KR102526419B1 - Method of realizing normalized dentition reflecting dental compensatory movement according to skeletal discrepancy - Google Patents

Abstract

The present invention relates to a method for realizing a normalized dentition reflecting compensatory movement of the dentition due to skeletal incongruity. A generating unit generating a normalized dentition in a normal skeleton from dentitions arranged in a malocclusion form of the subject, and (B) a compensatory movement implementing unit rotating or and moving to implement compensatory movement.

Description

Method of realizing normalized dentition reflecting dental compensatory movement according to skeletal discrepancy}

The present invention relates to a method for realizing a normalized dentition reflecting compensatory movement of the dentition due to skeletal incongruity.

Skeletal malocclusion is the overgrowth or overgrowth and asymmetry of the maxilla and mandible, either alone or in combination, and is known to be relatively common in Northeast Asia. Since patients with skeletal malocclusion have skeletal anterior-posterior disharmony as well as transverse disharmony, compensatory movement appears in the entire maxillary and mandibular dentition to compensate for each skeletal disharmony. In general, in malocclusion, the maxillary and mandibular incisors are inclined labially or lingually, and as the anterior-posterior skeletal incongruity intensifies, it is known that the axis of the anterior teeth is particularly affected.

As disclosed in the patent documents of the prior art literature below, various technologies for deriving tooth data for orthodontic treatment have been developed, but the technology used for orthodontic treatment by implementing compensatory movement of the dentition in the dentition due to skeletal mismatch is non-existent.

KR 10-2351053 B1

The present invention is intended to solve the problems of the prior art described above, and one aspect of the present invention is a skeletal incongruity that can implement compensatory movement by rotating or moving the normalized dentition while reflecting the subject's skeletal incongruity in the normalized dentition. It relates to a method for realizing a normalized dentition reflecting the compensatory movement of the dentition according to the present invention.

A method for realizing a normalized dentition reflecting compensatory movement of the dentition according to skeletal mismatch according to an embodiment of the present invention is (A) a dentition generating unit generates a normalized dentition in a normal skeleton from a dentition arranged in the form of malocclusion of the subject. and (B) implementing compensatory movement by rotating or moving the normalized dentition while reflecting the skeletal incongruity of the subject in the normalized dentition by the compensatory movement implementing unit.

In addition, in the method for realizing a normalized dentition reflecting the compensatory movement of the dentition according to skeletal incongruity according to an embodiment of the present invention, in the normalized dentition, a maxillary crown array line, an upper apical crown array line, a mandibular crown array line, and A mandibular apical arrangement line is defined, an upper mandibular inclination center point is defined in the maxillary apical arrangement line, and a mandibular inclination center point is defined in the mandibular apical arrangement line, in step (B), (B-1) the maxillary inclination center point and rotating about the center point of the mandibular inclination.

In addition, in the method for realizing a normalized dentition reflecting compensatory movement of the dentition according to skeletal incongruity according to an embodiment of the present invention, the maxillary inclination center point is the first maxillary inclination center point defined in the posterior teeth in the maxillary apical arrangement line, and , The mandibular inclination center point is the first mandibular inclination center point defined in the posterior teeth in the mandibular apical arrangement line.

In addition, in the method for realizing a normalized dentition reflecting compensatory movement of the dentition according to skeletal incongruity according to an embodiment of the present invention, the maxillary inclination center point is the second maxillary inclination center point defined in the anterior portion of the maxillary apical arrangement line, and , The mandibular inclination center point is the second mandibular inclination center point defined in the anterior part in the mandibular apical arrangement line.

In addition, in the method for realizing a normalized dentition reflecting the compensatory movement of the dentition according to skeletal incongruity according to an embodiment of the present invention, in the normalized dentition, a maxillary crown array line, an upper apical crown array line, a mandibular crown array line, and A mandibular crown alignment line is defined, an upper crown change center point is defined on the maxillary crown alignment line, an upper crown change center point is defined on the maxillary crown alignment line, and a mandibular crown change center point is defined on the mandibular crown alignment line, The mandibular apical change center point is defined on the mandibular apical arrangement line, and in step (B), (B-2) fixing the maxillary crown change center point, the maxillary apical change center point, and the mandibular apical change center point, and moving the center point of crown change in an anteroposterior direction or a left-right direction.

