KR101538097B1 - method for manufacturing surgical guide and crown, abutment in mouth for dental implant - Google Patents

Abstract

The present invention relates to a manufacturing method of a surgical guide, a crown, and an abutment for a dental implant procedure in order to improve accuracy of the implant procedure by exactly acquiring an image for the inside of a mouth of a patient. The present invention comprises: a first step of attaching and scanning a plurality of reference markers outside a first impression model which is manufactured as corresponding to a tooth implant target portion of the patient, and acquiring a first scanning image; a second step that an internal side corresponds to the tooth implant target portion by three-dimensional printing in order to protrude outside from an area side of the tooth implant target portion of the first scanning image, and inserts the reference markers into marker grooves of a splint which is manufactured while including the marker grooves assembled and disassembled with the reference markers, and stacks an occlusal base on an external side opposing a matching tooth; a third step of acquiring a CT image by cat scanning the splint of which an occlusal height is set in a state of installing the splint in the tooth implant target portion by adjusting the thickness of the occlusal base; a fourth step of overlapping the first scanning image and the CT image based on the reference markers, matching the first scanning image and the CT image on a difference map outputting a degree of assembly and disassembly between each image, and acquiring a three-dimensional occlusal guide image; and a fifth step of setting the height of the crown based on the three-dimensional occlusal guide image, and manufacturing the surgical guide including a guide groove portion assembling and disassembling a tooth internal shape of the patient and guide grooves formed in accordance with a fixture implant location corresponding to the set crown.

Description

TECHNICAL FIELD [0001] The present invention relates to a method for manufacturing a surgical guide and a crown, an abutment in a dental implant,

The present invention relates to a surge guide and a method of manufacturing a crown and an abutment for performing a dental implant treatment. More particularly, the present invention relates to a surge guide for dental implant treatment, Crown, and abutment.

Generally, an implant refers to a substitute for replacing a human tissue when the original human tissue is lost, but refers to implanting an artificial tooth in the dentistry. That is, a fixture made of titanium or the like which does not have a rejection reaction to the human body can be substituted for the lost root, and then the teeth are inserted into the alveolar bone, and the tooth is restored by fixing the artificial tooth.

In detail, in normal prostheses or dentures, the surrounding teeth and bones are damaged over time, but the implants can prevent damage to surrounding tooth tissues and can be used stably because there is no secondary tooth decay factor. In addition, since the implant has the same structure as the natural teeth, there is no pain or foreign body sensation of the gums, and it is advantageous that the implant can be used semi-permanently.

In the meantime, the implant treatment is performed by forming a perforation in the alveolar bone using a drill and placing the fixture in the perforation. Procedures for forming the perforation and implanting the fixture are different for each patient. This is because the position, depth, and orientation of the implant should be determined in consideration of various factors such as the patient's tooth condition, the position of the tooth requiring the implant treatment, and the condition of the alveolar bone of the patient.

As a result, the drilling operation for alveolar bone drilling has a difficulty in accurately measuring the depth and direction of the operator during the course of the operation as well as for the novice user. Further, in the case of a beginner who is not experienced in operation, It is very difficult to measure the depth to be treated.

Further, when forming the perforations in the alveolar bone, the practitioner applies the force to the drill to perform the drilling operation, and it is difficult to determine to what extent the drilling operation has been performed. Furthermore, drill insertion above a certain depth can cause serious problems that damage the nerve of the alveolar bone.

On the other hand, when the drilling operation is completed before reaching a certain depth, the depth of the drilled hole is shallow, and excessive force is required to fix the fixture. In addition, there was a problem that the screw around the perforation was damaged or the fixture could not be fixed perfectly, so that it was re-operated afterwards.

Accordingly, an auxiliary device called a surgical guide is used to grasp the exact position and direction to perform the drilling operation.

1 is a flowchart showing a conventional method of manufacturing a surge guide.

As shown in FIG. 1, a conventional surge guide is manufactured through the following process. First, a three-dimensional image of the inside of the subject's mouth is obtained through a CT scan, and a three-dimensional external shape image of the inside of the subject's mouth is obtained through an oral scan (s1).

Here, the three-dimensional image through the CT scan shows the shape of the crown (a part of the tooth revealed outside the gum) and the root (the part joined with the alveolar bone in the gum), and the shape of the alveolar bone and the bone density of the crown, root and alveolar bone Information.

In addition, the three-dimensional external shape image through the oral scan includes information on the shape of the crown and the gums in the oral cavity.

Then, when each image is acquired, the two images are matched with each other based on the intraoral point set by the practitioner, such as the singularity of the tooth (s2). Subsequently, an implant treatment plan is established through the image-matched result (s3), and a surge guide capable of guiding the treatment according to the treatment plan is manufactured (s4).

At this time, the surgeon guide for the procedure guide should be prepared by adding the experience of the practitioner along with various anatomical treatment conditions such as the thickness of the gum, the alveolar bone distribution, the position of the subject to be treated. For this purpose, it is preferable to use the external appearance data of the oral tissues together rather than to use only the direct data such as CT data.

