first scanned image and the third scanned image, specific portions of the three-dimensional surface information v11 and v13 of the scanning wax bite, which are displayed in the same manner in the respective images, can be selected as common portions and set as the overlap reference points. In the second scan image m12 and the third scan image, specific portions of the three-dimensional surface information t12 and t13 of the tooth that are displayed in the same manner in the respective images can be selected as common portions and set as the superimposition reference points.

Such overlapping reference points can be set at a plurality of positions, and thus, the matching degree between the images can be significantly improved in the process of improving the overlapping arrangement between the images. Accordingly, the first scanned image and the second scanned image m12 are aligned based on the third scanned image in a state in which the occlusion perpendicular distance is taken into consideration.

On the other hand, the first scanned image is preferably exchanged so that the three-dimensional surface information m311r of the alignment correction portion recessed inward corresponding to the inner surface portion of the scanning wax bite is exposed outward. Here, the swap (swap) is preferably understood to mean that an already set image is replaced or swapped with another image or an image deformed by image processing.

Accordingly, the three-dimensional surface information m311r of the alignment correction section and the three-dimensional surface information on the outer surface of the alignment target section are aligned in a state in which the occlusion perpendicular distance is taken into consideration, and the integrated scanned image m17 is generated.

Specifically, the first scanned image includes three-dimensional surface information of the entire outer surface of the wax bite model for scanning, which is corrected by the bite pressure with respect to the inner and outer surface portions. Hereinafter, the three-dimensional surface information of the scanning wax bite is preferably understood as being the three-dimensional surface information of the scanning wax bite in a state in which the inner and outer surface portions are corrected.

In this case, the three-dimensional surface information of the scanning wax bite is stored by connecting a plurality of points having preset coordinate values. For example, the three-dimensional surface information of the scanning wax bit may be stored in an STL file (StereoLithography file), and may be formed to have a plurality of points corresponding to the outer surface shape of the scanning wax bit and a triangular surface formed by lines connecting the points. Therefore, the three-dimensional surface information of the wax bite for scanning can be stored in a three-dimensional surface model having a substantially hollow interior.

Here, the three-dimensional surface information of the scanning wax bite model includes three-dimensional surface information of the occlusion correction unit displayed on the outer surface side so as to bulge outward. The three-dimensional surface information of the scanning wax bite model includes three-dimensional surface information m311r of the alignment correction unit, which is displayed so as to be recessed inward on the inner surface side.

At this time, a boundary line x is set along the peripheral side edge of the three-dimensional surface information m311r of the fitting correction portion, and the three-dimensional surface information on the chewing protrusion side is set as a clearance area d. Then, an image is switched (swap) so that the three-dimensional surface information m311r of the alignment correcting portion is exposed to bulge toward the alignment target portion side as the clear area d is cleared. Here, the peripheral edge of the three-dimensional surface information m311r of the fitting correction portion is preferably a line set corresponding to the outermost peripheral edge of the margin portion. In addition, in the present invention, the term "erased" is preferably understood to include deleting a corresponding image or data in the entire image data and transparently performing non-visualization processing.

On the other hand, the three-dimensional surface information of the scanning wax bite is actually stored as surface information having no thickness. Therefore, the three-dimensional surface information m311r of the coincidence correcting portion has substantially the same coordinate values for the inner surface side contour and the outer surface side contour. The three-dimensional surface information m311r of the anastomosis correction portion is actually obtained by performing correction so as to conform to the outer surface contour of the implantation target portion. Therefore, the three-dimensional surface information m311r of the alignment correction portion substantially corresponds to the outer surface contour of the gum portion of the implantation target portion. At this time, m21 shown in fig. 8 is preferably understood to mean the first scanned image exchanged in a state where the three-dimensional surface information m311r of the coincidence correcting portion is exposed to the outside.

Therefore, the first scan image including the three-dimensional surface information of the scan wax bite is exchanged, whereby the three-dimensional surface information of the outer surface contour of the gum portion of the implantation target portion can be easily acquired. Furthermore, three-dimensional surface information corresponding to the implantation target portion is acquired from a scan image of the scan wax bite having high fluidity for soft tissue, that is, gum, even in a softened state, and having firm strength in a solidified state by having fluidity correctable by bite pressure. This can significantly improve the reliability of the image information for designing the dental restoration.