In addition, in the method for implementing a normalized dentition reflecting the compensatory movement of the dentition according to the skeletal incongruity according to an embodiment of the present invention, the step (B), after the step (B-2), (B-3) The method may further include fixing the maxillary crown change center point, the mandibular crown change center point, and the mandibular crown change center point, and moving the maxillary crown change center point in a front-back direction or a left-right direction.

In addition, in the method for realizing a normalized dentition reflecting the compensatory movement of the dentition according to skeletal incongruity according to an embodiment of the present invention, the maxillary crown change center point is defined in the anterior portion of the maxillary crown arrangement line, and the maxillary apical change The center point is defined in the anterior part of the upper apical arrangement line, the mandibular crown change center point is defined in the anterior part in the mandibular crown arrangement line, and the mandibular apical change center point is defined in the anterior part in the mandibular apical arrangement line.

In addition, in the method for realizing a normalized dentition reflecting compensatory movement of the dentition according to an embodiment of the present invention, in the step (A), tooth data including the tooth root is extracted from the subject's CT data to be normal. The normalized dentition is created by registering it to the dentition in the skeleton.

In addition, in the method of implementing a normalized dentition reflecting compensatory movement of the dentition according to an embodiment of the present invention, when extracting the tooth data including the tooth root from the CT data of the subject, each of the tooth data Each tooth is arranged so that the volume of a bounding box surrounding the teeth is minimized, and a temporary tooth long axis connecting the center point of one coronal side surface and the center point of the other apical side surface in the bounding box is created.

In addition, in the method of realizing a normalized dentition reflecting compensatory movement of the dentition according to skeletal incongruity according to an embodiment of the present invention, an apical plane passing through an area spaced a predetermined distance from the occlusal plane is generated in the normalized dentition, The intersection point of the apical plane and the temporary tooth long axis is defined as the apical center point, an apical arrangement line passing through the apical center point is created, and the midpoint of the line connecting the buccal cusps of teeth 6 and 7 in the normalized row of teeth, 3 Create a crown array line passing through the cusp of teeth 4 and 5 and the midpoint of the incisal edge of teeth 1 and 2.

In addition, in the method for realizing a normalized dentition reflecting compensatory movement of the dentition due to skeletal incongruity according to an embodiment of the present invention, the intersection of the crown arrangement line and the line bisecting the mesial center of the coronal bounding box is defined as the center point of the crown. A line connecting the apical center point and the crown center point is defined as the tooth long axis.

In addition, in the method for realizing a normalized dentition reflecting compensatory movement of the dentition according to skeletal incongruity according to an embodiment of the present invention, the apical arrangement line for the upper jaw is defined as the apical arrangement line for the upper jaw, and the apical arrangement line for the lower jaw is defined. The crown array line is defined as the mandibular apical array line, the crown array line for the maxilla is defined as the maxillary crown array line, the crown array line for the mandible is defined as the mandibular crown array line, and the maxillary apical array line and the maxillary crown array line are defined. A maxillary dental alignment line is created by overlapping the crown alignment lines, a lower dental alignment line is created by overlapping the mandibular apical alignment line and the mandibular crown alignment line, and a dental alignment is achieved by combining the maxillary teeth alignment line and the mandibular dental alignment line. create a line

In addition, in the method of realizing a normalized dentition reflecting compensatory movement of the dentition according to skeletal incongruity according to an embodiment of the present invention, the normalized dentition is defined as the dentition alignment line.

In addition, in the method for realizing a normalized dentition reflecting compensatory movement of the dentition according to skeletal mismatch according to an embodiment of the present invention, when the maxillary dental array line and the mandibular tooth array line are combined, the maxillary crown array line and the The lower crown array line is arranged to have a horizontal overjet of a first predetermined distance and a vertical overbite of a second predetermined distance.

In addition, in the method of realizing a normalized dentition reflecting compensatory movement of the dentition according to skeletal incongruity according to an embodiment of the present invention, in the step (B), when the normalized dentition reflects the subject's skeletal incongruity, The three-dimensional position of the normalized dentition is recognized in the skeletal information of the subject.

Features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.