In addition, the three-dimensional external shape image is acquired by moving the oral scanning device along the oral cavity of the subject and combining the scanned information. However, since the curvature of the dentition may appear distorted inside the oral cavity during the process of combining the scanned information, it is necessary to correct the image. In this way, in order to compensate for the insufficient information in each of the images and to correct the distorted information, the image matching step s2 is indispensable.

At this time, in order for the three-dimensional image and the three-dimensional outer shape image to be image-matched, a crown region, which is a common portion of the two images, is required. However, in the case of the edentulous patient, since there is no crown area itself, a common part between the three-dimensional image and the three-dimensional outer shape image hardly exists. As a result, there is a problem in that the image matching between the respective images is difficult and even if the matching is performed, the inaccurate information is provided.

Furthermore, when the mandible is edentulous in the inside of the oral cavity, since the shape of the mandible is not clearly specified because the amount of the gums is large and the motive tissue such as the tongue is distributed and the fluidity of the tissue is high, it is difficult to obtain the external shape through the oral scan.

In addition, even if the reference marker is attached to the inside of the mouth for use as a reference point of matching, there is a problem that the reference marker is not substantially fixed due to the fluidity of the tissue. Accordingly, in the image matching step, even if the reference markers are matched with the reference mark, the reliability of the obtained image is degraded.

On the other hand, when designing the crown of the implant to replace the lost tooth in the mouth of the client, the height, width, chewing surface, and chewing direction of the crown are calculated based on the information of the tooth remaining around the lost tooth. However, in the case of edentulous patients, there is no peripheral tooth to be compared. Therefore, the crown was designed through the experience of the practitioner or the existing procedure data.

Therefore, when the manufactured crown is placed inside the oral cavity, it is often the case that the treated person feels uncomfortable. In addition, since a plurality of crowns have to be manufactured and placed repeatedly to compensate for this, there is an increase in the cost of the procedure, an increase in the duration of the implant treatment, and inconvenience to the physician.

Korean Patent No. 10-0977911

In order to solve the above problems, there is provided a method for manufacturing a surge guide, a crown, and an abutment for a dental implant procedure in which an image of an inside of a mouth of a patient is accurately acquired and precision of an implant procedure is improved .

According to an aspect of the present invention, there is provided a method of manufacturing a toothbrush, the method comprising: a first step of attaching a plurality of reference markers to an outer side of a first impression model manufactured corresponding to a tooth placement target part of a client, The marking grooves of the splint prepared by three-dimensionally printing so as to protrude outward from the tooth placement target area surface of the primary scanning image and including the marker grooves whose inner surfaces correspond to the teeth to be placed and which are formed with the reference markers A second step of inserting the reference marker and laminating an occlusal base on an outer surface facing the mating teeth; A third step of obtaining a CT image by capturing a CT image in a state where a splint having an occlusion height is set on the tooth placement subject by adjusting the thickness of the occlusion base; A fourth step of superimposing the primary scanning image and the CT image on the basis of the reference marker and acquiring a three-dimensional occlusion guide image based on a deviation map that outputs a degree of fit between the images; And a guide groove formed along the fixture mounting position corresponding to the set crown, wherein the guide groove is formed in the inner groove of the mouth of the subject and the height of the crown is set based on the 3D- And a fifth step of manufacturing a crown and an abutment for a dental implant procedure.

The method may further include scanning the second impression model prepared corresponding to the contending tooth to obtain a second scanning image in the first step, wherein in the fourth step, the first impression model and the second impression model It is preferable that the integrated scanning image obtained by aligning the primary scanning image and the secondary scanning image according to an alignment reference mark between two impression models is matched with the CT image.

In this case, in the fourth step, the integrated scanning image may include a common portion of the occlusion scanning image obtained by scanning the occlusion state of the first impression model and the second impression model provided with the splint and the first and second scanning images It is preferable to obtain by arranging and arranging in the comparison area.

Further, in the step 3, the step of applying the curable aligning impression material provided on the upper surface of the occlusion base so as to guide the position of the engaging tooth to be occluded, wherein chewing marks of the opposed tooth are displayed at the time of occlusion of the upper and lower teeth .

On the other hand, in the fourth step, when the primary scanning image and the CT image are superimposed on the reference marker as a reference to output the degree of coupling between the images, the primary scanning image and the CT image And a step of correcting each image so that the top and outermost portions of the comparison region coincide with each other in the overlapping image.

Through the above-described solution, the method for manufacturing a surge guide, a crown, and an abutment for dental implant treatment according to the present invention provides the following effects.

First, a splint on which a marker groove capable of inserting a reference marker, which is substantially matched with the outer surface of the tooth placement target portion, which is a reference point for matching between the images, can be provided on the tooth placement target portion, The reliability of the matching criterion between the images can be remarkably improved.