Here, it is preferable that the third scan image is erased in the integrated scan image m17 to clearly display the first scan image m21 exchanged with the second scan image m 12.

On the other hand, the portions of the integrated scanned image m17 and the CT image m16 that are displayed in common are set as registration reference points, and are superimposed and registered. Thereby, the three-dimensional plan image m20 including the three-dimensional surface information m311r of the anastomosis correction unit displayed in the exchanged first scan image m21, the three-dimensional alveolar bone data a16 on the implantation target unit side, the three-dimensional surface information t12 of the apposition teeth, and the three-dimensional data is generated. At this time, the three-dimensional data of the apposition teeth displayed in the CT image m16 can be registered so as to be actually overlapped with the three-dimensional surface information t12 of the apposition teeth displayed in the integrated scan image m 17.

At this time, the plurality of scan images are aligned based on the third scan image obtained by scanning in a state of being engaged with the scanning wax bite, and the CT image m16 is obtained in a state of being engaged with the scanning wax bite. Therefore, the three-dimensional surface information and the three-dimensional data displayed on the CT image m16 and the integrated scan image m17 are actually aligned and registered corresponding to the same occlusion vertical distance VD. Thus, initial planning data minimizing errors can be acquired when registering the integrated scan image m17 and the CT image m 16. Therefore, the registration between the image data is easy to carry out, the registration process is simplified, and the accuracy and precision of the collected information can be obviously improved.

In this way, the height of the dental restoration is set based on the generated three-dimensional planning image m 20. The design information c20 of the dental restoration, in which the shape of the chewing surface is set in consideration of the three-dimensional surface information t12 of the abutment, is virtually arranged in the three-dimensional plan image m 20.

Further, the implantation position and direction h20 of the fixture can be set based on the alveolar bone three-dimensional data a16 on the implantation target portion side of the CT image m 16. In addition, a virtual fixture f20 capable of supporting a masticatory pressure is virtually disposed corresponding to the implantation position and the direction h20, and a fixture corresponding to the virtual fixture f20 as a real object can be prepared or manufactured. Further, an actual abutment between the actual dental restoration and the actual fixture, which is manufactured based on the dental restoration design information c20, can be prepared or created.

On the other hand, the moving image c30 is three-dimensionally digitized and superimposed on and displayed on the virtual chewing surface included in the design information c20 of the dental restoration (s 440). Specifically, the design information c20 of the dental restoration including a virtual chewing surface is generated in consideration of the occlusion vertical distance based on the three-dimensional planning image m 20. The moving image c30 is superimposed on the design information c20 of the dental restoration, and an overlapped occlusion region c31 is displayed on the virtual chewing surface.

Specifically, as shown in fig. 8 to 9, it is preferable that the overlap occlusion region c31 is set and displayed on a virtual chewing surface of a virtual artificial crown included in the design information c20 of the dental restoration and designed to be occluded with the target portion. Here, the design information c20 of the dental restoration, from which the virtual chewing surface has been extracted in consideration of the three-dimensional surface information t12 of the abutment, is virtually arranged in the three-dimensional planning image m 20. The moving image is superimposed on the design information c20 of the dental restoration, and the superimposed occlusion region c31 is displayed.

The design information c20 of the dental restoration virtually placed in the three-dimensional planning image m20 is virtually movable by the planning unit along a three-dimensional motion trajectory including a left-right direction, a front-back direction, and an up-down direction based on the moving image. At this time, when the design information c20 of the dental restoration is virtually moved by the planning section, an area overlapping the three-dimensional surface information t12 of the abutment with respect to the alignment target section can be set and displayed as the overjet area c 31.

Here, the overlapped occlusion region c31 is preferably data of a three-dimensional region in which the design information c20 of the dental restoration overlaps with the alignment target portion when the virtual chewing surface moves along a three-dimensional motion trajectory. The overlapped bite area c31 may be displayed in a color different from the color of the remaining teeth and the oral tissue in the planning section.

Then, design information c20 for correcting the dental restoration for the overlap elimination region c31a of the overlap occlusion region c31 is set. In this case, the setting of the overlap elimination region c31a is preferably understood to include deleting the image or data corresponding to the overlap occlusion region c31 and transparently performing the non-visualization process. The overlap elimination region c31a is a region that is set in a gothic arch shape on the virtual chewing surface in accordance with the three-dimensional motion trajectory.

