KR101590140B1 - Three-dimensional dental image displaying method and three-dimensional dental image displaying method apparatus for observing occlusal tooth on multi direction, and a computer-readable storage medium storing computer program for three-dimensional dental image displaying method - Google Patents

Abstract

The present invention relates to a display method of a three-dimensional tooth image for checking dental occlusion in the multi-direction, wherein the display method comprises: a step of producing an inner and an outer image of teeth at left side and an inner and an outer image of teeth at right side based on a cutting plane which separates left and right of maxillary and submaxillary teeth in the three-dimensional tooth image; and a step of simultaneously displaying the produced inner and the produced outer image of teeth at left side and the produced inner and the produced outer image of teeth at right in a screen.

Description

TECHNICAL FIELD [0001] The present invention relates to a three-dimensional tooth image displaying method and apparatus for verifying tooth occlusion in multiple directions, and a computer readable storage medium storing a computer program for a three-dimensional tooth image displaying method. DISPLAYING METHOD APPARATUS FOR OBSERVING OCCLUSAL TOOTH ON MULTI DIRECTION, AND A COMPUTER READABLE STORAGE MEDIUM STORING COMPUTER PROGRAM FOR THREE-DIMENSIONAL DENTAL IMAGE DISPLAYING METHOD}

The present invention relates to a three-dimensional tooth image display method, apparatus, and computer-readable storage medium for confirming tooth occlusion.

In general, malocclusion is an abnormal state in which teeth are not correct and upper and lower tooth occlusion is abnormal. Such malocclusion causes not only functional problems such as writing and pronunciation problems but also aesthetic problems on the face, And the like.

Therefore, tooth orthodontic treatment should be performed in order to make such malocclusion into normal occlusion.

Accurate tooth image acquisition is required for diagnosis, treatment planning, and device fabrication for orthodontic treatment. The most accurate representation of facial bones and teeth is usually CT images. At this time, when the orthodontic appliance or the prosthesis is present in the tooth, the CT image of the tooth part includes a phase (noise) such as a residual image or a virtual image, and the shape of the tooth is liable to be distorted due to this phase.

The related art is disclosed in Korean Utility Model Publication No. 10-2010-0094160 (Aug. 26, 2010).

Typical tooth image display devices show only the outer surface of the tooth and can not show the inner surface. That is, when the image of the tooth is simply rotated, the inner side of the tooth located at one side is covered by the tooth positioned at the opposite side, and thus the user can not confirm it. Thus, the user can not confirm the inner surface of the tooth, and the position and state of the occlusion can not be confirmed accurately. Therefore, the user can not accurately form the correction plan of the teeth, and the correction of the teeth becomes inaccurate.

In view of the above, it is an object of the present invention to provide a method and apparatus for simultaneously displaying an image of an outer side surface and an inner side surface of a tooth on one screen and accurately displaying the position of the tooth occlusion, Dimensional tooth image display method, apparatus, and computer readable storage medium.

Further, it is also possible to automatically set the cutting plane, generate an image of the outer and inner sides of the tooth with reference to the cut plane, rotate the generated image by a preset direction, display the same on a single screen, Dimensional teeth image display method, apparatus, and computer readable storage medium that can accurately grasp the occlusion state of a tooth by a user.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. It will also be readily apparent that the objects and advantages of the invention may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.

In order to solve the above-described problems, a three-dimensional tooth image display method for confirming tooth occlusion in multiple directions, which is one embodiment of the present invention, is based on a cut surface for distinguishing right and left maxillary and mandibular teeth from a three- A step of generating an inner / outer image of the teeth on the left side, an inner / outer side image of teeth present on the right side, in which the upper teeth and the lower teeth are in an occluded state, And displaying the inner / outer images on the right side on one screen at the same time.

The three-dimensional tooth image display method further includes a step of extracting an occlusion position of the upper teeth and the lower teeth and a step of displaying the extracted occlusion position on an inner / outer image on the left side and an inner / outer image on the right side can do.

Wherein extracting the occlusion position of the maxillary teeth and the mandibular teeth comprises extracting at least one first surface point located on the surface from the image of the maxillary teeth, Extracting a second surface point and extracting the first surface point and the second surface point as an occlusion position when the distance between the first surface point and the second surface point is less than a predetermined distance can do.

