KR20200102123A - scanning purpose wax-bite - Google Patents

Abstract

In order to improve precision and reliability, the present invention relates to wax bite for scanning, which is arranged between an implantation target part and an association target part and formed to correspond to a preset standard dental arch profile, such that a plurality of images acquired for design of a dental restoration are arranged and matched in consideration of a vertical height of a person to be treated, and which is formed of a paraffin wax material. The wax bite for scanning comprises: a variable fitting part which has a margin part exceeding the width of a standard gum part corresponding to the implantation target part and is softened when heated to a preset temperature or higher so as to be pressure-corrected to fit into an outer surface profile of the implantation target part, and through which a plurality of filling holes are formed to provide a matching reference point during oral scanning; a mastication protrusion part integrally formed with the variable fitting part, protruding to correspond to the association target part, and softened when heated to a preset temperature or higher so as to be corrected to be occluded with the association target part; and curable resins providing a matching reference point to an occlusion surface of the filling holes and the mastication protrusion part, and each filled and cured to be relined corresponding to the vertical height.

Description

Scanning purpose wax-bite

The present invention relates to a wax bite for scanning, and more particularly, to a wax bite for scanning with improved precision and reliability.

In general, a dental restoration refers to an artificial periodontal tissue in the oral cavity that artificially restores appearance and function by replacing a missing tooth.

In detail, when the natural teeth are left in a lost state, distortion of the dentition occurs in the adjacent teeth and the opposing teeth of the missing teeth, resulting in deformation of the facial shape, deterioration of the mastication function, and increased discomfort in daily life. Moreover, when the loss of natural teeth persists for a long time, the alveolar bone surrounding the lost teeth is absorbed into the body, making it difficult to install artificial periodontal tissue.

At this time, the dental restoration is installed in the oral cavity to restore the mastication function and prevents deformation or damage of the antagonist tooth or the remaining tooth at the target arch side that requires a dental restoration. Here, the dental restoration may be provided as an artificial crown individually matched to the lost tooth, and may be provided in a form that replaces a plurality of or all missing teeth on the target arch side. These dental restorations are made of titanium or the like that has no rejection reaction to the human body to replace the lost roots and are fixed to the oral cavity through an implant (fixture) that is placed in the alveolar bone.

Therefore, the dental restoration can be used stably because there is no secondary caries generation factor. In addition, since it has substantially the same structure as a natural tooth, there is no pain or foreign body sensation in the gums, and it can be used semi-permanently if it is well managed.

On the other hand, in order to design the dental restoration suitable for each individual to be treated and install it in an accurate position, accurate and precise oral information is required. To this end, internal tissue information such as surface information of the oral cavity and alveolar bone shape/bone density are required together. Accordingly, an image registration process of acquiring a 3D external shape image and a 3D image corresponding to the maxillary and mandible of the patient to be treated and aligning and matching the 3D image corresponding to the vertical height is required.

In detail, the 3D external shape image is obtained by collecting information scanned using an oral scanner along the oral cavity of the patient to be treated. In this case, the 3D external shape image is distorted to appear different from the actual oral cavity in the process of collecting the scanned information. Therefore, it is required to correct the distorted dental curvature in the 3D external shape image based on the 3D image acquired through CT imaging.

In addition, in order to prepare an implant suitable for the target arch of the person to be treated and to set the height of the tooth restoration, the 3D image is preferably obtained through CT scans in a state in which the upper and lower jaws are occluded with respect to the person's vertical height. .

However, when at least one arch of the maxillary and mandible is a partial edentulous jaw or a complete edentulous jaw in which most of the teeth have been lost, there is a problem that the maxillary and mandibles are difficult to be separated from each other in response to a vertical height suitable for the operator. Therefore, in order to align and match the 3D external shape image and the 3D image corresponding to the vertical height, a process of accurately calculating a vertical height is required.

In detail, conventional methods of calculating the vertical height of the person to be treated include a method of calculating the vertical height using an articulator after taking an impression, a method of using a tracer, a method of using a splint that is custom-made according to the person to be treated.

First, the method of using the articulator after taking the impression is to fill the impression material in the tray and then take the impression of the oral cavity, and calculate the vertical height while adjusting the spacing of the gypsum model produced by using the articulator. This method has a problem in that the process is complicated, such as taking an impression and producing a plaster model, and since the vertical height is not calculated directly from the patient's mouth, its precision is degraded.

In addition, the method of using the tracer is to install the stunt needle and the stunt board on the upper and lower jaws, respectively, and calculate the vertical height while adjusting the spacing in consideration of the intermaxillary relationship. In this method, while performing the process of adjusting the height of the stunt needle to correspond to the vertical height, there was a discomfort in that the operator had to repeatedly open and close the oral cavity.

In addition, a separate gypsum model must be produced in order to accurately install the grave board on the upper and lower jaw. That is, after manufacturing a gypsum model, the positions of the staging board and staging needle are aligned and arranged using resin, putty, or wax. In addition, there is a problem in that it takes an excessive amount of time to measure the vertical height, such as installing a resin, putty, or a preparation board attached to the wax in the oral cavity.

In addition, the method of using a custom-made splint acquires an image of an oral or impression model of a person to be treated, and designs and manufactures an individual splint based on this. Next, after laminating/filling a wax rim and a resin on the inner and outer surfaces of the prepared splint, it is installed in the oral cavity to calculate the vertical height. This method has a problem in that the number of visits of the person to be treated increases, such as a step for manufacturing a splint and a step for acquiring an image using the manufactured splint.

In addition, since the probability of occurrence of an error in the process of transferring the impression model or the acquired image to the manufacturer increases, there is a problem that the reliability of the individually manufactured splints decreases. Moreover, there is a problem in that the overall cost and duration required for tooth restoration are increased due to custom-made splints for each patient to be treated.

Moreover, in order to accurately calculate the vertical height, a wax rim and a resin are laminated/filled on the inner and outer surfaces of the splint.Since the wax rim and the resin are not adhered to the surface of the splint and are separated and flowed, the reliability of the obtained vertical height is reduced. There was a problem.

Korean Patent Registration No. 10-0977911

In order to solve the above problems, the present invention makes it a problem to provide a wax bite for scanning with improved precision and reliability.

In order to solve the above problems, the present invention is arranged between the implantation target part and the antagonist target part so that a plurality of images acquired for the design of the dental restoration are aligned and matched in consideration of the vertical height of the person to be treated, and a preset standard teeth In the scan wax bite formed corresponding to the arch profile, it has a margin that exceeds the width of the implantable portion, but is softened when heated to a predetermined temperature or higher, and is press-corrected to match the outer profile of the implantable portion, A variable fitting portion through which a plurality of filling holes are formed to provide a matching reference point during oral scanning, and formed of a paraffin wax material; A mastication protrusion formed integrally with the variable fitting part and protruding to correspond to the mating target part, and softening when heated to a predetermined temperature or higher and corrected to occlude the mating target part; And it provides a registration reference point on the occlusal surface of the filling hole and the mastication protrusion, and provides a wax bite for scanning including a curable resin that is filled and cured so as to be re-lined corresponding to the vertical height.

Here, it is preferable that the curable resin filled in the filling hole includes a radiopaque material to provide a matching reference point when obtaining a CT image.