Then, the corrected design information c20a of the dental restoration is transmitted from the planning unit to the manufacturing apparatus, and the actual dental restoration is manufactured. In this case, the three-dimensional planning image m20 including the corrected design information c20a of the dental restoration may be stored in a 3D printer standard file such as the STL file. Thus, the actual dental restoration can be easily manufactured to accurately correspond to the corrected design information c20a of the dental restoration. Of course, the actual dental restoration can also be manufactured by using a milling machine or a die device.

Therefore, the design information c20 of the dental restoration virtually arranged in the three-dimensional planning image m20 is moved along the three-dimensional movement locus by the planning unit. Next, the three-dimensional region of the virtual chewing surface overlapping the alignment target portion is removed, and the design information c20 of the dental restoration is accurately corrected. This can significantly improve the accuracy of manufacturing the chewing surface of the dental restoration to be finally manufactured. Moreover, the design information c20a of the dental restoration corrected based on the removal of the overlap removal region c31a by the moving image c30 can significantly reduce the processing time of the dental restoration actually manufactured and significantly improve the working convenience.

It is preferable that the virtual chewing surface of the design information c20a of the dental restoration corrected by removing the overlap removal area c31a is set to be a gothic arch-shaped depression corresponding to the three-dimensional movement locus of the jaw joint.

The chewing surface of the dental restoration manufactured based on the corrected design information c20a of the dental restoration is preferably integrally formed in the form of a gothic arch recess. Here, the dental restoration is an actual restoration corresponding to the design information c20a of the dental restoration, and the chewing surface of the dental restoration is an actual chewing surface corresponding to the virtual chewing surface corrected by removing the overlap removal area c31 a.

Accordingly, the virtual chewing surface of the dental restoration design information c20 is set to a gothic arch shape corresponding to the three-dimensional movement locus of the jaw joint and is recessed and removed, and the chewing surface of the dental restoration is manufactured based on the corrected dental restoration design information c20 a. Therefore, the bite feeling of the finally manufactured dental restoration can be significantly improved.

The virtual chewing surface is set to a gothic arch shape corresponding to the three-dimensional movement locus of the jaw joint and is recessed and removed, and a real chewing surface is manufactured based on the corrected design information c20a of the dental restoration. Therefore, additional correction work of the dental restoration required after final manufacture is minimized, so that the convenience of the operation can be remarkably improved.

In this way, the present invention can calculate the perpendicular occlusion distance by a simple method of applying occlusion pressure to the inner and outer surface portions of the scanning wax biting dies 310, 310A, 310B prepared as standardized products of various sizes in a state of being heat-treated. Therefore, not only time and cost required for calculating the occlusion vertical distance can be saved, but also convenience of use can be significantly improved, unlike the past using a splint or an inconvenient-to-operate tracer whose cost/time is increased due to customization. At this time, the wax jaws 310, 310A, 310B for scanning are formed of paraffin, and when they are engaged at a temperature equal to or higher than a predetermined temperature, they can be easily deformed corresponding to the gum portion g, which is a soft tissue, and they can be quickly solidified, and can accurately guide the engagement vertical distance. In addition, the correction of the wax jaws 310, 310A, 310B for scanning and the acquisition of each image data can be performed at the same time when the operator visits the patient at one time, so that the total time and cost for tooth restoration can be significantly saved.

Moreover, the wax jaws 310, 310A, 310B for scanning are formed as a single body with paraffin, so that the biting pressure is uniformly transmitted corresponding to the direction of biting, thereby minimizing twisting or breakage. Accordingly, the coincidence correcting portion and the occlusion correcting portion are accurately and precisely acquired at the inner and outer surface portions of the scanning wax patterns 310, 310A, 310B, and the reliability of the information collected based on the coincidence correcting portion and the occlusion correcting portion can be remarkably improved.

The anastomosis correction portion is lined with a curable resin to correct the anastomosis to have a high degree of anastomosis with the implantation target portion. Thus, accurate information can be acquired from the scan image of the above-described coincidence correcting unit, and the implantation target portion 2 can be replaced with the implantation target portion 2 having a large proportion of the gingival tissue with high fluidity. This can significantly improve the accuracy in designing and manufacturing the dental restoration.