Secondly, since the splint is manufactured by three-dimensional printing based on the primary scanning image, the CT image obtained by installing the splint in the oral cavity and CT photographing and the position of each reference marker displayed on the primary scanning image are substantially . Accordingly, the reference markers shown in the respective images are superimposed on each other to improve the degree of conformity, so that the precision of the surge arrester and the prosthesis designed from the matched images can be improved and the reliability of the implant procedure can be remarkably improved.

Thirdly, if a practitioner transmits the first impression model manufactured corresponding to the tooth placement target portion to the manufacturer, the scanning image can be obtained using the scanning equipment provided on the manufacturer side. Accordingly, it is possible to obtain a precise scanning image necessary for the implant treatment plan even if the operator is not equipped with a scanning apparatus or the operation of the scanning apparatus is inexact, and the cost incurred by purchasing a separate scanning apparatus from the operator side is reduced It is economical.

Fourth, since each of the impression models in which the occlusion base adjusted with the predetermined occlusion height is stacked, and the occlusal state of the inside of the wearer's mouth are scanned and CT images are taken, the vertical diameters calculated from the obtained images can be corresponded to each other. This improves the accuracy of the crown designed through the matched image because the degree of matching is significantly improved when matching each image.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a flow chart illustrating a conventional method of manufacturing a surge guide. FIG.
FIG. 2 is a flowchart illustrating a method for manufacturing a surgeon's guide and crown and abutment for dental implant treatment according to an embodiment of the present invention. Referring to FIG.
3 is a schematic view of a first impression model with reference markers according to an embodiment of the present invention;
4A and 4B are schematic views illustrating a splint manufacturing process according to an embodiment of the present invention.
5 is a schematic view showing a splint in which an occlusion base is stacked according to an embodiment of the present invention;
6A and 6B are schematic views illustrating a process of acquiring an image of a three-dimensional occlusion guide according to an embodiment of the present invention.
FIG. 7 is a schematic view showing a modified example of a process of acquiring an image of a three-dimensional occlusion guide according to an embodiment of the present invention; FIG.
FIG. 8 is a schematic view showing a main matching process for obtaining a three-dimensional occlusion guide image according to an embodiment of the present invention; FIG.
FIG. 9 is a schematic view illustrating a designing process for a dental implant according to an embodiment of the present invention; FIG.
10 is a schematic view of a surge guide manufactured in accordance with an embodiment of the present invention;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method for manufacturing a surge guide and crown and abutment for dental implant treatment according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a flowchart illustrating a method for manufacturing a surge guide and crown and abutment for performing a dental implant according to an embodiment of the present invention. 3 is a schematic view showing a first impression model with a reference marker according to an embodiment of the present invention. 4A and 4B are schematic views showing a splint manufacturing process according to an embodiment of the present invention, and FIG. 5 is a schematic view showing a splint in which an occlusion base according to an embodiment of the present invention is stacked. 6A and 6B are schematic views illustrating a process of acquiring an image of a three-dimensional occlusion guide according to an embodiment of the present invention, and FIG. 7 is a view illustrating a process of acquiring an image of a 3D occlusion guide image according to an embodiment of the present invention Fig. FIG. 8 is a schematic view illustrating a matching process for acquiring an image of a three-dimensional occlusion guide according to an embodiment of the present invention. FIG. 9 is a flowchart illustrating a design process for performing a dental implant procedure according to an embodiment of the present invention. And FIG. 10 is a schematic view showing a surge guide manufactured according to an embodiment of the present invention.

In the meantime, the dental implant treatment is performed by forming a hole in the alveolar bone using a drill, and placing the fixture in the hole. At this time, an auxiliary device called a surgical guide is used so as to grasp the exact position and direction to perform the drilling operation.

That is, if an implant treatment plan is established according to the state of the inside of the mouth of the patient, the surge guide is manufactured so that the surgeon can guide the established treatment plan and guide the direction or depth of the drilling or fixture placement can do.

As shown in FIGS. 2 to 10, a method for manufacturing a surgeon's guide, a crown, and an abutment for performing a dental implant according to an embodiment of the present invention is performed as follows. At this time, the method of manufacturing a surge guide, a crown, and an abutment for performing the dental implant treatment can be applied to an implant treatment of a patient having at least one of the maxillary and mandibular edentulous teeth.

First, a plurality of reference markers 40 are attached to the outside of the first impression model 110 manufactured in correspondence with the to-be-placed part of the subject and scanned to obtain a first scanning image 111 (s100). Here, it is preferable that the tooth placement target portion is a portion that is intended to perform the implant treatment because the natural tooth is lost on one side of the maxilla or mandible of the inside of the subject.

In detail, the first impression model 110 corresponding to the tooth placement target portion can be manufactured by obtaining the impression of the inside of the mouth of the subject who is to perform the implant treatment. Here, the manufacturing process of the first impression model 110 is as follows. First, an impression material such as alginate, silicon or rubber is applied to the outer surface of the to-be-placed part to form an impression body in which the shape of the to-be-placed part is formed in a negative shape. Then, the first impression model 110 corresponding to the tooth placement target portion can be manufactured by filling and solidifying zinc oxide eygenol ointment for gypsum to impression into the impression material. The method of manufacturing the impression model can be easily manufactured by a practitioner, for example, a method widely used on a practitioner's side, for example, a dentistry in which an implant is performed.