Prior to this, the terms or words used in this specification and claims should not be interpreted in a conventional and dictionary sense, and the inventor may appropriately define the concept of the term in order to explain his or her invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention based on the principle that there is.

According to the present invention, compensatory movement is realized by rotating or moving the normalized dentition while reflecting the subject's skeletal incongruity in the normalized dentition, so there is an advantage that it can be used for orthodontic treatment.

1 to 17 are views of a step (A) of generating a normalized dentition in a normal skeleton from a dentition arranged in a malocclusion form of a subject by a dentition creating unit; and
18 to 33 are diagrams illustrating a step (B) of implementing compensatory movement by rotating or moving the normalized dentition while reflecting the skeletal incongruity of the subject in the normalized dentition by the compensatory movement implementing unit.

Objects, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments taken in conjunction with the accompanying drawings. In adding reference numerals to components of each drawing in this specification, it should be noted that the same components have the same numbers as much as possible, even if they are displayed on different drawings. In addition, terms such as “first” and “second” are used to distinguish one component from another component, and the components are not limited by the terms. Hereinafter, in describing the present invention, detailed descriptions of related known technologies that may unnecessarily obscure the subject matter of the present invention will be omitted.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

A method for realizing a normalized dentition reflecting compensatory movement of the dentition according to skeletal mismatch according to an embodiment of the present invention is (A) a dentition generating unit generates a normalized dentition in a normal skeleton from a dentition arranged in the form of malocclusion of the subject. and (B) implementing compensatory movement by the compensatory movement implementer by rotating or moving the normalized dentition while reflecting the subject's skeletal incongruity in the normalized dentition.

Here, the subject may be a patient who has a malocclusion type dentition and needs orthodontic treatment, and the method of realizing a normalized dentition reflecting compensatory movement of the dentition according to skeletal incongruity according to an embodiment of the present invention is compensated by software. It can be used for orthodontic treatment by implementing gender transfer.

1 to 17 are diagrams for a step (A) of generating a normalized dentition in a normal skeleton from a dentition arranged in a malocclusion form of a subject by a dentition creating unit, and step (A) will be described with reference to this. Basically, step (A) may be performed by the dentition creating unit.

Overall, in step (A), a normalized dentition is created by extracting tooth data including a tooth root from the subject's CT data and matching it to the dentition data of a normal skeleton.

Specifically, the subject has teeth arranged in a malocclusion form. At this time, tooth data including the tooth root is extracted from the CT data showing the tooth root of the subject. Next, as shown in FIG. 1, a hexahedral bounding box enclosing each tooth is set from tooth data, and the teeth are arranged so that the volume of the bounding box is minimized. At this time, a temporary tooth long axis connecting the center point of one coronal side (top surface on the drawing) of the bounding box and the center point of the other surface (bottom side on the drawing) on the apical side is created. In this way, a normalized dentition is created by matching the tooth (see FIGS. 2 to 3 ) for which the temporary tooth long axis has been created with the dentition of the normal skeleton (see FIG. 4 ) (see FIG. 5 ). In this case, the teeth in the normal skeleton (see FIG. 4 ) may be teeth teeth created by software using clinical crowns.

A dental alignment line including an apical alignment line and a crown alignment line may be generated from the normalized dentition.

Specifically, as shown in FIG. 6 , it is possible to create an apical plane passing through an area separated by a predetermined distance from the occlusal plane in the normalized dentition. For example, the apical plane may be a virtual plane passing through an area 20 mm apart from the occlusal plane in the case of anterior teeth and 15 mm apart from the occlusal plane in the case of posterior teeth. However, the distance away from the occlusal plane is not necessarily limited to the above numerical values (20 mm, 15 mm) and may be changed based on statistical data. In addition, as shown in FIG. 7, the intersection of the apical plane and the temporary tooth long axis is defined as the apical center point. At this time, as shown in FIG. 8, a root-end alignment line passing through the center point of the root-end is created.