On the other hand, fig. 11a and 11b are a front view and a plan view of a part of a wax bite for scanning according to another embodiment of the present invention, and fig. 12 is a plan view showing a modification of the wax bite for scanning according to another embodiment of the present invention. Also, fig. 13 is a sectional illustration showing a process of correcting a wax bite for scanning according to another embodiment of the present invention. Also, fig. 14 is an illustration diagram showing a process of acquiring an integrated scan image using a wax bite for scanning according to another embodiment of the present invention. Also, fig. 15 is an exemplary view illustrating a process of overlapping a CT image acquired using a wax bite for scanning with an integrated scan image and registering the integrated scan image according to another embodiment of the present invention. At this time, since the basic configuration in another embodiment of the present invention is the same as that in the above-described one embodiment, detailed description of the same configuration is omitted, and the same reference numerals are given to the same configuration.

As shown in fig. 11a to 15, the wax bite block 310G for scanning according to another embodiment of the present invention preferably further includes a reinforcing surface portion 311c integrally connected to the variable fitting portion 315 and the inside of the masticatory protruding portion 316 and formed to support the variable fitting portion 315 and the both end portions of the masticatory protruding portion 316.

In detail, the reinforcing surface 311c may be formed to support the gap between the variable anastomotic portion 315 formed in an arcuate shape and both ends of the masticatory protruding portion 316. Accordingly, even if the engagement pressure is applied in a state where the inner and outer surface portions of the scanning wax bite 310G are softened and the support strength is lowered, twisting or breaking can be prevented.

Here, the above-described wax bite model for scanning 310G can be set to be bent in a standardized shape so as to accommodate the tongue and manufactured universally when applied to the lower jaw, and can be manufactured universally corresponding to a standardized shape of the hard palate when applied to the upper jaw. In addition, since occlusion correction is performed in a state where the reinforced face portion 311c is supported on the hard palate when corresponding to the maxillary side, it is possible to prevent the scanning wax bite 310G from being displaced by sliding at the time of occlusion. Therefore, the corrected wax bite 310G for scanning can be accurately corrected in such a manner as to accurately guide the bite vertical distance.

On the other hand, referring to fig. 11a to 12, it is preferable that a plurality of filling holes 318 are formed in the recognition lowering surface of the scanning wax bite so as to fill and cure the curable resin. At this time, the identification lowering surface is a smooth portion including the surface of the front surface portion in the scanning wax bite 310F or 310G. Here, there is a risk that the image data acquisition rate for the scanning wax bite is lowered when oral cavity scanning and motion scanning are performed due to the recognition lowering surface.

In detail, a plurality of the filling holes 318 are preferably formed through the variable anastomotic portion 315 and the reinforced facial portion 311c to provide a registration reference point when registering each image data acquired by the oral scan. Therefore, the curable resin fills the filling holes 318 formed in the recognition lowering surfaces of the scanning wax-in jigs 310F and 310G, thereby providing image data for the registration reference points when the scanning image and the CT image are acquired. Meanwhile, the motion recognition rate is enhanced in acquiring a gothic arch moving image that flicks the jaw joint. Thereby, the subsequent correction work of the chewing surface of the artificial crown designed and manufactured based on the moving image is minimized, and thus the convenience of the operation can be remarkably improved.

Here, the filling holes 318 are preferably formed at a plurality of positions in the front-rear direction and the up-down direction of the variable fitting portion 315 and the reinforcing surface portion 311c, respectively, with a predetermined pitch. One filling hole 318 of the filling holes 318 formed through the front surface side of the variable anastomotic portion 315 may be formed in a front center portion of the oral cavity corresponding to the interdental portion 316b, the upper labial ligament or the lower labial ligament. Further, a plurality of filling holes 318 can be arranged at a predetermined pitch in both side directions from the filling hole 318 formed in the center portion of the front surface of the oral cavity.