In addition, the scanning wax bite is standardized and manufactured in plural according to a preset size corresponding to the standardized dental arch profile in consideration of age and gender anatomical deviations, and the inner surface of the variable fitting part and the outer surface of the mastication protrusion It is formed so that the thickness between the parts exceeds the standard vertical height, and the filling hole is located on the recognition deterioration surface of the scanning wax bite to provide a visible reference indicator when obtaining a gothic arch motion image for the three-dimensional motion trajectory of the jaw joint of the patient. It is preferred to be placed.

In addition, further comprising a reinforcing surface portion integrally connected to the inside of the variable fitting portion and the mastication protrusion and formed to support between the variable fitting portion and both ends of the mastication protrusion, wherein the filling hole is formed on the variable fitting portion and the reinforcing surface portion. It is formed through a plurality of locations at predetermined intervals in the front-rear direction and the vertical direction, respectively, and the curable resin is preferably cured in a state filled in each of the filling holes.

In addition, the mastication protrusion is formed to protrude in a cross-sectional area corresponding to a preset standard dental arch profile, and the curable resin is the occlusal surface of the mastication protrusion so that the gap between the mating target part and the mastication protrusion is corrected in correspondence with the vertical height. It is formed as a cured correction protrusion in a state filled in, and a friction mark including at least one of a scratch and an intaglio is formed on the occlusal surface of the mastication protrusion to improve adhesion with the curable resin.

Through the above solution means, the present invention provides the following effects.

First, unlike the prior art that used custom-made splints that increased cost/time or tracers that were inconvenient to operate, the inner and outer surfaces of general-purpose wax bites prepared as ready-made products standardized in various sizes are heated to apply a simple occlusal pressure. It can be corrected to guide the vertical height in a way, so the usability can be remarkably improved.

Second, since the registration reference point is exposed and displayed on the scanning image and the CT image by a curable resin of a radiopaque material injected into the filling hole through a plurality of places on the lower recognition surface, the 3D planning image generated through the registration of each image As the reliability is remarkably improved, the precision of the final manufactured dental restoration can be remarkably improved.

Third, since friction marks are formed on the occlusal surface of the mastication protrusion due to scratches and intaglios, etc., when filling the curable resin that is filled in the occlusal surface of the mastication protrusion corresponding to the vertical height of the person to be treated, as the surface area of the mastication protrusion increases, mutual adhesion Since this is improved, a 3D planning image reflecting a precise vertical height can be obtained.

Fourth, a three-dimensional planning image reflecting a precise vertical dimension is obtained through relining in which the curable resin is filled and cured between the mastication protrusion and the opposing object in correspondence with the vertical height of the person to be treated, so the precision of the final manufactured tooth restoration Can be significantly improved.

Fifth, as the curable resin is filled in the filling hole formed on the lower recognition surface of the scanning wax bite, the motion recognition rate is enhanced when obtaining a gothic arch motion image for the motion of the jaw joint through the dynamic scanner. Since the subsequent correction of the artificial crown mastication surface is minimized, the convenience of the procedure can be remarkably improved.

1A and 1B are a front view and a plan view on which a part of a wax bite for scanning is projected according to an embodiment of the present invention.
2 is a plan view showing a modified example of a wax bite for scanning according to an embodiment of the present invention.
Figure 3 is a cross-sectional view showing a process of correcting the wax bite for scanning according to an embodiment of the present invention.
4 is an exemplary view showing a process of acquiring an integrated scanning image using a scanning wax bite according to an embodiment of the present invention.
5 is an exemplary view showing a process in which a CT image acquired using a scanning wax bite according to an embodiment of the present invention is superimposed and matched to an integrated scanning image.

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.

In this case, the present invention can be applied to a partial edentulous or edentulous jaw in which it is difficult to calculate an occlusal vertical dimention (VD) due to a large amount of loss of natural teeth on at least one side of the maxilla and mandible.

In addition, in the present invention, it is preferable to understand that the implantation target part means a tooth jaw in which a scanning wax bite and a tooth restoration are substantially installed, and the antagonist target part means a tooth that is occluded with the implantation target part. Hereinafter, the implantation target portion encompasses an impression model prepared corresponding to the mandible or mandible of the oral cavity, and the mating target portion includes an impression model prepared corresponding to the maxilla or maxilla of the oral cavity, and is described and illustrated. Of course, the present invention may encompass an impression model in which the implantation target portion is prepared corresponding to the maxillary or the upper jaw, and an impression model in which the opposing target portion is prepared corresponding to the mandible or the mandible may be encompassed.

In addition, the term dental restoration in the present invention encompasses a partial/complete prosthesis and a partial/complete denture in which an artificial crown and a plurality of artificial crowns are integrally provided as one set to individually correspond to a defective tooth. It is desirable to understand.

In addition, the present invention can be carried out using a manufacturing system including an imaging device, a planning unit, and a manufacturing device. Here, the imaging device is preferably understood to encompass an oral scanner and a computed tomography. In detail, a plurality of the scanning images, which are three-dimensional surface information on the outer surfaces of the implantation target part 2, the mating target part 3, and the scanning wax bite 310F, are obtained using the oral scanner. Then, the CT image, which is internal tissue information about the shape and density of the alveolar bone of the maxilla and mandible, is obtained using the computed tomography machine. In addition, the planning unit is preferably understood as a design device for designing the dental restoration based on each image data acquired using the imaging device and pre-stored design information.

In addition, in the present invention, the operator to be treated refers to a patient who needs tooth restoration, and the operator and the operator refer to dentists and medical personnel to whom dental restorations are installed. In addition, the manufacturer's side and the manufacturer refer to dental laboratories and dental technicians that manufacture/supply dental restorations and tools for installing them.

1A and 1B are a front view and a plan view in which a part of a scanning wax bite according to an embodiment of the present invention is projected, and FIG. 2 is a plan view showing a modified example of the scanning wax bite according to an embodiment of the present invention. to be. And, Figure 3 is a cross-sectional view showing a process of correcting the wax bite for scanning according to an embodiment of the present invention, Figure 4 is an integrated scanning image using the wax bite for scanning according to an embodiment of the present invention. It is an exemplary diagram showing the process of obtaining. 5 is an exemplary view showing a process in which a CT image acquired using a scanning wax bite according to an embodiment of the present invention is superimposed and matched to an integrated scanning image.

1 to 5, the scanning wax bite 310F according to a preferred embodiment of the present invention includes a variable fitting part 315, a mastication protrusion 316, and a curable resin.

Here, the scanning wax bite 310F is the placement target part 2 and the mating target part 3 so that each image data acquired for designing the dental restoration is aligned and matched in consideration of the vertical height of the person to be treated. It is a tool placed in between.

At this time, the scanning wax bite 310F is provided as a ready-made product, but is preferably formed of a material that can be corrected in response to a vertical height suitable for each individual to be treated. Therefore, in the process of acquiring each image data required when designing the dental restoration, the correct vertical dimension can be guided through the scanning wax bite 310F corrected according to the operator. Here, each image data is preferably understood as a concept encompassing a plurality of scanning images and CT images.