Meanwhile, as shown in FIGS. 9 to 10, the midpoint of the line passing through the buccal cusps of teeth 6 and 7, the cusp of teeth 3, 4 and 5, and the cutting of teeth 1 and 2 in the normalized dentition. Create a crown array line through the midpoint of the kite. Next, as shown in FIG. 11, the intersection of the crown arrangement line and the line bisecting the mesial center of the coronal bounding box is defined as the center point of the crown. A line connecting the above-mentioned apical center point and crown center point is defined as the long axis of the tooth (the long axis of the tooth is distinguished from the long axis of the provisional tooth). Meanwhile, the center point of the root end and the center point of the crown may be moved while being constrained to the apical arrangement line and the crown arrangement line, respectively. Accordingly, when the apical alignment line or crown alignment line is moved, the long axis of the tooth may be changed while moving the apical center point or crown center point.

This process is performed for the upper jaw and the lower jaw, respectively. At this time, the apical arrangement line for the upper jaw is defined as the upper apical arrangement line, and the apical arrangement line for the lower jaw is defined as the mandibular apical arrangement line. In addition, the crown alignment line for the upper jaw is defined as the maxillary crown alignment line, and the crown alignment line for the lower jaw is defined as the mandibular crown alignment line. At this time, the maxillary tooth alignment line is created by overlapping the maxillary tooth apical alignment line and the maxillary crown alignment line. In addition, the mandibular apical arrangement line and the mandibular crown arrangement line are overlapped to create the mandibular dentition arrangement line.

However, it is not necessary to create all of the maxillary apical array line, the mandibular apical array line, the maxillary crown array line, and the mandibular crown array line through the above-described process. For example, after creating the maxillary crown alignment line and the mandibular crown alignment line, as shown in FIGS. 12 and 13 , the maxillary apical alignment line and the long axis of the maxillary tooth can be created from the maxillary crown alignment line using a conventional drawing method. 14 and 15, the mandibular apical arrangement line and the long axis of the mandibular teeth may be created from the mandibular crown arrangement line using a conventional drawing method.

Then, as shown in FIGS. 16 and 17 , an upper dental row array line and a lower dental row array line are combined to create a dental row array line. In this way, when the upper and lower dental tooth array lines are combined, the upper and lower crown array lines form a horizontal overjet (refer to FIG. 17) of a first predetermined distance and a vertical overbite (refer to FIG. 17) of a second predetermined distance. , see FIG. 16). Here, the first predetermined distance and the second predetermined distance may be, for example, about 2 mm.

The normalized dentition may be defined as the dentition array line generated through the above process.

18 to 33 are diagrams showing a step (B) of implementing compensatory movement by rotating or moving the normalized dentition while reflecting the skeletal incongruity of the subject in the normalized dentition by the compensatory movement implementing unit, referring to this ( B) Describe the steps. Basically, step (B) may be performed by a compensatory motion implementation unit.

Here, when the subject's skeletal incongruity is reflected in the normalized dentition, the 3-dimensional position of the normalized dentition can be recognized in the skeletal information of the subject. For example, the subject's skeletal information may be a CT image (refer to the left view of FIG. 18) or a frontal/lateral cephalometrics (refer to the right view of FIG. 18). Specifically, when the skeletal information of the subject is a CT image, the CT image may be removed after matching the normalized dentition to the CT image to recognize the 3D position of the normalized dentition. In addition, when the subject's skeletal information is a front/lateral head radiograph, the three-dimensional position of the normalized dentition can be recognized by the measured values on the drawing of the front/side head radiograph.

When reflecting the subject's skeletal incongruity to the normalized dentition, the dentition alignment line created in step (A) can be used.

In step (A), the maxillary crown array line, the maxillary apical array line, the mandibular crown array line, and the mandibular apical array line were defined. Additionally, in order to implement compensatory movement, the maxillary tilt center point (first and second maxillary tilt center points), the mandibular tilt center point (the first and second mandibular tilt center points), the maxillary crown change center point, the maxillary crown change center point, the mandibular crown change center point, The mandibular apical change center point can be defined.