In addition, in some cases, the distance between the filling holes 318 formed on the front surface side of the variable anastomotic portion 315 in the recognition reduction surface may be smaller than the maximum moving radius of the jaw joint. Here, in the case where the distance between the filling holes 318 exceeds the maximum moving radius of the jaw joint, there is a risk that the movement locus cannot be recognized due to the same color and smooth surface structure of the wax bite 310F for scanning when the jaw joint bullet is subjected to the movement scanning by the dynamic scanner. That is, when the dynamic scanner scans the bullet of the jaw joint, a dynamic image in which the motion change of the recognition reduction surface of the wax bite for scanning is scanned is converted into a three-dimensional modeling file. At this time, the recognition rate of the above-described dynamic scanner is lowered due to the smooth recognition lowering surface during the conversion of the image. Therefore, the distance between the filling holes 318 formed in the recognition reduction surface is arranged at a distance smaller than the maximum movement radius of the jaw joint, so that the motion recognition rate of the dynamic scanner is enhanced, and an accurate moving image can be acquired.

On the other hand, the curable resin is preferably filled in the filling hole 318 and the occlusal surface of the masticatory protruding portion 316, respectively, and cured to provide a reference point for registration and to be replaced in accordance with the occlusal vertical distance VD. That is, the curable resin can be used for the purpose of providing a registration reference point and for the purpose of calculating the occlusion vertical distance VD.

Specifically, referring to fig. 13, the curable resin rb may be provided in a color different from that of the scanning wax bite 310F. For example, when the scanning wax bite 310F is provided in a color similar to that of the gum of the subject, the curable resin may be provided in a blue color series or the like.

Accordingly, when the scan image is acquired by the oral scanner in a state where the wax bite model for scanning 310F is disposed between the implantation target portion 2 and the alignment target portion 3, the registration reference points can be displayed in different colors. In this case, the scan image is three-dimensional surface information on the outer surfaces of the implantation target portion 2, the alignment target portion 3, and the scanning wax bite 310F, which is acquired by an oral scanner.

Thus, the registration reference point is displayed by the curable resin rb injected into the filling hole 318, and the plurality of scan images described below are registered in correspondence with the occlusion vertical distance VD, whereby the integrated scan image with high reliability can be generated.

The curable resin rb is preferably cured in a state of being filled in each filling hole 318 formed in the recognition reduction surface. At this time, the curable resin rb filled in the filling hole 318 preferably contains a radiopaque material to be imaged to provide a registration reference point when a CT image is acquired.

Here, the curable resin rb including a radiopaque material may be separately injected into each of the filling holes 318 formed through the variable anastomotic portion 315 and the reinforcing surface portion 311c by a separate curable resin filling device. In this case, the curable resin rb containing a radiopaque material may be provided by a product such as blu house of park corporation, but is not limited thereto.

Then, a CT image is acquired with the scanning wax bite 310F in a state in which the curable resin rb containing a radiopaque material is cured in a state of being filled in each of the filling holes 318 being disposed between the implantation target portion 2 and the alignment target portion 3. In this case, the CT image is internal tissue information such as the shape and density of alveolar bone of the upper and lower jaws obtained by the computer tomography. At this time, the entire region in which the curable resin rb is cured in a filled state is displayed on the CT image by including a radiopaque material in the curable resin rb. Therefore, a region filled and cured with the curable resin rb containing the radiopaque material is imaged and displayed on a CT image, thereby providing a registration reference point.

Thereby, the registration reference points are exposed by the curable resin rb of the radiopaque material injected into the filling holes 318 penetrating at a plurality of positions on the recognition lowering surface and displayed on the scan image and the CT image. That is, the integrated scan image and the CT image registered by the plurality of scan images described below can be easily registered by aligning the registration reference points. Thereby, the reliability of the three-dimensional planning image generated by registering the CT image and the integrated scan image is significantly improved, and the accuracy of the finally manufactured dental restoration can be significantly improved.

Referring to fig. 13, the curable resin ra can be filled and cured on the outer surface 316c of the chewing protrusion on the molar teeth side so as to be redressed in accordance with the occlusion vertical distance VD of the operator.

Here, the masticatory protruding portion 316 may be formed to protrude in a cross-sectional area corresponding to a preset standard arch contour, and the curable resin ra may be formed as a corrective protruding portion cured in a state of being filled in an occlusal surface of the masticatory protruding portion 316. In this case, the calibration protrusion is finally calibrated after the curable resin ra is cured in a state of being filled in the occlusal surface of the masticatory protrusion 316.