On the other hand, the scanning wax bite 310F is formed by being standardized corresponding to a preset standard dental arch profile (da), and it is preferable that the variable fitting portion 315 and the mastication protrusion 316 are integrally formed.

In detail, the scanning wax bite 310F has an outer surface portion 316a protruding from one side to be occluded between the implantation target portion 2 and the mating object portion 3, but the inner surface portion 315b to a predetermined depth. It is depressed and is formed in an arcuate shape as a whole. It is preferable that this arch shape corresponds to the standard dental arch profile (da). Here, the standard dental arch profile (da) is preferably understood as an area surface having a predetermined area corresponding to the gap between the outer and the inner side of the gingival bone surrounding the alveolar bone, which is the part where the teeth are actually arranged on the implantation target part. . In this case, the outer side of the gum part is a part corresponding to the labial and buccal side, and the inner side of the gum part is preferably understood as a part corresponding to the lingual side.

It is preferable that the standard dental arch profile (da) is standardized and calculated in consideration of anatomical deviations by age and gender. In detail, it is preferable that the standard dental arch profile (da) is divided and calculated in stages in response to an average value representing the size of the arch by age and gender. Through this, the scanning wax bite 310F may be divided to have a predetermined size and prepared for a general purpose. For example, the scanning wax bite 310F may be divided into 6 of the maxillary side large/medium/small and the mandibular side large/medium/small, and may be set and provided as a ready-made product standardized for general use.

That is, in the present invention, since the vertical diameter is guided using the scan wax bite 310F mass-produced as a ready-made product, the period required to calculate the vertical diameter when designing the dental restoration is shortened, and the overall cost is reduced, which is economical. Through this, it is possible to solve the conventional problem that excessive time and cost are required to calculate the vertical height due to the use of a tracer or a custom-made splint.

In detail, in the case of the tracer, a separate impression model is required in order to be accurately installed in the oral cavity, and since the practitioner or manufacturer is the practitioner or the manufacturer who substantially controls the stunt needle, a difference from the vertical height determined by the practitioner may occur. In addition, in the case of an individually custom-made splint, inaccurate information may be reflected due to an error in the process of repeatedly transmitting/delivering information for designing it between the operator and the manufacturer. On the other hand, in the present invention, since the performer who determines the mastication sensitivity and corrects the thickness and shape of the scan wax bite 310F based on this is the person to be treated, the vertical height optimized for each person to be treated can be reflected. have. Accordingly, the precision and accuracy of the dental restoration designed and manufactured based on the accurately calculated vertical height can be remarkably improved.

Further, the scanning wax bite 310F is prepared as a ready-made product, but it is preferable to be standardized and mass-produced in a plurality of sizes so that it can be universally applied to the oral cavity of a variety of subjects or impression models corresponding thereto. Accordingly, the operator's side can use the scanning wax bite 310F in advance for each size, and can be used immediately at the visit of the operator, thereby remarkably improving user convenience. In addition, in the step of acquiring information on the implantation target part and the mating target part before installing the dental restoration, the number of visits by the person to be treated may be substantially minimized once.

In addition, as soon as the scanning wax bite 310F is corrected to be suitable for each person to be treated, a scanning image and the CT image may be obtained. At this time, since the plurality of scanning images and the time points at which the CT images are acquired are substantially the same, the degree of matching of each image data can be remarkably improved.

On the other hand, the variable fitting portion 315 is provided on the inner side of the scanning wax bite 310F, and is preferably formed to have a margin portion 315a exceeding the width of the standard gum portion corresponding to the implantation target portion. . In addition, the writing protrusion 316 is provided on the outer surface side of the scanning wax bite 310F and is integrally formed with the variable fitting portion 315, and is preferably formed to protrude so as to correspond to the mating target portion.

Furthermore, referring to FIGS. 1A to 1B, the mastication protrusion 316 is formed in an arc shape corresponding to a preset standard dental arch profile da, and may be formed to have an outer surface corresponding to the outer shape of the tooth. That is, the mastication protrusion 316 may be formed to include a mastication surface corresponding to an actual tooth shape and an interdental correspondence portion 316b.

Here, the interdental correspondence portion 316b may be marked as an intaglio, and may be used as an alignment marker that becomes an alignment criterion when disposed between the placement target portion and the mating target portion. In detail, the alignment marker may be aligned in response to a predetermined visible reference index on either side of the placement target part and the mating target part. In this case, the visible reference indicator may be formed as the interdental of the remaining teeth on the opposing side, and in some cases, an upper platoon or a lower platoon corresponding to the midline of the human body may be set as the visible reference indicator.

Accordingly, when correcting the scanning wax bite 310F, the inner and outer surfaces may be accurately corrected corresponding to the implantation target portion and the mating target portion. In addition, even if the corrected scan wax bite 310F is repeatedly installed/separated between the implantation target portion and the mating target portion, it may be uniformly guided to an accurate position.

In addition, as shown in FIGS. 1A to 1B, in the mastication protrusion 316, the boundary region between the anterior and posterior teeth is depressed toward the variable fitting 315 so that the anterior and posterior teeth can be partitioned from each other. In this case, the outer surface 316a of the mastication protrusion on the anterior tooth side may be formed to have an outer surface corresponding to the outer shape of the tooth. That is, the mastication protrusion 316 may be formed to include a mastication surface corresponding to an actual tooth shape and the interdental correspondence portion 316b.

In addition, the outer surface 316c of the mastication protrusion on the posterior side may be partitioned with the outer surface 316a of the mastication protrusion on the anterior tooth side to protrude in a cross-sectional area corresponding to a preset standard dental arch profile. Here, the occlusal surface of the mastication protrusion 316 includes at least one of scratches and intaglios to improve adhesion to the curable resin filled during relining so as to correspond to the vertical height of the operator to be treated (k ) Can be formed. At this time, the friction mark portion (k) is preferably formed of at least one of a plurality of scratches and a plurality of intaglios so that the surface area of the mastication protrusion 316 is increased.

Here, a separate dental resin for vertical diameter alignment between the mastication protrusion 316 and the mating target portion may be filled and occluded, thereby relining. These dental resins may be provided with alginate, putty or curable resin, which are commonly used when taking impressions in dentistry. Hereinafter, a case where the dental resin is provided as a curable resin will be described and illustrated as an example.

Accordingly, the friction mark portion (k) is formed on the occlusal surface of the mastication protrusion 316 by scratches and intaglios, so that the curable resin filled in the occlusal surface of the mastication protrusion 316 corresponds to the vertical height of the operator. During filling, the surface area of the mastication protrusion 316 is increased. Through this, since the adhesion between the authoring protrusion 316 and the curable resin is improved, a three-dimensional planning image reflecting a precise vertical height may be obtained.

In addition, the mastication protrusion 316 may have a recessed portion in which a boundary region between an anterior and posterior tooth is recessed toward the variable fitting portion 315. Here, it is preferable to understand that the depression is formed in which a region corresponding to the canine or premolar of the tooth is formed. Accordingly, the anterior tooth portion formed similar to the actual tooth based on the depression portion and the posterior tooth portion formed to increase the surface area during relining are partitioned from each other, so that accuracy can be improved when obtaining a vertical diameter.