Wherein the predetermined distance is calculated by the following formula (1).

The step of generating an image includes the steps of generating an inner / outer image of a tooth existing on the left side and a tooth image of a tooth existing on the right side based on the predetermined cut surface when the user inputs an image display signal for displaying the cut image through the user input unit And generating an inner / outer image of the teeth.

The cut surface may be a surface passing through the center between the upper teeth and the front teeth of the mandibular teeth or a face set by a cut surface setting signal input by the user through the user input unit.

A method of displaying a three-dimensional tooth image, the method comprising: setting tooth standard data after displaying; acquiring rotational axis information and center point information for each tooth in the tooth object data; Changing the rotation axis angle and automatically aligning the rotation axis angle of the second tooth object using the changed rotation axis angle and the tooth standard data.

Wherein the step of automatically aligning the rotation axis angle and the rotation axis angle of the second tooth object using the tooth standard data is performed such that, when the first tooth object is transposed, the rotation axis angle of the second tooth object is expressed by the following equation (2) As shown in FIG.

The step of automatically aligning the rotation axis angle of the second tooth object using the changed rotation axis angle and the tooth standard data may further include a step of automatically aligning the rotation axis angle of the second tooth object with the second tooth object when the first tooth object is not a pre- The rotational axis angle of the object may be automatically aligned according to the following equation (3).

A three-dimensional tooth image display apparatus for confirming tooth occlusion in multiple directions according to another embodiment of the present invention includes a display unit for displaying data, a display unit for displaying data, and a display unit for displaying left and right sides of the maxilla and mandible teeth in the three- The inside / outside image of the teeth existing on the left side and the inside / outside image of the teeth existing on the right side on the basis of the left / inside image and the inside / outside image of the left side, And displaying the same on the display unit.

The control unit may extract an occlusion position of the upper teeth and the mandibular teeth and include the extracted occlusion position in the left / right outer side image and the right side inner / outer side image and display the same on the display unit.

The control unit extracts at least one first surface point located on the surface from the image of the upper teeth, extracts at least one second surface point located on the surface from the image of the lower teeth, When the distance between the two surface points is less than the set distance, the first surface point and the second surface point can be extracted as the occlusion position.

The set distance can be calculated by the following equation (1).

When the user inputs an image display signal for displaying the cut image through the user input unit, the control unit displays the inside / outside image of the teeth on the left side and the inside / outside image of the teeth on the right side based on the predetermined cut surface, Thereby generating a lateral image.

The control unit obtains the rotation axis information and the center point information for each tooth from the set tooth object data, changes the rotation axis angle with respect to the first tooth object in the tooth object data, and uses the changed rotation axis angle and the tooth standard data, The angle of the rotation axis of the tooth object can be automatically aligned.

When the first tooth object is inverted, the control unit can automatically align the rotation axis angle of the second tooth object according to the following equation (2).

When the first tooth object is not transposed but the rotation axis angle is fixed with respect to the transposition, the control unit can automatically align the rotation axis angle of the second tooth object according to the following equation (3).

When the user inputs a detail view signal for viewing the occlusion position in detail through the user input unit, the control unit can process the remaining teeth image parts except for the occlusion position part in a translucent manner and display them on the display unit.

The control unit displays only the image of the specific tooth including the occlusion position on the display unit when the image of the specific tooth is selected through the user input unit. When the tooth rotation signal is inputted through the user input unit, The image of the specific tooth can be rotated and displayed on the display unit.

A computer-readable storage medium according to another embodiment of the present invention may have a program recorded thereon for executing the method according to any one of claims 1 to 9.

According to an embodiment of the present invention having the above-described structure, the user can easily identify the outer / inner side images of the teeth at the same time, as well as accurately grasp the occlusion position of the tooth outer side / inner side.