A plurality of reference markers 40 are attached to the outside of the first pull-up model 110. Here, the reference marker 40 may be attached as a matching reference for matching between images obtained for implant treatment, preferably in a plurality of three or more places. That is, as the matching reference between the respective images increases in the matching step, the degree of fit can be remarkably improved, so that the precision and reliability of the surge guide and the prosthesis manufactured for the dental implant treatment can be improved.

Here, the reference marker 40 may have a predetermined volume such as a cylinder or a polygonal column. At this time, either of the upper and lower surfaces facing each other may be attached to the outside of the first pull-up model 110, and the other surface thereof may be used as the matching reference at the matching.

Meanwhile, the reference marker 40 may be directly attached to the inside of the mouth of the subject, but it is preferably attached to the outside of the first impression model 110 manufactured corresponding to the tooth placement target portion of the subject Do.

In detail, in a edentulous patient, since the gum tissue of the tooth placement part is soft and fluidity is high, the reference marker 40 is not substantially fixed and flows even though it is attached. As a result, the reference markers 40 images displayed between the images can not be formed at the same position, which lowers the reliability as a matching reference.

In order to solve this problem, since the reference marker 40 is attached to the outer side of the first pulling-up model 110 which is firmly coupled to the tooth placing part and is prevented from flowing, the image of the reference marker 40 The positions can be substantially matched. As a result, the degree of association between the reference markers 40 and the images matched to the reference markers is improved, and the accuracy and reliability of the surge arrays and prostheses designed from the images can be remarkably improved.

At this time, the reference marker 40 may be attached to the tooth area 30a of the tooth-placing part to which the implant is to be performed, although the position of the reference marker 40 is not limited to the outer surface of the tooth-placing part. Here, the teeth region 30a is a region in which a natural tooth is disappeared, and substantially the portion of the prosthesis is placed, and is understood as a region corresponding to a top end of a rootstock.

When the first impression model 110 with the reference marker 40 is scanned, the first scanning image 111 (corresponding to the scanned image of the outer surface of the tooth placement object with the reference marker 40 attached thereto) Can be obtained.

At this time, the process of attaching the reference marker 40 and acquiring the primary scanning image 111 can be performed by a manufacturer, for example, a manufacturer equipped with a prosthetic device for manufacturing and supplying a prosthesis and a tool used in an implant procedure have. In detail, when the first impression model 110 manufactured by the practitioner is transmitted to the manufacturer, the reference marker 40 is attached to the outside of the first impression model 110 on the manufacturer side.

When the outer surface of the first impression model 110 with the reference marker 40 is scanned, the first scanning image 111 can be obtained. At this time, the primary scanning image 111 is converted into three-dimensional vector data through scanning, and the formed information may be digitized and stored in a storage device of a computer including a simulation program.

That is, if a practitioner transmits a first impression model 110, which can be easily manufactured in correspondence with the tooth placement target portion, to the manufacturer side, a scanning image is acquired using the scanning equipment provided on the manufacturer side can do. Accordingly, a precise scanning image necessary for the implant treatment plan can be obtained even if the operator is not equipped with a scanning device or the operation of the scanning equipment is inexact. In addition, the cost incurred by purchasing a separate scanning device from the practitioner side is reduced, and the troubles and inconveniences that the physician must visit the manufacturer for intraoral scanning can be solved.

Of course, in some cases, the operator attaches the reference marker 40 to the outside of the first impression model 110 on the side of a practitioner equipped with the scan equipment, and acquires the first scanning image 111 and transmits the same to the manufacturer And such variations are within the scope of the present invention.

In addition, the first impression model 110 may be manufactured corresponding to the tooth placement target portion, and the second impression model may be manufactured corresponding to the opposed tooth t. Here, the basic method of manufacturing the second impression model is the same as the method of manufacturing the first impression model 110 described above, and thus a detailed description thereof will be omitted.

The second impression model may also be scanned to obtain the secondary scanning image 121. [ Here, the secondary scanning image 121 includes three-dimensional contour information including an arrangement shape of the contour tooth (t) and a chewing surface shape. At this time, a plurality of reference markers 40 may be attached to a predetermined position of the second impression model, but it is possible to designate a solid outer tooth surface as a fixed comparison area in the case of the opposing tooth t, The attachment of the marker 40 may be omitted.

In the meantime, three-dimensional printing is performed so as to protrude outward from the tooth placement target area s of the primary scanning image 111, so that the inner surface of the marker scanning surface 111 corresponds to the tooth placement target portion, The reference markers 40 are inserted into the marker grooves 81 of the splint 80 made of the synthetic resin material 81 and the occlusion base 90 is laminated on the outer surface facing the opposing teeth t, .

here, The splint 80 is preferably a fixing device provided to substantially fix the reference marker 40, which is a reference for matching each image, to the outer surface of the gum with high fluidity of the tooth placement target portion.