On the other hand, referring to FIGS. 1A to 1B, the margin portion 315a is preferably formed to exceed the width of the standard gum portion. Here, the width of the standard gum part is preferably understood as a standardized horizontal interval between the outer and inner sides of the gum part calculated in consideration of age-specific and gender anatomical deviations. It is preferable to understand this as a standardized transverse interval between the labial and lingual of the gingival part, which is calculated in consideration of age-specific and gender anatomical variations. Moreover, it is preferable to understand that the width of the standard gum part substantially corresponds to or is set to be larger than the standard dental arch profile (da).

Accordingly, the clearance portion 315a may be formed to have an area that is extended in the transverse direction than the width of the standard gum portion. Through this, the scanning wax bite 310F may be disposed so as to entirely surround the inside and outside of the gum part of the implantable portion. In addition, the inner surface 315b of the variable fitting portion 315 may be formed to be concave with a smaller curvature than the convex outer surface profile of the average gingival portion side. Accordingly, a sufficient clearance volume capable of correcting the fitting may be secured while the outer surface of the placement target portion is in total contact with the variable fitting portion 315.

On the other hand, in the present invention, the inner surface portion 315b of the scanning wax bite 310F is substantially the same as the inner surface 315b of the variable fitting portion 315, so it is preferable to understand that it is described and illustrated with the same number. In addition, since the outer surface portion 316a of the scanning wax bite 310F is substantially the same as the outer surface 316a of the writing protrusion 316, it is preferable to understand that it is described and illustrated with the same number.

In addition, the scanning wax bite 310F has an average vertical thickness calculated by considering the anatomical deviations by age and gender between the inner surface 315b of the variable fitting part 315 and the outer surface 316a of the mastication protrusion 316 It is preferably formed larger than the high hardness. Therefore, in a state where the inner and outer surfaces of the scan wax bite 310F softened by heating treatment is disposed between the implantation target part and the mating target part, sufficient clearance thickness that can be corrected by the pressure to be simply occluded will be secured. I can.

Meanwhile, referring to FIG. 2, the scanning wax bite 310G according to a modified example of an embodiment of the present invention is integrally connected to the inside of the variable fitting portion 315 and the writing protrusion 316, but the variable fitting portion It is preferable to further include a reinforcing surface portion 311c formed to support between 315 and both ends of the mastication protrusion 316.

In detail, the reinforcing surface portion 311c may be formed to support between both ends of the variable fitting portion 315 and the mastication protrusion 316 formed in an arcuate shape. Through this, even if the occlusal pressure is applied while the inner and outer surfaces of the scanning wax bite 310G are softened and the support strength is reduced, twisting or fracture can be prevented.

Here, the scanning wax bite 310G is set to be bent in a standardized shape to accommodate the tongue when applied to the mandible and can be manufactured for general use, and when applied to the maxilla, it is manufactured for a general purpose corresponding to the standard shape of the hard palate. Can be. In addition, when corresponding to the maxillary side, since the reinforcing surface portion 311c is supported on the hard palate and corrected for occlusion, it is possible to prevent the position of the scanning wax bite 310G from sliding while occluding. Accordingly, the corrected wax bite 310G for scanning may be precisely corrected to accurately guide the vertical height.

On the other hand, referring to FIGS. 1A to 2, it is preferable that a plurality of filling holes 318 are formed on the recognition-degrading surface of the scanning wax bite so that the curable resin is filled and cured. In this case, the recognition-lowering surface means a smooth portion of the surface including the front portion of the scanning wax bites 310F and 310G. Here, there is a concern that the acquisition rate of image data for the wax bite for scanning may decrease during oral scanning and motion scanning due to the lower recognition surface.

In detail, the plurality of filling holes 318 are preferably formed through the variable fitting portion 315 and the reinforcing surface portion 311c to provide a matching reference point when matching each image data acquired through oral scanning. Accordingly, as the curable resin is filled in the filling hole 318 formed on the lower recognition surface of the scanning wax bite 310F and 310G, image data for the registration reference point is provided when the scanning image and the CT image are acquired. At the same time, the motion recognition rate is enhanced when a gothic arch motion image is acquired for the jaw joint motion. Accordingly, since the subsequent correction of the artificial crown authoring surface designed and manufactured based on the motion image is minimized, the convenience of the procedure can be remarkably improved.

Here, it is preferable that the filling hole 318 is formed through the variable fitting portion 315 and the reinforcing surface portion 311c at predetermined intervals in the front-rear direction and the vertical direction, respectively. In addition, any one of the filling holes 318 formed through the front side of the variable fitting portion 315 may be formed in the front central portion of the oral cavity corresponding to the interdental correspondence portion 316b, the upper lip ovary, or the lower lip ovary. In addition, a plurality of filling holes 318 may be disposed at predetermined intervals in both directions from the filling hole 318 formed in the front central portion of the oral cavity.

In addition, in some cases, the spacing between the filling holes 318 formed on the front side of the variable fitting part 315 among the recognition lowering surfaces may be disposed at a spacing less than the maximum moving radius of the jaw joint. Here, when the interval between each of the filling holes 318 exceeds the maximum moving radius of the jaw joint, the same color and smooth surface structure of the scanning wax bite 310F during motion scanning of the jaw joint movement through the dynamic scanner Therefore, there is a fear that the motion trajectory cannot be recognized. That is, when the dynamic scanner scans the motion of the jaw joint, a dynamic image obtained by scanning the motion change of the lower recognition surface of the scanning wax bite is converted into a 3D modeling file. At this time, the recognition rate of the dynamic scanner was lowered due to the smooth recognition deterioration surface during the image conversion process. Accordingly, as the interval between the filling holes 318 formed on the lowering surface is arranged to be less than the maximum moving radius of the jaw joint, the motion recognition rate of the dynamic scanner is enhanced, so that an accurate motion image can be obtained.

On the other hand, the curable resin provides a registration reference point on the occlusal surface of the filling hole 318 and the mastication protrusion 316, and is preferably filled and cured so as to be re-lined corresponding to the vertical diameter (VD). That is, the curable resin may be used for the purpose of providing a matching reference point and the purpose of calculating the vertical height (VD).

In detail, referring to FIG. 3, 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 similar to the color of the gum part of the person to be treated, the curable resin may be provided in a blue color or the like.

Through this, when the scanning image is acquired through the oral scanner in a state in which the scanning wax bite 310F is disposed between the implantation target part 2 and the mating target part 3, the registration reference point is displayed in a different color. Can be. In this case, the scanning image means three-dimensional surface information on the outer surface of the implantation target portion 2, the mating target portion 3, and the scanning wax bite 310F obtained using an oral scanner.

Accordingly, a matching reference point is displayed by the curable resin (rb) injected into the filling hole 318, and a plurality of scanning images to be described later are matched to correspond to the vertical height (VD). Can be created.

In addition, it is preferable that the curable resin (rb) is cured while being filled in each of the filling holes 318 formed on the lowering surface. In this case, it is preferable that the curable resin (rb) filled in the filling hole 318 includes a radiopaque material so as to be imaged when obtaining a CT image to provide a matching reference point.

Here, the curable resin (rb) containing a radiopaque material is individually injected into each of the filling holes 318 formed through the variable fitting portion 315 and the reinforcing surface portion 311c through a separate curable resin filling device. Can be. In this case, the curable resin (rb) including a radiopaque material may be provided as a product such as Parkell's blu mousse, but is not limited thereto.