1 is a view for explaining a three-dimensional tooth image display device for confirming tooth occlusion in multiple directions, which is an embodiment of the present invention.
FIGS. 2A to 2F are views for explaining a tooth image displaying method of a three-dimensional tooth image displaying apparatus for confirming tooth occlusion in multiple directions, which is one embodiment of the present invention.
FIG. 3 is a flowchart for explaining a three-dimensional tooth image display method for confirming tooth occlusion in multiple directions, which is one embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments of the present invention can be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described below. The embodiments are provided to explain the present invention to a person having ordinary skill in the art to which the present invention belongs.

1 is a view for explaining a three-dimensional tooth image display device for confirming tooth occlusion in multiple directions, which is an embodiment of the present invention.

Referring to FIG. 1, a three-dimensional tooth image display apparatus 100 includes a communication unit 110, a three-dimensional scanner 120, a user input unit 130, a display unit 140, and a control unit 150.

The communication unit 110 may transmit or receive data in a wired or wireless manner. For example, the control unit 150 can receive the three-dimensional tooth image from the external device through the communication unit 110.

The three-dimensional scanner 120 can acquire and acquire a three-dimensional tooth image for a tooth. The three-dimensional scanner 120 refers to a device used to extract coordinate values of an outline of an object to obtain data in a NURBS, polygon, or patch format. The three-dimensional scanner 120 apparatus is not limited to a specific apparatus and may include various types of apparatuses capable of acquiring three-dimensional images.

The user input unit 130 generates input data for controlling the operation of the three-dimensional tooth image display apparatus 100. For example, the user can input an image display signal, a cut plane setting signal, or the like for displaying a tooth image through the user input unit 130. The user input unit 130 may be configured as various types of devices through which a user can input a signal, such as a key pad dome switch, a touch pad (static pressure / static electricity), a jog wheel, have.

The display unit 140 may display various data information necessary to use the three-dimensional tooth image display apparatus 100. [ The display unit 140 may include a touch sensor and may be configured to convert a change in a pressure applied to a specific part or a capacitance generated to an electrical input signal. The touch sensor can be configured to detect not only the position and area to be touched but also the pressure branch at the time of touch.

The display unit 140 may be a liquid crystal display (LCD), a thin film transistor-liquid crystal display (TFT LCD), an organic light-emitting diode (OLED), a flexible display display, and a 3D display.

The control unit 150 controls the upper and lower teeth of the upper and lower teeth based on the cutting plane that divides the upper and lower teeth in the three-dimensional tooth image obtained through the communication unit 110 or the three-dimensional scanner 120, An inner / outer image of the teeth on the left side, and an inner / outer image of the teeth on the right side. Here, the cut surface may be a surface passing through the center between the upper teeth and the front teeth of the mandibular teeth, a face set by a user to input a cut surface setting signal input through the user input unit 130, or a face set by a manufacturer. As such, the cut surface can be set by various criteria.

The control unit 150 can simultaneously display the generated left / right outer image and the right inner / outer image on the display unit 140 on one screen.

The control unit 150 can extract the occlusion position of the maxillary teeth and the mandibular teeth. The control unit 150 may display the extracted occlusion position on the display unit 140 by including the extracted inside / outside image on the left side and the inside / outside side image on the right side. For example, the control unit 150 may display a shape such as a circle, a star, a triangle, and the like on the occlusion position, digitize the occlusion position, and display the occlusion position on the display unit 140. For example, the control unit 150 can display on the display unit 140 the position of the occlusion position which is several millimeters away from the center line of the teeth.

Specifically, the control unit 150 extracts at least one first surface point located on the surface from the image of the maxillary teeth and extracts at least one first surface point located on the surface from the image of the mandibular teeth Points can be extracted. For example, the number of first surface points and second surface points may be a number set by the user such as 10, 30, 100, and so on. The controller 150 may calculate the distance between the first surface points and the second surface points. For example, the control unit 150 may extract first surface points and second surface points from a three-dimensional image corresponding to the A maxillary teeth and the A mandibular teeth ('tooth pair'). The controller 150 may calculate the distance between the extracted first surface point and the second surface point. The controller 150 may extract the first surface point and the second surface point as occlusion positions when the calculated distance between the first surface point and the second surface points is less than a predetermined distance. The set distance can be preset by a user or the like. For example, when the set distance is 1 mm, the controller 150 may extract the first surface point and the second surface point as occlusion positions when the distance between the first surface point and the second surface points is 1 mm or less.