In detail, the primary scanning image 111 includes the tooth placement target image and the reference marker image, which are displayed on the outer surface of the first impression model 110 as a three-dimensional image. Then, from the primary scanning image 111, a tooth placement target area s corresponding to the tooth placement target portion is set. Here, the tooth placement target area s may be arbitrarily set on the primary scanning image 111, or the computer may automatically calculate an image corresponding to the tooth placement target portion have.

At this time, it is possible to design the splint 80 that protrudes outward from the tooth placement target area s to form the tooth placement target surface area s as the mold groove 80a. That is, the tooth placement target area s projected and displayed in the primary scanning image 111 can be designed to be replaced with the mold recess 80a recessed inward in the splint 80. [ Then, the designed splint 80 is three-dimensionally printed, and the splint 80 having the mold recess 80a formed in the tooth placement target portion can be manufactured.

At this time, the manufactured splint 80 has a marker groove 81 formed inside the mold groove 80a to be engaged with the reference marker 40. The splint 80 is preferably protruded to a thickness not exceeding the upper and lower mandibular occlusion of the subject in a state where the splint 80 is installed on the outer surface of the tooth placement target portion and is formed to have a thickness of about 1.8 to 2.2 mm .

The reference markers 40 are inserted into the marker grooves 81 and the splint 80 is installed inside the mouth of the subject so that the mold groove 80a is formed with the outer surface of the to-be-placed person.

Here, the splint 80 is formed of a radiation-transmissive material that is not displayed on the CT image 114 acquired by CT imaging, and the reference marker 40 is a radiopaque material . Accordingly, only the soft tissues such as gums that are transmitted through the radiation, and the image of the alveolar bone of the tooth placement target portion except for the splint 80 and the image of the reference marker 40 can be displayed on the CT image 114.

Since the splint 80 is manufactured on the basis of the primary scanning image 111 obtained by scanning the first impression model 110 manufactured corresponding to the tooth placement target portion, The positions of the reference markers 40 attached to the first impression model 110 correspond to each other. Therefore, the image position of the reference marker 40 displayed on the primary scanning image 111 and the image position of the reference marker 40 displayed on the CT image 114 may correspond to each other.

Accordingly, the same position of the reference markers 40 displayed on each of the images is designated so that the degree of fit at the registration is remarkably improved. Therefore, the accuracy of the surge arrester 60 and the prosthesis designed from the matched image is improved, Can be remarkably improved.

An occlusal base 90 having a predetermined thickness is stacked on the outer side 80b of the splint 80 opposite to the opposed tooth t. Here, the occlusion base 90 is provided with the splint 80 on the tooth placement target portion, and a thickness corresponding to a space between the opposed tooth t and the upper surface of the splint 80 in a state where the upper and lower teeth are engaged with each other . ≪ / RTI > At this time, the occlusion base 90 may be made of a material that can easily change its shape by a pressing force or a cutting force while maintaining a predetermined shape such as wax or the like, so that the thickness can be selectively controlled according to the sensitivity of the wearer.

On the other hand, the thickness of the occlusion base 90 is adjusted to obtain a CT image 114 in which the vertical height is taken into consideration, while the splint 80 having the occlusion height is set on the tooth placement target portion of the subject (S300).

In detail, the thickness of the occlusion base 90 is adjusted in accordance with the feeling of feeling felt by the recipient during occlusion of the upper and lower malleus in a state where the splint 80, on which the occlusion base 90 is laminated, is installed on the to- Set the appropriate occlusal height for the wearer.

Specifically, when the upper and lower teeth are engaged with the splint 80 having the occlusion base 90 stacked on the tooth placement object, the upper surface of the occlusion base 90 is fixed to the end of the opposed tooth t And the like. The occlusion height can be set by repeating the process of cutting the upper surface of the occlusion base 90 in accordance with the depth of the chewing gum to adjust the thickness of the occlusion base 90 so that the patient can feel comfortable .

In addition, since the occlusion height is calculated according to the mental sensitivity sensed by the physician as well as the diagnosis of the practitioner, it is possible to calculate the occlusal height that can maximize the satisfaction of the procedure without imposing a burden on the jaw joint of the patient. Here, the mental sensitivity of the subject can be judged by direct expression of the physician, and the electrical and chemical signals of the jaw joint and the jaw muscles may be measured and judged according to circumstances.

In order to facilitate the adjustment of the thickness of the occlusion base 90, it is possible to set a suitable height of the occlusion to allow the wearer to feel comfort by repeating the process of cutting the upper surface after being stacked thicker than the expected occlusion height.

When the splint 80 having the occlusion height is set on the tooth placing part by adjusting the thickness of the occlusion base 90 and CT images are taken while the upper and lower jaws are occluded, the alveolar bone and the reference markers 40) can be obtained.