Thus, the distance between the alignment target part 3 and the masticatory protrusion 316 is corrected on the occlusal surface of the masticatory protrusion 316 by the correcting protrusion, and thereby the accurate occlusion vertical distance VD can be calculated. Here, the friction mark k is formed between the biting surface of the masticatory protrusion 316 and the aligning protrusion, so that the adhesion force between the chewing protrusion and the aligning protrusion can be improved. In this case, the curable resin ra filled in the outer surface 316c of the chewing protrusion may be selectively provided with one of a radiation-transmissive material and a radiopaque material.

Thus, the curable resin ra is filled between the masticatory protruding portion 316 and the alignment target portion 3 according to the vertical occlusion distance of the operator, and the re-lining is cured, whereby a three-dimensional plan image reflecting the precise vertical occlusion distance VD can be obtained. Thus, the accuracy of the finally manufactured dental restoration can be significantly improved.

On the other hand, referring to fig. 14 to 15, it is preferable that the first scanned image m11 includes a first registration reference image r11 of a registration reference point obtained by scanning the curable resin rb by the oral scanner.

Further, it is preferable that the third scanned image m13 include a second registration reference image r13 of a registration reference point obtained by scanning the curable resin rb by the oral scanner.

Preferably, the CT image m16 includes a third registration reference image r16 of a registration reference point obtained by the curable resin (rb in fig. 13) made of a radiopaque material.

On the other hand, the integrated scanned image m17 is preferably generated by the following steps. In detail, the first scanned image m11 and the second scanned image m12 are aligned in an overlapping manner with respect to a common portion of the third scanned image m 13. Here, it is preferable that the first registration reference image r11 of the first scanned image m11 and the second registration reference image r13 of the third scanned image m13 are aligned so as to overlap each other.

For example, the first registration reference image r11 and the second registration reference image r13 can be aligned to overlap each other.

On the other hand, a portion commonly displayed on the integrated scan image m17 and the CT image m16 is set as a registration reference point, and is superimposed and registered. Here, it is preferable that the third registration reference image r16 be aligned so as to overlap in a region where the first registration reference image r11 and the second registration reference image r13 overlap.

Thereby, the three-dimensional plan image m20 including the three-dimensional surface information m311r of the anastomosis correction unit displayed in the exchanged first scan image m21, the three-dimensional alveolar bone data a16 on the implantation target unit side, the three-dimensional surface information t12 of the apposition teeth, and the three-dimensional data is generated. At this time, the three-dimensional data of the apposition teeth displayed in the CT image m16 can be registered so as to be actually overlapped with the three-dimensional surface information t12 of the apposition teeth displayed in the integrated scan image m 17.

At this time, the plurality of scan images are aligned based on the third scan image obtained by scanning in a state of being engaged with the scanning wax bite, and the CT image m16 is obtained in a state of being engaged with the scanning wax bite. Therefore, the three-dimensional surface information and the three-dimensional data displayed on the CT image m16 and the integrated scan image m17 are actually aligned and registered corresponding to the same occlusion vertical distance VD. Thus, initial planning data minimizing errors can be acquired when registering the integrated scan image m17 and the CT image m 16. Therefore, the registration between the image data is easy to carry out, the registration process is simplified, and the accuracy and precision of the collected information can be obviously improved.

In this case, the terms "including", "constituting", "having" or "having" as described above mean that the corresponding constituent elements can be included unless otherwise specified, and therefore, it should be construed that other constituent elements can be further included without excluding other constituent elements. All terms including technical or scientific terms have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. Each term commonly used as a term defined in a dictionary should be interpreted as having a meaning consistent with the meaning possessed by the language of the related art, and should not be interpreted ideally or excessively formally unless explicitly defined in the present invention.

As described above, the present invention is not limited to the above embodiments, and a person skilled in the art can implement modifications without departing from the scope of the present invention as claimed.