As another example, the control unit 150 can set the value calculated by the following equation (1) to a set distance.

[Equation 1]

X = S / N * M

X: Set distance

S: the sum of the shortest distances between each tooth pair

N: number of tooth pairs

M: weight of 1 or less

For example, if the sum S for the shortest distances between each pair of teeth is 10 mm, the number of tooth pairs N is 10, and the weight is 0.1, then the set distance X is 0.1 mm will be. The control unit 150 can calculate the set distance more precisely by calculating the distance set by Equation (1) above.

When the user inputs a detailed view signal for viewing the occlusion position in detail through the user input unit 130, the control unit 150 may display the remaining tooth image parts except the occlusion position part in a translucent manner on the display unit 140 . Thus, the user can more clearly confirm the shape of the occlusion position portion.

When an image of a specific tooth is selected through the user input unit 130, the control unit 150 can display only the image of the specific tooth including the occlusion position on the display unit 140. [ When the tooth rotation signal is input through the user input unit 130, the control unit 150 rotates the image of the specific tooth according to the tooth rotation signal and displays the rotated image on the display unit 140.

When the user inputs an image display signal for displaying the cut image through the user input unit 130, the control unit 150 displays the inside / outside image of the teeth on the left side on the basis of the predetermined cut surface, The inner / outer image of the existing teeth can be generated. The control unit 150 can simultaneously display the generated left / right outer image and the right inner / outer image on the display unit 140 on one screen. In this manner, when the user inputs one video display signal, the control unit 150 can automatically generate the left / right outer video and the right inner / outer video, and display the same on the display unit 140 at the same time. Accordingly, the user can confirm the inside / outside image of the left / right teeth with one image display signal input.

The control unit 150 can obtain the rotation axis information and the center point information for each tooth from the set tooth object data. The control unit 150 can change the angle of the rotation axis with respect to the first tooth object in the tooth-specific object data. The control unit 150 may automatically align the rotation axis angle of the second tooth object using the changed rotation axis angle and the tooth standard data. This process can be executed after the control unit 150 displays the left / right outer image and the right inner / outer image on the display unit 140 on one screen at the same time. For example, a common adult may have seven teeth on both sides of the anterior teeth (front teeth).

Table 1 below shows an example of tooth standard data.

Rotation axis angle of tooth standard data 7 6 5 4 3 2 One One 2 3 4 5 6 7 Maxilla 0 0 3 3 5 7 10 10 7 5 3 3 0 0 Mandatory 0 One 2 3 4 5 6 6 5 4 3 2 One 0

Here, the numbers represent respective teeth, 1 represents transposition, and 7 represents molar teeth. As illustrated in Table 1, the angles of the mandibular and mandibular teeth are stored in the memory of the orthodontic simulation apparatus according to the present invention as teeth standard data in the claims. At this time, a virtual line connecting the central point of both ends of both root ends as a center point, the center point as an axis, and the center point of the crown can be defined as a rotation axis.

In the present invention, the angle of the rotation axis means the angle between the rotation axis and the vertical plane in the arch. Here, + angle means that the tooth protrudes forward, and - angle means that the tooth is retracted into the mouth.

The control unit 150 automatically aligns the rotation axis angle of the second tooth object according to the following equation (2) if the first tooth object is transposed.

     &Quot; (2) "

Y = B / A * C

Y: rotation axis angle of the second object that is automatically aligned

A: rotation axis angle of the first object set

B: rotation axis angle of the changed first object

C: rotation axis angle of the set second object

Here are some examples.

Table 1 is the rotation axis angle of the primary aligned teeth (tooth object).

Here, if the angle of the first tooth, which is the transposition of the maxilla, is changed to 8 degrees, the rotation axis of the remaining teeth of the maxilla is changed according to Equation (2). The angles of rotation of the changed teeth are changed to the following [Table 2].

According to the change in frontal angle, the rotational axis angle 7 6 5 4 3 2 One One 2 3 4 5 6 7 Maxilla 0 0 2.4 2.4 4 5.6 8 8 5.6 4.0 2.4 2.4 0 0 Mandatory 0 One 2 3 4 5 6 6 5 4 3 2 One 0

If there is a change in the angle of the rotation axis with respect to teeth other than transposition, there are two methods. In the first case, transposition is the case of moving, and the second case is the case of fixing the transposition.