In addition, the scanning wax bite 310F in a state in which the curable resin (rb) containing a radiopaque material is filled in each of the filling holes 318 and cured is provided with the implantation target portion 2 and the A CT image is obtained while being disposed between the mating target portions 3. At this time, the CT image refers to internal tissue information on the shape and density of the alveolar bone of the maxilla and mandible obtained using a computed tomography machine. At this time, as the curable resin (rb) contains a radiopaque material, the entire cured area in the state filled with the curable resin (rb) is displayed on the CT image. Accordingly, a registration reference point may be provided as a CT image is imaged and displayed in a region filled with and cured of the curable resin rb including the radiopaque material.

Through this, the matching reference point is exposed and displayed on the scanning image and the CT image by the curable resin (rb) made of a radiopaque material injected into the filling hole 318 penetrating a plurality of places on the recognition deterioration surface. That is, the integrated scanning image and the CT image in which a plurality of scanning images to be described later are matched may be easily registered through alignment of each registration reference point. Accordingly, the reliability of the 3D planning image generated by matching the CT image and the integrated scanning image can be remarkably improved, so that the precision of the final tooth restoration can be remarkably improved.

In addition, referring to FIG. 3, the curable resin (ra) may be filled and cured so as to be re-lined corresponding to the vertical height (VD) of the person to be treated on the outer surface 316c of the mastication protrusion on the posterior tooth side.

Here, the mastication protrusion 316 is formed to protrude in a cross-sectional area corresponding to a preset standard dental arch profile, and the curable resin (ra) is a correction protrusion cured in a state filled in the occlusal surface of the mastication protrusion 316. Can be formed. In this case, the correction protrusion means a state that is finally corrected as the curable resin (ra) is filled in the occlusal surface of the mastication protrusion 316 and is cured.

Accordingly, as the distance between the mating target portion 3 and the mastication protrusion 316 on the occlusal surface of the mastication protrusion 316 is corrected through the correction protrusion, the correct vertical diameter VD can be calculated. . Here, the friction mark portion k is formed between the occlusal surface of the mastication protrusion 316 and the correction protrusion, so that mutual adhesion may be improved. In this case, the curable resin (ra) filled in the outer surface 316c of the mastication protrusion may be selectively provided with one of a radio-transmissive or radio-opaque material.

Through this, a precise vertical height (VD) is reflected through relining in which the curable resin (ra) is filled and cured between the mastication protrusion part 316 and the counterpart part 3 in correspondence with the vertical height of the person to be treated. A dimensional planning image is obtained. Therefore, the precision of the tooth restoration that is finally manufactured can be significantly improved.

Meanwhile, referring to FIG. 3, the scanning wax bite 310F is standardized as a ready-made product and prepared for general use, but is selected and used as a product having a size suitable for the patient to be treated. In addition, the scanning wax bite 310F is disposed between the implantation target part 2 and the mating target part 3, and the variable fitting part 315 faces/corresponds to the implantation target part 2 It softens when heated above a preset temperature. In addition, when the mastication protrusion 316 faces/corresponds to the mating target portion 3 is heated to a predetermined temperature or higher, it is softened. In this case, it is preferable to understand that the parts indicated by w1 and w2 in FIG. 3 are softened by heating.

In addition, before or after each image data is acquired, the inner and outer surfaces of the scanning wax bite 310F are disposed between the implantation target portion 2 and the mating target portion 3 in a softened state. At this time, the inner and outer surfaces of the scanning wax bite 310F are warmed and softened to have weaker strength than the placement target part 2 and the mating target part 3. Accordingly, the inner profile of the variable fitting part 315 and the outer profile of the mastication protrusion 316 are deformed to correspond to the outer profile of the implantation target part 2 and the mating target part 3 by the occlusal pressure. . Along with this, the thickness between the variable fitting portion 315 and the mastication protrusion 316 is deformed in correspondence with the vertical height VD.

In detail, the inner surface of the variable fitting part 315 is concavely depressed by the occlusal pressure so as to correspond to the convex outer surface of the implantable part 2. Accordingly, an intaglio groove corresponding to the placement target portion 2 may be formed in the variable fitting portion 315 and corrected by the fitting correcting portion 315r. In addition, a mastication mark is formed by the occlusal pressure so that the outer surface of the mastication protrusion 316 corresponds to the end of the mating target part 3, for example, the end profile of the mating tooth t, and the bite correction part 316r ) Can be corrected. In addition, the gap between the joint correction unit 315r and the occlusal correction unit 316r may be corrected to substantially correspond to the vertical height VD.

In addition, each image data obtained with the joint correction unit 315r and the occlusal correction unit 316r formed and the re-hardened scanning wax bite 310F installed includes the vertical height (VD) information. do. As described above, since the scan wax bite 310F is standardized and mass-produced in a certain form, the production cost and the production period are shortened, so that it is economical and can be easily corrected to a surface profile suitable for each recipient. Accordingly, the vertical height (VD) calculated/acquired using the corrected scan wax bite 310F and the precision/accuracy of each image data can be remarkably improved.

It is preferable that the scanning wax bite 310F is formed of paraffin wax. The paraffin wax is solid at room temperature and has a predetermined support strength, and it is easy to correct cutting using a tool such as a knife. Therefore, when natural/repaired teeth remain in the implantation target portion 2 or the length of the scan wax bite 310F is long, it may be cut or divided and used. Moreover, when the interdental correspondence part (312b in FIG. 3A) or the alignment mark part (314b in FIG. 4) is formed on the mastication protrusion 316, it is possible to cut or divide based on this, so that the usability is further improved. Can be.

In addition, the paraffin wax has a melting point in the range of 47 to 64° C. and has physical properties that soften even without applying high temperature heat. Therefore, even if it is applied directly to the oral cavity in a heated state, it is safe, and it is rapidly cured at less than a preset temperature, so that the degree of conformity with the implantation target portion 2 and the mating target portion 3 can be maintained. Moreover, since the paraffin wax has a low shrinkage in the process of softening and curing, the degree of conformity between the implantation target portion and the mating target portion, and the accuracy of the calculated vertical diameter can be remarkably improved.

Here, it is preferable that the paraffin wax contains 70 to 85% by weight of paraffin (eg, ceresin) and other additives in the remaining% by weight based on the total weight%. For example, the paraffin wax may include 77 to 85% by weight of ceresin, 7 to 13% by weight of beeswax, 1.5 to 3% by weight of canaoba, 2 to 4% by weight of resin, and 1.5 to 3% by weight of microcrystalline wax.

On the other hand, it is preferable that the inner and outer portions of the scanning wax bite 310F are heated in the range of 40 to 55°C. In addition, the inner and outer surfaces of the scan wax bite 310F softened by heating treatment are disposed between the implantation target part 2 and the mating target part 3, and are occluded to correspond to a preset vertical diameter (VD). Pressure is applied. Accordingly, the inner surface portion of the scanning wax bite 310F is press-corrected so as to correspond to the outer surface profile of the insertion target portion 2, and is integrally formed with the mold fitting portion 315r. In addition, the outer surface portion of the scanning wax bite 310F is corrected to correspond to the mating target portion 3 and is integrally formed with the bite correction portion 316r. In this case, a gap between the joint correction portion 315r and the occlusion correction portion 316r may be formed to correspond to the vertical height VD.