Here, the maxillary inclination center point may be defined on the maxillary apical arrangement line, and the mandibular inclination center point may be defined on the mandibular apical arrangement line. Specifically, the maxillary inclination center point may include a first maxillary inclination center point defined in the posterior part of the maxillary apical arrangement line (see FIG. 19) and a second maxillary inclination center point defined in the anterior part in the maxillary apical arrangement line (see FIG. 20). can For example, the first maxillary tilt center point is preferably defined between teeth 4 and 5 on the maxillary apical alignment line (see FIG. 19), and the second maxillary tilt center point is defined between teeth 1 and 1 on the maxillary apical alignment line. It is preferably defined between the teeth (see Fig. 20). In addition, the mandibular inclination center point may include a first mandibular inclination center point defined in the posterior part of the mandibular apical arrangement line (see FIG. 19) and a second mandibular inclination center point defined in the anterior part in the mandibular apical arrangement line (see FIG. 20). there is. For example, the first mandibular inclination center point is preferably defined between teeth 4 and 5 in the mandibular apical arrangement line (see FIG. 19), and the second mandibular inclination center point is defined in the mandibular apical arrangement line at numbers 1 and 1. It is preferably defined between the teeth (see Fig. 20).

Here, as shown in FIGS. 21 and 22, when the normalized dentition is rotated around the first upper and lower inclined central points, the occlusal plane is inclined and the relative movement between the upper and lower dentition in the front and rear direction this is possible For example, when the normalized teeth are rotated clockwise around the first maxillary tilt center point and the first mandibular tilt center point (see FIGS. 21 and 22), the lower jaw teeth may be moved forward with respect to the maxillary teeth ( see Figure 23). Through this, it is possible to implement compensatory movement in which the class 2 malocclusion relationship is alleviated. Conversely, if the normalized dentition is rotated counterclockwise around the first maxillary inclination center point and the first mandibular inclination center point, the mandibular dentition can be moved backward with respect to the maxillary dentition. Through this, it is possible to implement a compensatory movement in which a class 3 malocclusion relationship is alleviated.

On the other hand, as shown in FIGS. 24 to 25, when the normalized dentition is rotated around the second upper and lower inclined central points, the occlusal plane is inclined and the relative movement between the upper and lower dentitions in the left and right directions this is possible For example, when the normalized teeth are rotated clockwise around the second maxillary tilt center point and the second mandibular tilt center point (see FIGS. 24 to 25), the mandibular teeth may be moved to the right with respect to the maxillary teeth. . Through this, it is possible to implement compensatory movement in which the asymmetric malocclusion relationship is alleviated.

In terms of software, a method of rotating the upper and lower jaw teeth after fixing the first and second upper jaw center points and the first and second lower jaw tilt center points can be used.

In addition, as shown in FIGS. 26 and 27, the maxillary crown change center point is defined on the maxillary crown array line, the maxillary apical change center point is defined on the maxillary apical crown array line, and the mandibular crown change center point is defined on the mandibular crown array line. and the mandibular apical change center point can be defined on the mandibular apical array line. Specifically, the maxillary crown change center point is defined in the anterior portion of the maxillary crown alignment line, the maxillary apical change center point is defined in the anterior portion of the maxillary crown alignment line, the mandibular crown change center point is defined in the anterior portion of the mandibular crown alignment line, and the mandibular apical end. The center of change can be defined in the anterior part of the mandibular apical arrangement line. For example, the maxillary crown change center point, the maxillary crown change center point, the mandibular crown change center point, and the mandibular crown change center point are number 1 and 1 respectively in the maxillary crown array line, the maxillary apical array line, the mandibular crown array line, and the mandibular apical array line. It is preferably defined between teeth 1 (see Fig. 26).

Here, as shown in FIGS. 28 to 29, when the maxillary crown change center point, the maxillary apical change center point, and the mandibular apical change center point are fixed, and the mandibular crown change center point is moved in the front-back direction, the mandibular crown arrangement line is drawn in the front-back direction. As it is moved to, the inclination of the long axis of the teeth changes to a state in which the upper and lower occlusion relationship is normalized. For example, when the maxillary crown change center point, the maxillary apical change center point, and the mandibular crown change center point are fixed and the mandibular crown change center point is moved forward (see FIGS. 28 to 29), the mandibular crown arrangement line is moved forward , the inclination of the long axis of the tooth changes. Through this, it is possible to implement compensatory movement in which the class 2 malocclusion relationship is alleviated. Conversely, when the maxillary crown change center point, the maxillary apical change center point, and the mandibular apical change center point are fixed and the mandibular crown change center point is moved backward, the mandibular crown arrangement line is moved backward, and the inclination of the tooth long axis changes. Through this, it is possible to implement a compensatory movement in which a class 3 malocclusion relationship is alleviated.