Here, the CT image 114 is a 3D image of the opposed tooth t and the alveolar bone shape of the tooth placement object in the state where the upper and lower jaws are occluded, so that the vertical height of the subject is obtained from the CT image 114 It can be easily calculated. At this time, the vertical height calculated from the CT image 114 may be reflected in setting a height of a crown to be designed later.

Further, since the CT image 114 is acquired in a state where the occlusion base 90 is placed on the tooth placement target portion with the splint 80 adjusted to a thickness suitable for the subject and the upper and lower teeth are engaged, Can be significantly improved.

At this time, the splint 80 manufactured on the basis of the primary scanning image 111 at the manufacturer side is transmitted to the operator side. Then, the delivered splint 80 can be installed inside the mouth of the subject on the side of the practitioner to acquire the CT image 114 through the CT imaging. Here, the occlusion base 90 and the reference marker 40 may be coupled to the splint 80 at the manufacturer side, and then transferred to the practitioner side, or may be coupled at the practitioner side as the case may be.

In the meantime, the three-dimensional occlusion guide image (refer to FIG. 1) is obtained by superimposing the primary scanning image 111 and the CT image 114 on the basis of the reference marker 40 and outputting the degrees of coupling between the images. 115) (S400).

In detail, three-dimensional appearance information of the reference markers 40 attached to the teeth placing part and the outside thereof can be obtained through the primary scanning image 111. Through the CT image 114, two-dimensional and three-dimensional internal tissue information about the oral cavity including the maxilla and mandible of the subject and the reference marker 40 image information can be obtained. In this case, the two-dimensional and three-dimensional internal tissue information is preferably understood as information such as the shape of the alveolar bone and the bone density of the inside of the subject acquired through the CT scan.

Here, since the image of the reference marker 40 is displayed at the corresponding positions of the primary scanning image 111 and the CT image 114, it is preferable that the reference marker 40 is matched based on the matching reference. Thereby, the 3D scanning guide image 115 including the information obtained from the primary scanning image 111 and the CT image 114 can be obtained.

In detail, reference markers 40, which are a common part of the primary scanning image 111 and the CT image 114, are superimposed on the reference and set as a comparison area. At this time, the comparison area may be set to a point, a line, or a plane corresponding to each other in the reference markers 40 displayed on the primary scanning image 111 and the CT image 114. Furthermore, the degree of associativity between the primary scanning image 111 and the CT image 114 can be remarkably improved by designating the comparison area at a plurality of locations.

Then, each image is corrected so that the uppermost part and the outermost part of the comparison area coincide with each other. In detail, the reference markers 40 are matched in pairs for mutually corresponding positions of respective images, and images of the respective pairs of reference markers 40 are overlapped to obtain an initial deviation map having a small error. In addition, an image correction operation may be performed in the image matching process using the first variation map to acquire the highly precise and matched three-dimensional occlusion guide image 115.

Here, the degree of fit refers to a degree of similarity between the primary scanning image 111 and the CT image 114 expressed by a combination error between the two images.

In detail, the lower the absolute value of the above-mentioned formulas, the more the two images coincide with each other and are superimposed on each other. On the contrary, the higher the absolute value of the above-mentioned combination error, the more the two images are overlapped. That is, when the fitting error is 0, the fitting degree is the highest, and the fitting degree becomes lower in proportion to the absolute value of the fitting error.

As the degree of association between the reference markers 40 displayed on each of the images is increased, it can be interpreted that the mutual opposed parts of the primary scanning image 111 and the CT image 114 are also higher .

For example, when the primary scanning image 111 and the CT image 114 are superimposed on the reference marker 40, the surface of the other image is protruded from the surface of one of the images It may appear to be depressed.

Furthermore, the degree of fit can be calculated through three-dimensional vector data of each image. That is, the three-dimensional vector data of each image can be converted into the same coordinate system, and height information of the surface of each image can be expressed numerically through three-dimensional vector data converted into the same coordinate system.

In detail, when the surface height of each image in the mutually superimposed state is compared and the surface of the other image is projected or depressed in each part of one image, the absolute value of the combining error is large, which means that the degree of fitting is low .

In this case, when the surface of the other image is protruded from the surface of the other image, the combining error has a positive value. If the surface of the other image is recessed from the surface of the one image, the combining error may have a negative value.

Here, as the degree of association is color-separated and output, the practitioner can promptly and intuitively judge the correctness of the corneal reflex in the image registration result. As a result, a rapid image calculation process can be performed, and a subsequent correction operation for obtaining a precise three-dimensional occlusion guide image 115 can smoothly proceed.

Meanwhile, the secondary scanning image 121 may be matched with the CT image 114 so as to obtain more precise shape information about the inside of the subject and improve the precision of the implant procedure.

The integrated scanning image 113 obtained by aligning the primary scanning image 111 and the secondary scanning image 121 according to the alignment reference mark between the first impression model 110 and the second impression model, Can be matched to the CT image 114.