Claims (13)

1. A wax bite model for scanning, which is formed so as to align and register a plurality of images acquired for designing a dental restoration in consideration of a vertical occlusal distance of a subject, and is disposed between an implantation target portion and an apposition target portion so as to correspond to a standard dental arch profile that has been set, the wax bite model for scanning comprising:

a variable fitting portion having a margin exceeding the width of the implantation target portion, softened by heat treatment at a temperature equal to or higher than a preset temperature, pressure-corrected to fit the outer surface contour of the implantation target portion, and formed of a paraffin material; and the number of the first and second groups,

and a mastication protrusion which is integrated with the variable anastomosis portion, protrudes so as to correspond to the target portion, and softens and is corrected to be engaged with the target portion when heat-treated at a temperature not lower than a predetermined temperature.

2. A wax bite for scanning as defined in claim 1,

the wax bite model for scanning is standardized to a plurality of standard arch profiles standardized in consideration of anatomical deviations of each age group and sex in accordance with a preset size, and is formed such that a thickness between an inner surface portion of the variable anastomotic portion and an outer surface portion of the masticatory protruding portion exceeds a standard occlusal perpendicular distance,

the surgical instrument further includes a motion recognition enhancing unit disposed on a recognition lowering surface of the wax bite model for scanning to provide a visible reference index when acquiring a gothic arch moving image of a three-dimensional motion trajectory of the jaw joint of the subject, and disposed at a pitch smaller than a maximum moving radius of the jaw joint moving in the left-right direction, the front-back direction, and the up-down direction.

3. A wax bite for scanning as defined in claim 2,

the motion recognition enhancing portion is formed of a radiopaque material, and is provided with registration markers arranged at a plurality of positions on the surface of the scanning wax bite.

4. A wax bite for scanning as defined in claim 2,

the motion recognition enhancing part is provided by a powder spray which is coated on the surface of the wax bite mould for scanning to form a discontinuous concave-convex surface.

5. A wax bite for scanning as defined in claim 2,

the motion recognition enhancing portion is displayed in a plurality of intaglio portions with predetermined intervals along the surface of the scanning wax bite.

6. A wax bite for scanning as defined in claim 2,

the motion recognition enhancing portion is displayed by water-insoluble ink which is layered in a plurality of patterns on the surface of the wax bite for scanning.

7. A wax bite for scanning as defined in claim 1,

the chewing protrusion is formed to protrude with a cross-sectional area corresponding to a standard dental arch profile that has been set,

a friction mark part including at least one of a scratch and an intaglio is formed on the occlusal surface of the chewing protrusion part to improve the adhesive force with respect to the curable resin filled when the chewing protrusion part is re-lined so as to correspond to the perpendicular occlusion distance of the operator.

8. A wax bite for scanning as defined in claim 1,

the wax bite for scanning is formed of a paraffin material and formed with a density of less than 2.0g/cm2 to be transmitted when a CT image is acquired by a Computed Tomography (CT) apparatus.

9. A wax bite for scanning as defined in claim 1,

a plurality of filling holes are formed through the variable anastomotic portion to provide a reference point for registration when performing oral cavity scanning,

the chewing gum further comprises a curable resin which is respectively filled in the filling hole and the occlusal surface of the chewing protrusion and is cured to provide a registration reference point and is re-lined corresponding to the occlusal vertical distance.

10. A wax bite for scanning as defined in claim 9,

the curable resin filled in the filling hole includes a radiopaque material to provide a registration reference point when acquiring a CT image.

11. A wax bite for scanning as defined in claim 9,

the filling hole is disposed on the recognition lowering surface of the wax-bite model for scanning to provide a visible reference index when acquiring a gothic-arch moving image of the three-dimensional movement locus of the jaw joint of the operator.

12. A wax bite for scanning as defined in claim 9,

further comprising a reinforcing face portion integrally connected to the variable engaging portion and the inside of the masticatory protruding portion and formed to support between both end portions of the variable engaging portion and the masticatory protruding portion,

the filling holes are formed at a plurality of positions in the front-rear direction and the up-down direction with a predetermined pitch left in each of the variable fitting portion and the reinforcing surface portion, and the curable resin is cured in a state filled in each of the filling holes.

13. A wax bite for scanning as defined in claim 9,

the curable resin is formed of a correction protrusion cured in a state of being filled in an occlusal surface of the masticatory protrusion, and corrects a distance between the alignment target portion and the masticatory protrusion in accordance with the occlusal perpendicular distance.

Images