In this way, the reason for fixing the maxillary crown change center point, the maxillary apical change center point, and the mandibular apical change center point, and moving the mandibular crown change center point in the front-back direction is to minimize the range of change of maxillary teeth that are generally exposed to the outside and to minimize exposure to the outside. This is to change the lower jaw teeth.

In terms of software, a method of unfixing the center point of the mandibular crown while fixing the center point of the maxillary crown change, the center point of the maxillary apical change, and the center point of the mandibular apical change can be used.

As described above, after fixing the maxillary crown change center point, the maxillary apical change center point, and the mandibular apical change center point, and moving the mandibular crown change center point in the front-back direction, it may be necessary to further adjust the maxillary tooth long axis. In this case, as shown in FIGS. 29 to 30 , the maxillary crown change center point, the mandibular crown change center point, and the mandibular crown change center point may be fixed, and the maxillary crown change center point may be moved forward and backward. When the maxillary crown change center point is moved in the anteroposterior direction, the inclination of the long axis of the maxillary teeth changes as the maxillary crown alignment line is moved in the anteroposterior direction. For example, if the maxillary crown change center point, the mandibular crown change center point, and the mandibular crown change center point are fixed and the maxillary crown change center point is moved backward (see FIGS. 29 to 30), the maxillary crown arrangement line is moved backward , the inclination of the long axis of the tooth changes. Through this, it is possible to implement compensatory movement in which the class 2 malocclusion relationship is alleviated.

In terms of software, it is possible to use a method of moving the center point of maxillary crown change after unfixing it.

Meanwhile, as shown in FIGS. 31 and 32 , when the maxillary crown change center point, the maxillary apical change center point, and the mandibular apical change center point are fixed, and the mandibular crown change center point is moved in the left and right directions, the mandibular crown alignment line is shifted in the left and right directions. As it is moved to, the inclination of the long axis of the teeth changes to a state in which the upper and lower occlusion relationship is normalized. For example, when the maxillary crown change center point, the maxillary apical change center point, and the mandibular apical change center point are fixed and the mandibular crown change center point is moved to the left (see FIGS. 31 and 32), the mandibular crown alignment line is moved to the left , the inclination of the long axis of the tooth changes. Through this, it is possible to implement compensatory movement in which the asymmetric malocclusion relationship is alleviated.

In this way, the reason for fixing the maxillary crown change center point, the maxillary apical change center point, and the mandibular apical change center point and moving the mandibular crown change center point in the left and right directions is to minimize the range of change of maxillary teeth that are generally exposed to the outside and to reduce exposure to the outside. This is to change the lower jaw teeth.

In terms of software, a method of unfixing the center point of the mandibular crown while fixing the center point of the maxillary crown change, the center point of the maxillary apical change, and the center point of the mandibular apical change can be used.

As described above, after fixing the maxillary crown change center point, the maxillary apical change center point, and the mandibular apical change center point, and moving the mandibular crown change center point in the left and right directions, it may be necessary to further adjust the long axis of the maxilla. In this case, as shown in FIGS. 32 and 33 , the maxillary crown change center point, the mandibular crown change center point, and the mandibular crown change center point may be fixed, and the maxillary crown change center point may be moved in the left and right directions. When the maxillary crown change center point is moved in the left and right directions, the inclination of the long axis of the maxillary teeth changes as the maxillary crown alignment line is moved in the left and right directions. For example, when the maxillary crown change center point, the mandibular crown change center point, and the mandibular crown change center point are fixed and the maxillary crown change center point is moved to the right (see FIGS. 32 and 33), the maxillary crown alignment line is moved to the right , the inclination of the long axis of the tooth changes. Through this, it is possible to implement compensatory movement in which the asymmetric malocclusion relationship is alleviated.

In terms of software, it is possible to use a method of moving the center point of maxillary crown change after unfixing it.