As shown in FIGS. 6A and 6B, the primary scanning image 111 and the secondary scanning image 121 can be aligned and arranged first. An occlusal scanning image 131 (a scan image) obtained by scanning an occlusion state of the first impression model 110 and the second impression model provided with the splint 80 is guided so as to guide a precise alignment arrangement of the primary and secondary scanning images 111, ) Can be obtained.

In detail, the occlusion scanning image 131 is obtained by scanning in a state where the first impression model 110 and the second impression model are engaged, and the splint 80 is installed outside the first impression model 110 .

The common parts of the primary and secondary scanning images 121 and the occlusion scanning images 131 are set as alignment areas for alignment reference markings and arranged. Here, since each scanning image is acquired based on the first impression model 110 and the second impression model, a similar point on the outer surface of each impression model can be set as a comparison region.

For example, the outline edge points of the first impression model 110, which are commonly displayed on the primary scanning image 111 and the occlusion scanning image 131, can be designated and arranged as a comparison area. Any part of the opposing tooth t displayed in common with the secondary scanning image 121 and the occlusion scanning image 131 can be designated and arranged as a comparison area. At this time, an unnecessary portion (k) such as the splint 80 image including the occlusion base 90 may be erased from the occlusion scanning image 131 for a more clear alignment of the respective scanning images.

When the primary and secondary scanning images 121 are aligned and the occlusion image is erased, the primary and secondary scanning images 121 are generated corresponding to the vertical height calculated from the occlusion scanning image 131 Thereby obtaining an aligned scanning integrated image 113. [

Since the integrated scanning image 113 includes the image of the reference marker 40 provided from the primary scanning image 111, the combined scanning image 113 may include the reference marker 40, The reference markers 40 can be image-matched based on the matching reference. Accordingly, it is possible to obtain the three-dimensional occlusion guide image 115 in which the inside information of the inside of the subject, internal tissue information, and vertical height are taken into account.

At this time, the occlusion scanning image 131 is obtained by scanning and engaging the respective impression models in a state in which the splint 80 is installed, and the CT image 114 is obtained by cutting the upper and lower teeth in a state where the splint 80 is installed CT images of the occluded state are obtained. Since the occlusion base 90 with the occlusion height is stacked on the outer surface of the splint 80, the vertical heights calculated from the occlusion scanning image 131 and the CT image 114 may correspond to each other .

Here, the upper surface of the occlusion base 90 is formed with the upper and lower jaws of the subject in the CT image 114 substantially coinciding with the occlusion of the first and second impression dies 110, An alignment-in top portion 91 may be formed.

In detail, the alignment upper portion 91 is formed by curing the curable impression resin coated on the upper surface of the occlusal base 90 whose thickness is adjusted to a suitable occlusion height in the step of adjusting the occlusion height of the occlusal base 90 described above .

In this case, the aligned upper portion 91 is provided with the splint 80 to which the curable impression resin is applied on the upper surface of the occlusion base 90, and when the upper and lower teeth are occluded, May be formed as the chewing groove 91a. That is, the first impression model 110 and the second impression model are fixed to the mating groove 91a formed in the upper portion 91 of the alignment by aligning the end of the second impression model with the mating tooth t, Position.

The CT image 114 obtained by CT photographing the upper and lower teeth of the subject and the first impression model 110 and the second impression model are meshed with the CT image 114, The vertical diameters of the first and second guide grooves 131 may correspond to each other.

Of course, as shown in FIG. 6, the primary scanning image 111 and the secondary scanning image 121 may be matched with a corresponding portion of the CT image 114 as a matching reference.

In detail, the reference points of the reference markers 40, which are common parts of the primary scanning image 111 and the CT image 114, can be matched with each other as a comparison area. The predetermined positions on the outside of the opposing tooth (t), which is a common part of the secondary scanning image 121 and the CT image 114, can be mutually registered as a comparison area.

That is, the primary and secondary scanning images 121 may be aligned with the CT image 114 after aligning to take into account the vertical height, and in some cases, the primary scanning image ( 111 and the secondary scanning image 121, respectively, and these modifications fall within the scope of the present invention.

The height of the crown C is set on the basis of the three-dimensional occlusion guide image 115, and a fixed groove portion corresponding to the inner shape of the mouth cavity of the subject and a fixture corresponding to the set crown (C) f) a surge guide 60 including a guide hole 61 formed along the placing position is manufactured (s500).

Here, the crown C may be designed corresponding to the vertical dimension based on the three-dimensional occlusion guide image 115.

In detail, the vertical height can be calculated from the CT image 114 obtained through CT imaging in the occlusion state of the upper and lower malpositions in which the splint 80 is installed. In addition, the chewing surface shape, tooth arrangement type, and maxillary and mandibular contour information of the confrontation tooth (t) can be obtained through the primary scanning image 111 and the secondary scanning image 121. In addition, the positions of the abutment / crown C and the fixture f as well as the height and shape of the crown C can be set on the three-dimensional occlusion guide image 115 in combination.