Here, when the inner and outer surfaces of the scanning wax bite 310F are heated to less than 40° C., they cannot be softened to have a strength less than that of the implantation target part 2 and the mating target part 3. For this reason, even if the occlusal pressure is applied, it is difficult to correct the inner and outer surfaces of the scanning wax bite 310F to correspond to the outer profiles of the implantation target portion 2 and the mating target portion 3. On the other hand, if the temperature exceeds 55°C, the phase changes to a liquid phase excessively. For this reason, the fluidity of the inner and outer surface portions of the scanning wax bite 310F is excessively increased, so that it is difficult to correct into a clear shape corresponding to the implantation target part 2 and the mating target part 3. In addition, if the scanning wax bite 310F is directly installed in the oral cavity, there is a risk of burns due to high temperature.

Therefore, the inner and outer surfaces of the scanning wax bite 310F are in the range of 40 to 55°C so that they are softened to the extent that they can maintain a substantially corrected shape while having a strength weaker than that of the implantation target part and the mating target part. It is preferred to be heated.

In addition, the scanning wax bite 310F is preferably heated to be limited to the inner and outer surfaces corresponding to the implantation target part 2 and the mating target part 3. Accordingly, while the overall shape of the scanning wax bite 310F is maintained, the inner surface and the outer surface can be easily corrected so that they are molded/occupied with the implantation target part 2 and the mating target part 3, respectively. have.

At this time, the scanning wax bite 310F may be put into a container in which hot water of 45 to 55° C. is accommodated to be heated. Alternatively, heating may be performed using a heating device through which hot air is discharged, and any means capable of softening the inner and outer surfaces of the scanning wax bite 310F by heating may be applied to the present invention.

In addition, a dental resin containing a separate curable resin is filled and occluded between the joint correction unit 315r and the implantation target portion 2 so that the joint correction unit 315r is formed more precisely, and relining can be (relining). That is, the degree of conformity between the joint correction part 315r and the implantation target part 2 as it hardens while the dental resin is filled in the gaps or pores with the implantation target part 2 that may occur while the paraffin wax is cured. Can be further improved. Such a curable resin may be provided with a viscosity such that the soft tissue of the gum portion of the implantation target portion 2 is not excessively pressed and deformed.

Meanwhile, the scanning wax bite 310F is integrally formed to have a body substantially between the inner surface portion corresponding to the insertion target portion 2 and the outer surface portion corresponding to the mating object portion 3 desirable. Therefore, due to the lamination of wax and curable resin of a releasable material on the inner and outer surfaces of the occlusal check means such as a tray or splint, the lamination portion becomes smooth during occlusion, and the conventional problem of twisting in the lateral direction or changing its position can be fundamentally solved. I can. That is, since the occlusal pressure can be applied substantially in the vertical direction of the scanning wax bite 310F, the accuracy of the calculated vertical diameter VD can be remarkably improved. In this way, based on the corrected scan wax bite 310F, the implantation target part 2 and the mating target part 3 may be occlusal arrangements to correspond to the vertical diameter VD optimized for the operator.

Here, when the scanning wax bite 310F is directly installed and corrected in the oral cavity, the vertical height (VD) may be determined by the expression of intention according to the direct mastication sensitivity of the operator, and It can also be determined by measuring electrical/chemical signals. That is, in a state where the scanning wax bite 310F is inserted into the oral cavity, as the operator actually occludes the upper and lower jaw, the scanning wax bite 310F may be corrected to correspond to the vertical height (VD).

Alternatively, when the implantation target portion and the opposing target portion are provided as an impression model, the scan wax bite 310F may be disposed between the impression models connected to the upper and lower jaw through an articulator. In addition, while the impression model is occluded and arranged to correspond to the vertical height (VD) statistically calculated using the articulator, the occlusal pressure may be applied. Accordingly, the inner and outer surfaces of the scanning wax bite 310F may be corrected by the joint correction unit 315r and the occlusion correction unit 316r.

As described above, the present invention uses the ready-made wax bite 310F for scanning, while cost is reduced, the surface profile of the inner and outer surfaces thereof and the spacing between them are individually corrected according to the vertical height (VD) of each person to be treated. do. Therefore, the vertical height (VD) optimized for each person to be treated can be accurately calculated, and through this, the overall accuracy and precision of tooth restoration can be remarkably improved.

At this time, the scanning wax bite 310F may be disposed between the implantation target part 2 and the mating target part 3 before acquiring each image data to be corrected according to the occlusal pressure. Alternatively, the image data for the implantation target part 2 and the mating target part 3 before the scanning wax bite 310F is installed is obtained in advance, and the scanning wax bite 310F is installed after the implantation. Image data for the object portion 2 and the opposing object portion 3 may be additionally obtained.

On the other hand, a plurality of scanning images of the implantation target portion and the opposing target portion are acquired using the oral scanner. In addition, the CT image of the oral cavity occluded through the scanning wax bite is obtained using the computed tomography machine.

In this case, it is preferable that the plurality of scanning images include a scanning image obtained with respect to the implantation target portion and the mating target portion before the scanning wax bite is installed. In addition, it is preferable to include a scanning image obtained with respect to the implantation target portion and the counterpart portion after the corrected scanning wax bite is installed.

In detail, referring to FIG. 4, the plurality of scanning images includes a first scanning image (m11) of the entire outer surface of the scanning wax bite corrected so that the joint correction unit and the occlusion correction unit are integrally formed. desirable. And, it is preferable to include a second scanning image (m12) of the outer surface of the target portion. In addition, it is preferable to include a third scanning image (m13) of the outer surface of the implantation target portion and the mating target portion occluded through the corrected scanning wax bite.

Here, the first scanning image m11 includes 3D surface information (m311r) of the alignment correction unit and 3D surface information (m312r) of the occlusion correction unit. Dimensional surface information is displayed as an image.

In addition, it is preferable that the first scanning image m11 include a first registration reference image r11 for a registration reference point obtained by scanning the curable resin (rb in FIG. 3) through the oral scanner.

In addition, in the second scanning image m12, three-dimensional surface information on the outer surface of the target portion is displayed as an image. At this time, when the antagonist teeth remain in the antagonist target portion, the 3D surface information t12 of the antagonist teeth is displayed as an image in the second scanning image m12. Alternatively, when the opposing target portion side is edentulous, the second scanning image m12 may display 3D surface information of the gum portion on the opposing target portion side as an image. Further, in the step of generating the 3D planning image, standardized dental data on the side of the opposing object previously stored in the planning unit may be imaged and arranged virtually.

In addition, in the third scanning image (m13), the gum part of the implantation target part is covered on the inner surface side of the scanning wax bite, and the end of the mating target part is partially covered on the outer surface side, so that the three-dimensional outer surface of the occlusal state Surface information is displayed as an image. In this case, the third scanning image m13 is obtained in a state in which the implantation target portion and the mating target portion are occluded through the scanning wax bite. Accordingly, in the third scanning image m13, three-dimensional surface information corresponding to the scan wax bite and the labial outer surface and the buccal partial outer surface of the object to be scanned are displayed as images.