In summary, the methods for realizing the compensatory movement of the class 2 malocclusion relationship or the class 3 malocclusion relationship are 1) a method of rotating the first maxillary tilt center point and the first mandibular tilt center point (see FIGS. 21 and 22) , 2) a method of moving the center point of crown change in the lower jaw forward and backward (see FIGS. 28 to 29), and 3) a method of moving the center point of crown change in the upper jaw in an anteroposterior direction (see FIGS. 29 to 30). The three methods can be performed in combination. In this case, 1) a method of rotating the center point of the first maxillary inclination and the center point of the first mandibular inclination -> 2) a method of moving the center point of mandibular crown change forward and backward -> 3) It can be performed in the order of moving the center point of maxillary crown change forward and backward.

In addition, methods for realizing compensatory movement in an asymmetrical relationship are: 1) a method of rotating the center point of the second upper jaw and the center point of the second lower jaw (see FIGS. 24 and 25); 31 and 32), and 3) moving the center point of maxillary crown change in the left and right directions (see FIGS. 32 and 33). The three methods can be performed in combination. In this case, 1) a method of rotating the center point of the second upper jaw and the center point of the second mandibular tilt -> 2) a method of moving the central point of change in the mandibular crown in the left and right directions -> 3) It can be performed in the order of moving the center point of maxillary crown change in the left and right directions.

The method for realizing a normalized dentition reflecting the compensatory movement of the dentition according to the skeletal incongruity according to an embodiment of the present invention implements the compensatory movement by rotating or moving the normalized dentition while reflecting the skeletal incongruity of the subject, thereby creating individualized brackets. It can be used to make an individualized bracket base (adjust the inclination of the bracket base, etc.), and it can reproduce changes in the dentition during the orthodontic process.

Although the present invention has been described in detail through specific examples, this is for explaining the present invention in detail, the present invention is not limited thereto, and within the technical spirit of the present invention, by those skilled in the art It is clear that modifications and improvements are possible.

All simple modifications or changes of the present invention fall within the scope of the present invention, and the specific protection scope of the present invention will be clarified by the appended claims.

Claims (15)