That is, an appropriate crown height is calculated for the person skilled in the image superposition and registration step, which is performed stepwise before the manufacture of the surge guide 60, and it is possible to manufacture an accurate crown (C) based on this. This minimizes redesign and re-installation due to incorrect crown (C), minimizing the time and cost wasted during the procedure and enabling efficient and quick procedures.

The crown C is designed and manufactured to maximize the degree of satisfaction of the subject from the three-dimensional occlusion guide image 115 and a surge guide 60 capable of precisely guiding the installation of the crown C, Can be produced. Accordingly, it is possible to provide an implant base device capable of completing the placement of the fixture (f) and the attachment of the abutment / crown (C) in a short period of time by a single procedure.

10, the surge guide 60 includes a fixing groove portion that is formed in an inner shape of the mouth of the subject, and the guide hole 61 is formed along the positioning position of the fixture f. As shown in FIG. do.

At this time, the surge guide 60 is fixed to the to-be-placed part by being fixed to the to-be-placed part, and the fixture f is inserted through the guide hole 61 in a state where the surge guide 60 is fixed. The drilling for the drill hole can be drilled.

The surge guide 60 is designed from the external shape image of the tooth placing part included in the three-dimensional occluding guide image 115 so that the fixing groove part is substantially formed with the outer surface of the tooth placing part. Of course, the fixing groove portion may be obtained from the primary scanning image 111 obtained by scanning the first impression model 110 corresponding to the tooth placement target portion. Further, the fixing groove portion may be designed from the inner shape of the splint 80, which is three-dimensionally printed from the primary scanning image 111 so as to be substantially conformed to the outer surface of the tooth placement target portion.

When the fixing groove portion is designed, the direction of the guide hole 61 is set to be parallel to the fixture f mounting direction with reference to a state where the surge guide 60 is fixed to the tooth placing portion .

As described above, the present invention is not limited to the above-described embodiments, and variations and modifications may be made by those skilled in the art without departing from the scope of the present invention. And such modifications are within the scope of the present invention.

40: Reference Marker 60: Surgical Guide
80: Splint 81: Marker groove
90: occlusion base 91: alignment impression material
110: First impression model 120: Second impression model
111: primary scanning image 121: secondary scanning image
131: occlusion scanning image 113: integrated scanning image
114: CT image 115: image of three-dimensional bite guide
C: Crown t: Clam tooth

Claims (5)

A first step of attaching and scanning a plurality of reference markers to the outside of a first impression model manufactured corresponding to a tooth placement target part of a client, and acquiring a first scanning image;
The marking grooves of the splint prepared by three-dimensionally printing so as to protrude outward from the tooth placement target area surface of the primary scanning image and including the marker grooves whose inner surfaces correspond to the teeth to be placed and which are formed with the reference markers A second step of inserting the reference marker and laminating an occlusal base on an outer surface facing the mating teeth;
A third step of obtaining a CT image by capturing a CT image in a state where a splint on which an occlusion height is set by adjusting the thickness of the occlusion base is installed on the tooth placement target part;
A fourth step of superimposing the primary scanning image and the CT image on the basis of the reference marker and acquiring a three-dimensional occlusion guide image based on a deviation map that outputs a degree of fit between the images; And
And a guide groove formed along the fixture mounting position corresponding to the set crown, wherein the guide groove is formed on the fixation groove portion formed on the inner shape of the mouth of the subject and the height of the crown is set on the basis of the 3D- And a fifth step of fabricating the crown and abutment for the dental implant procedure. The method according to claim 1,
Further comprising the step of, in the first step, scanning a second impression model prepared corresponding to the contending tooth to obtain a secondary scanning image,
In the fourth step, the integrated scanning image obtained by aligning the primary scanning image and the secondary scanning image along the alignment reference mark between the first impression model and the second impression model is matched with the CT image And a crown and an abutment for the dental implant procedure. 3. The method of claim 2,
In the fourth step, the integrated scanning image
Wherein a common portion of the occlusion scanning image obtained by scanning the occlusion state of the first impression model with the splint and the second impression model and the common portion of the primary and secondary scanning images are set as a comparison region and are arranged and arranged A method for manufacturing surge guides and crowns and abutments for dental implant surgery. The method according to claim 1,
And applying a curable aligning impression material provided on the upper surface of the occlusion base so as to guide the position of the opposed tooth to be occluded in the step 3, wherein chewing marks of the opposed tooth are displayed at the time of occlusion of the upper and lower teeth A method for manufacturing a surge guide and crown and abutment for dental implant treatment. The method according to claim 1,
In the fourth step, when the primary scanning image and the CT image are superimposed on the reference marker as a reference to output a degree of fit between the images, the primary scanning image and the CT image are common Setting a portion as a comparison region;
And correcting each image so that the top and outermost portions of the comparison region coincide with each other in the overlapping image.

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