In addition, it is preferable that the third scanning image m13 include a second registration reference image r13 for the registration reference point obtained by scanning the curable resin (rb in FIG. 3) through the oral scanner.

Here, the plurality of scanning images may be obtained by directly scanning the oral cavity of the patient before and after the installation of the scanning wax bite using the oral scanner. In this case, a traction device for pulling soft tissue such as lips and cheek mucosa to be spaced apart from the outside of the gum may be used. Of course, in some cases, the plurality of scanning images may be obtained by scanning the impression model before and after the scanning wax bite is installed.

On the other hand, the CT image (m16 in FIG. 5) is preferably obtained by directly imaging the oral cavity through a computed tomography machine while the scanning wax bite is installed and occluded. Through this, the CT image (m16 in Fig. 5) has a low density, so that the 3D data of the alveolar bone on the side of the target part, except for soft tissues such as lips, cheek mucosa, and gums, through which radiation is transmitted, and the 3D antagonist teeth on the side of the target part. Data and the like are imaged and displayed.

In addition, the CT image (m16 in FIG. 5) preferably includes a third registration reference image r16 for the registration reference point obtained through the curable resin (rb in FIG. 3) made of a radiopaque material.

Moreover, it is preferable that the scanning wax bite is formed in a predetermined color to be clearly displayed on the motion image and the plurality of scanning images. In addition, the scanning wax bite is preferably formed to have a density of less than 2.0 g/cm 3 so as not to be transmitted and displayed when the CT image (m16 in FIG. 5) is acquired. Therefore, the CT image (m16 in FIG. 5) obtained in the state in which the scanning wax bite is installed and occluded is considered to have a vertical height, but the alveolar bone on the side to be implanted and the antagonist/alveolar bone on the side to be antagonized are Clearly indicated. Through this, the accuracy and precision of each image data acquired using the imaging device can be remarkably improved.

The plurality of scanned images and the CT images (m16 in FIG. 5) thus obtained are transmitted to the planning unit. In addition, it may be collected as information for establishing a tooth restoration plan through the tooth restoration through a subsequent image alignment and registration process.

Meanwhile, referring to FIG. 7, the integrated scanning image m17 is preferably generated by including the following steps. In detail, the first scanning image m11 and the second scanning image m12 are overlapped and aligned based on a common portion with the third scanning image m13. Here, it is preferable that the first matching reference image r11 of the first scanning image m11 and the second matching reference image r13 of the third scanning image m13 are overlapped and aligned with each other. In this case, the common part of each scanned image may be set as a specific part having a boundary that is clearly distinguished from the surroundings while the organization is hard and fluidity due to external force is minimized.

For example, the first matching reference image r11 and the second matching reference image r13 may be overlapped and aligned with each other. In addition, the first scanning image (m11) and the third scanning image (m13) are selected as a common part of the three-dimensional surface information (v11, v13) of the scanning wax bite displayed identically in each image. And can be set as an overlapping reference point. In addition, in the second scanning image m12 and the third scanning image m13, a specific portion of the 3D surface information t12 and t13 of the opposing teeth displayed identically in each image is selected as a common portion and overlapped. It can be set as a reference point.

Such overlapping reference points may be set in a plurality of places, and through this, the degree of conformity between each image may be remarkably improved in the process of overlapping and arranging each image. Through this, the first scanning image m11 and the second scanning image m12 are aligned and arranged in a state in which the vertical height is considered based on the third scanning image m13.

On the other hand, it is preferable that the first scanning image (m11) is swapped so that the three-dimensional surface information (m311r) of the mold fitting correction unit, which is concave inwardly corresponding to the inner surface of the scanning wax bite, is exposed to the outside. Do. Here, it is preferable to understand that the term "swap" means that a preset image is replaced or exchanged with another image or an image transformed according to image processing.

Accordingly, the three-dimensional surface information m311r of the mating correction unit and the three-dimensional surface information on the outer surface of the mating object are arranged in a state in which the vertical height is considered, and the integrated scanning image m17 is generated.

In detail, the first scanning image m11 includes three-dimensional surface information on the entire outer surface of the scanning wax bite whose inner and outer surfaces are corrected by the occlusal pressure. Hereinafter, the three-dimensional surface information of the scanning wax bite is preferably understood as the three-dimensional surface information of the scanning wax bite in a state in which the inner and outer surfaces are corrected.

At this time, the three-dimensional surface information of the wax bite for scanning is stored by interconnecting a plurality of points having a preset coordinate value. For example, the three-dimensional surface information of the scanning wax bite can be stored as an STL file (StereoLithography file), and has a triangular surface by a plurality of points and a line connecting them corresponding to the outer surface shape of the scanning wax bite. Is formed. Accordingly, the 3D surface information of the scan wax bite may be stored as a 3D surface model having a substantially hollow interior.

Here, the 3D surface information of the scanning wax bite includes 3D surface information m312r of the occlusal correction unit on the side of the outer surface portion that is convexly displayed outward. In addition, the three-dimensional surface information of the scan wax bite includes three-dimensional surface information m311r of the matching correction unit on the inner surface side that is concave inwardly.

At this time, a boundary line (x) is set along an outer edge of the 3D surface information m311r of the matching correction unit, and the 3D surface information on the side of the writing protrusion is set as an erase area (d). In addition, as the erasing area d is erased, the image is swapped so that the 3D surface information m311r of the mating correction unit is convexly exposed toward the mating target part. Here, it is preferable to understand that the outer edge of the three-dimensional surface information m311r of the matching correction unit is a line set corresponding to the outermost edge of the margin. In addition, in the present invention, it is preferable to understand that the term “erased” encompasses the deletion of the image or data in the overall image data and the process of being transparently invisible.

Meanwhile, the three-dimensional surface information of the scanning wax bite is stored as surface information having no thickness. Accordingly, in the 3D surface information m311r of the shape fitting correction unit, the coordinate values for the inner profile and the coordinate values for the outer profile are substantially the same. In addition, the three-dimensional surface information m311r of the fitting correction unit is obtained by being corrected to substantially match the outer surface profile of the placement target portion. Therefore, the three-dimensional surface information (m311r) of the fitting correction unit substantially corresponds to the outer surface profile of the gum portion of the implantation target portion. At this time, it is preferable to understand that indicated by m21 in FIGS. 7 and 11B means the first scanning image swapped with the three-dimensional surface information m311r of the matching correction unit exposed to the outside.

Accordingly, as the first scanning image m11 including the three-dimensional surface information of the scanning wax bite is swapped, three-dimensional surface information on the outer surface profile of the gum portion of the implantable portion can be easily obtained. Moreover, instead of the oral cavity with high fluidity of the soft tissue gums, in the softened state, the implantation target portion from the scanning image of the scanning wax bite having a solid strength in the cured state even though it has fluidity that can be corrected by the occlusal pressure. 3D surface information corresponding to is obtained. Through this, the reliability of image information for designing the tooth restoration can be remarkably improved.

Here, it is preferable that the third scanning image m13 is erased within the integrated scanning image m17 so that the first scanning image m21 swapped with the second scanning image m12 is clearly displayed. .