In the method of realizing a normalized dentition reflecting the compensatory movement of the dentition due to skeletal incongruity, which implements the compensatory movement of the dentition in software,
(A) generating a normalized dentition in a normal skeleton from a dentition arranged in a malocclusion form by a dentition creating unit; and
(B) implementing compensatory movement by rotating or moving the normalized dentition while reflecting the subject's skeletal incongruity in the normalized dentition, by a compensatory movement implementing unit;
including,
In the normalized dentition, a maxillary crown array line, an upper apical crown array line, a mandibular crown array line, and a mandibular crown array line are defined,
The maxillary inclination center point is defined on the maxillary apical arrangement line, and the mandibular inclination center point is defined in the mandibular apical arrangement line,
In step (B),
(B-1) rotating the center point of the upper jaw and the center point of the lower jaw inclination;
A method of realizing a normalized dentition reflecting compensatory movement of the dentition due to skeletal incongruity, including.
delete The method of claim 1,
The maxillary inclination center point is a first maxillary inclination center point defined in the posterior part in the maxillary apical arrangement line,
The mandibular inclination center point is a first mandibular inclination center point defined in the posterior teeth in the mandibular apical arrangement line.
The method of claim 1,
The maxillary inclination center point is a second maxillary inclination center point defined in the anterior part in the maxillary apical arrangement line,
The mandibular inclination center point is a second mandibular inclination center point defined in the anterior portion of the mandibular apical arrangement line, a method of implementing a normalized dentition reflecting compensatory movement of the dentition according to skeletal incongruity.
In the method of realizing a normalized dentition reflecting the compensatory movement of the dentition due to skeletal incongruity, which implements the compensatory movement of the dentition in software,
(A) generating a normalized dentition in a normal skeleton from a dentition arranged in a malocclusion form by a dentition creating unit; and
(B) implementing compensatory movement by rotating or moving the normalized dentition while reflecting the subject's skeletal incongruity in the normalized dentition, by a compensatory movement implementing unit;
including,
In the normalized dentition, a maxillary crown array line, an upper apical crown array line, a mandibular crown array line, and a mandibular crown array line are defined,
The maxillary crown change center point is defined on the maxillary crown arrangement line, the maxillary apical end change center point is defined on the maxillary apical end arrangement line, the mandibular crown change center point is defined on the mandibular crown arrangement line, and the mandibular apical end is defined on the mandibular apical end arrangement line. The center of change is defined,
In step (B),
(B-2) fixing the maxillary crown change center point, the maxillary apical change center point, and the mandibular apical change center point, and moving the mandibular crown change center point in the front-back direction or the left-right direction;
A method of realizing a normalized dentition reflecting compensatory movement of the dentition due to skeletal incongruity, including.
The method of claim 5,
In step (B),
After step (B-2),
(B-3) fixing the maxillary crown change center point, the mandibular crown change center point, and the mandibular crown change center point, and moving the maxillary crown change center point in the front-back direction or the left-right direction;
A method of implementing a normalized dentition reflecting the compensatory movement of the dentition due to skeletal incongruity further comprising.
The method of claim 5,
The maxillary crown change center point is defined in the anterior portion of the maxillary crown arrangement line,
The maxillary apical change center point is defined in the anterior part of the maxillary apical arrangement line,
The mandibular crown change center point is defined in the anterior portion of the mandibular crown arrangement line,
The mandibular apical change center point is a method of implementing a normalized dentition reflecting compensatory movement of the dentition according to skeletal incongruity defined in the anterior portion in the mandibular apical arrangement line.
According to claim 1 or claim 5,
In step (A),
A method of implementing a normalized dentition reflecting compensatory movement of the dentition due to skeletal mismatch by extracting tooth data including tooth roots from CT data of a subject and matching them to a dentition in a normal skeleton to generate the normalized dentition.
The method of claim 8,
When extracting the tooth data including the tooth root from the subject's CT data,
In the tooth data, each tooth is arranged so that the volume of a bounding box surrounding each tooth is minimized,
A method for realizing a normalized dentition reflecting compensatory movement of the dentition due to skeletal incongruity to create a temporary tooth long axis connecting the center point of one surface on the coronal side and the center point of the other surface on the apical side in the bounding box.
The method of claim 9,
In the normalized row of teeth, an apical plane passing through a region spaced apart from the occlusion plane by a predetermined distance is created, an intersection point between the apical plane and the temporary tooth long axis is defined as an apical center point, and an apical alignment line passing through the apical center point is generated,
Skeleton for generating a crown arrangement line passing through the midpoint of the line connecting the buccal cusp crowns of teeth 6 and 7, the cusp vertex of teeth 3,4 and 5, and the midpoint of the incisal edge of teeth 1 and 2 in the normalized dentition. A method for realizing a normalized dentition reflecting the compensatory movement of the dentition due to disharmony.
The method of claim 10,
An intersection of the crown array line and a line bisecting the mesiocentric center of the crown-side bounding box is defined as the center point of the crown,
A method of realizing a normalized dentition reflecting compensatory movement of the dentition due to skeletal incongruity defining a tooth long axis as a line connecting the apical center point and the crown center point.
The method of claim 10,
The apical arrangement line for the upper jaw is defined as an upper apical arrangement line, and the apical arrangement line for the lower jaw is defined as a mandibular apical arrangement line,
The crown array line for the upper jaw is defined as a maxillary crown array line, and the crown array line for the lower jaw is defined as a mandibular crown array line,
The maxillary tooth alignment line is created by overlapping the maxillary tooth apical alignment line and the maxillary crown alignment line;
The mandibular tooth alignment line is created by overlapping the mandibular tooth apical arrangement line and the mandibular crown arrangement line,
A method of realizing a normalized dentition reflecting compensatory movement of the dentition according to skeletal incongruity in which the upper and lower dentition array lines are combined to generate a dentition array line.
The method of claim 12,
The normalized dentition is a method of implementing a normalized dentition reflecting the compensatory movement of the dentition according to the skeletal incongruity defined by the dentition array line.
The method of claim 12,
When combining the upper jaw alignment line and the lower jaw alignment line,
The maxillary crown array line and the mandibular crown array line are arranged to have a horizontal overjet of a first predetermined distance and a vertical overbite of a second predetermined distance. How to implement fierceness.
According to claim 1 or claim 5,
In step (B),
When reflecting the subject's skeletal incongruity in the normalized dentition,
A method of realizing a normalized dentition reflecting compensatory movement of the dentition according to skeletal incongruity in which the three-dimensional position of the normalized dentition is recognized in the skeletal information of the subject.

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