Meanwhile, referring to FIG. 7, a part commonly displayed in the integrated scanning image m17 and the CT image m16 is set as a registration reference point, and overlapped and matched. Here, it is preferable that the third registration reference image r16 is overlapped and aligned in an area where the first registration reference image r11 and the second registration reference image r13 overlap.

Through this, the three-dimensional surface information (m311r) of the joint correction unit displayed on the swapped first scanning image (m21), the three-dimensional alveolar bone data (a16) on the side to be implanted, and the three-dimensional surface information ( t12) and the 3D planning image m20 including 3D data are generated. In this case, the 3D data of the opposing teeth displayed on the CT image m16 may be matched to substantially integrally overlap with the 3D surface information t12 of the opposing teeth displayed on the integrated scanning image m17.

At this time, the plurality of the scanning images are aligned based on the third scanning image obtained by scanning in an occlusal state through the scanning wax bite, and the CT image m16 is occluded through the scanning wax bite. It is acquired as a state. Accordingly, the 3D surface information and 3D data displayed on the CT image m16 and the integrated scanning image m17 are aligned and matched to correspond to substantially the same vertical height (VD). Accordingly, when the integrated scanning image m17 and the CT image m16 are matched, initial planning data with minimal errors may be obtained. Through this, the accuracy and precision of the collected information can be remarkably improved while the matching between each image data is easy and the matching process is simplified.

In this way, the height of the tooth restoration is set based on the generated three-dimensional planning image m20. In addition, design information (c20) of the tooth restoration, whose mastication surface shape is set in consideration of the 3D surface information (t12) of the opposing teeth, is virtually arranged in the 3D planning image (m20).

In addition, the placement position and direction h20 of the fixture may be set through the 3D data a16 of the alveolar bone on the side to be implanted based on the CT image m16. In addition, a virtual fixture (f20) capable of supporting the mastication pressure is virtually arranged in correspondence with the placement position and direction (h20), and a real fixture corresponding to the virtual fixture (f20) is prepared or manufactured. I can. In addition, a real abutment may be prepared or manufactured to mediate between a real tooth restoration manufactured based on the design information c20 of the tooth restoration and the real fixture.

As described above, the present invention can calculate the vertical diameter by a simple method in which the occlusal pressure is applied while the inner and outer surfaces of the scanning wax bites 310F and 310G prepared as standardized ready-made products of various sizes are heated. Therefore, unlike the conventional case of using a custom-made splint that increases cost/time or a tracer that is inconvenient to operate, the time and cost required for calculating the vertical height can be reduced, while the convenience of use can be significantly improved. At this time, the scanning wax bites 310F and 310G are formed of paraffin wax, and when occluding at a predetermined temperature or higher, they are easily deformed and rapidly cured in response to the soft tissue gum portion, so that the vertical diameter can be precisely guided. In addition, since the correction of the scan wax bite 310F and 310G and acquisition of each image data can be performed at the same time at the time of one visit by the person to be treated, the overall period and cost of tooth restoration can be significantly reduced.

Moreover, as the scanning wax bites 310F and 310G are manufactured as a single body with paraffin wax, the occlusal pressure is uniformly transmitted in correspondence with the occlusal direction, so that twisting or breakage can be minimized. Through this, the joint correction unit 315r and the occlusal correction unit 316r are accurately and accurately acquired on the inner and outer surfaces of the scanning wax bite 310F, 310G, and the reliability of the information collected based on this is significantly improved. Can be.

In addition, the fitting correction unit 315r is re-lined by a curable resin and corrected to have a high degree of conformity with the implantation target portion. Accordingly, it is possible to obtain accurate information through the scanning image of the mold fitting correction unit 311r instead of the implantation target portion 2, which is mostly a gingival tissue having strong fluidity. Through this, the precision in the design and manufacture of the dental restoration can be remarkably improved.

At this time, the terms such as "include", "consist", "have" or "have" described above mean that the corresponding component can be present unless otherwise stated otherwise, It should be construed as not excluding components, but as being able to further include other components. All terms, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art, unless otherwise defined. Terms generally used, such as terms defined in the dictionary, should be interpreted as being consistent with the meaning of the context of the related technology, and are not interpreted as ideal or excessively formal meanings unless explicitly defined in the present invention.

As described above, the present invention is not limited to each of the above-described embodiments, and it is possible to be modified and implemented by those of ordinary skill in the art without departing from the scope claimed in the claims of the present invention. And, these modifications are within the scope of the present invention.

310F,310G: Wax bite for scanning 315: Variable joint
315a: clearance 315b: inner surface
316: mastication protrusion 316a: outer surface
316b: interdental response part 318: filling hole
da: standard dental arch profile m11: first scanning image
m12: second scanning image m13: third scanning image
m16: CT image m17: Integrated scanning image
m20: 3D planning image

Claims (5)

Wax bite for scanning that is disposed between the implantation target and the antagonist so that a plurality of images acquired for the design of dental restorations are aligned and matched by considering the vertical height of the person to be treated, and formed in response to a preset standard dental arch profile. In,
It has a margin that exceeds the width of the implantation target part, but is softened when heated to a predetermined temperature or higher, and is pressure-corrected to match the outer profile of the implantation target part, and a plurality of filling holes penetrate to provide a matching reference point during oral scanning. Doedoe formed, a variable mold formed of a paraffin wax material;
A mastication protrusion formed integrally with the variable fitting part and protruding to correspond to the mating target part, and softening when heated to a predetermined temperature or higher and corrected to occlude the mating target part; And
A scanning wax bite comprising a curable resin that provides a registration reference point on the occlusal surface of the filling hole and the mastication protrusion, and is filled and cured, respectively, to be re-lined in correspondence with the vertical height. The method of claim 1,
The curable resin filled in the filling hole includes a radiopaque material to provide a matching reference point when obtaining a CT image. Wax bite for scanning characterized by. The method of claim 1,
The scanning wax bite is standardized by a preset size corresponding to the standardized dental arch profile in consideration of age-specific and gender anatomical deviations and manufactured in plural, between the inner surface of the variable fitting part and the outer surface of the mastication protrusion. Is formed so that its thickness exceeds the standard vertical diameter,
The filling hole is a scanning wax bite, characterized in that it is disposed on the recognition deterioration surface of the scanning wax bite to provide a visible reference index when obtaining a gothic arch motion image for a three-dimensional motion trajectory of a jaw joint of a subject to be treated. The method of claim 1,
Further comprising a reinforcing surface portion integrally connected to the inside of the variable fitting portion and the mastication protrusion and formed to support between both ends of the variable fitting portion and the mastication protrusion,
The filling hole is formed through a plurality of places at predetermined intervals in the front-rear direction and the vertical direction, respectively, on 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. Wax bite. The method of claim 1,
The mastication protrusion is formed to protrude in a cross-sectional area corresponding to a preset standard dental arch profile, and the curable resin fills the occlusal surface of the mastication protrusion so that the gap between the mating target part and the mastication protrusion is corrected in correspondence with the vertical height. It is formed with a cured correction protrusion in a
A scanning wax bite comprising at least one of a scratch and an intaglio formed on the occlusal surface of the mastication protrusion to improve adhesion to the curable resin.

Images