In the first case, for example, when the upper 5th tooth is changed from 3 degrees to 4 degrees in [Table 1], the following table is changed. In this case, it is changed according to the following equation (2).

The angle of the rotation axis changed in accordance with the equation (2) 7 6 5 4 3 2 One One 2 3 4 5 6 7 Maxilla 0 0 4 4 6.5 9.3 13.3 13.3 9.3 6.5 4 4 0 0 Mandatory 0 One 2 3 4 5 6 6 5 4 3 2 One 0

In the second case, when the second object tooth is located between the transpose and the first object tooth, the rotation axis is changed according to the following equation (3).

     &Quot; (3) "

Y = D- (D-C) * (D-B) / (D-A)

Y: Angle of rotation axis of the automatically aligned second tooth object

A: rotation axis angle of the first object set

B: rotation axis angle of the changed first object

C: rotation axis angle of the set second object

D: Angle of rotation axis of the preset

The three-dimensional tooth image display device can automatically generate the outside / inside side images of the teeth with reference to the cut surface and simultaneously display the generated images on the display unit so that the user can easily check the outside / inside conditions of the teeth In addition, it is possible to accurately grasp the occlusion position of the outside / inside of the teeth.

In addition, the three-dimensional tooth image display device automatically sets the cut surface, automatically generates images of the outer and inner surfaces of the teeth based on the cut surface, rotates the generated image by a predetermined direction, Dimensional teeth image display method and apparatus, and a computer readable storage medium, which are capable of accurately displaying the position of a tooth occlusion and accurately grasping the state of occlusion of a tooth by displaying the same at the same time.

FIGS. 2A to 2D are views for explaining a method of displaying teeth images of a three-dimensional tooth image display apparatus for confirming tooth occlusion in multiple directions, which is an embodiment of the present invention.

Referring to FIGS. 1 and 2A, the controller 150 acquires a three-dimensional tooth image through the communication unit 110 or the three-dimensional scanner 120. The control unit 150 may display the image display signal menu 210 on the display unit 140 that can generate an image display signal for displaying the obtained three-dimensional tooth image 200 and the cut tooth image. In this embodiment, the means capable of generating the video display signal will be described with the menu 210 displayed on the display unit 140. However, the means for generating the video display signal may include various means such as a specific key, .

Referring to FIGS. 1, 2B and 2C, when the user selects the image display signal menu 210 to generate an image display signal, the controller 150 determines whether a user exists on the left side of the predetermined cut surface 220 The inner / outer image of the teeth, and the inner / outer image of the teeth on the right side. Here, the cut surface may be a surface preset by a user or the like.

2D, the controller 150 displays the generated left side image 230, left side image 240, right side image 250, and right side image 260 on one screen Can be displayed on the display unit 140 at the same time. The control unit 150 can extract the occlusion position of the maxillary teeth and the mandibular teeth. The control unit 150 controls the left outer image 230 and the left inner image 240 so that the extracted interlocking positions 231, 232, 241, 242, 243, 251, 252, 253, 261, 262, 263, The right side outer image 250 and the right side inner image 260 to be displayed on the display unit 140. [ For example, the control unit 150 may display a shape such as a circle, a star, a triangle, and the like on the occlusion position, digitize the occlusion position, and display the occlusion position on the display unit 140.

Referring to FIG. 2E, when the user inputs a detailed view signal for viewing the occlusion position in detail through the user input unit 130, the controller 150 displays the occlusion position portions 231, 232, 241, 242, 243, 251, 252, 253, 261, 262, 263, and 264 can be displayed on the display unit 140 in a translucent manner. Thus, the user can more clearly confirm the shape of the occlusion position portion. In the present embodiment, the rest of the tooth image portions except for all the occlusion position portions are described as being translucent. However, the remaining tooth image portions may be displayed in a translucent manner only for the specific occlusion position selected by the user.

Referring to FIG. 2F, when an image of a specific tooth is selected through the user input unit 130, the controller 150 may display only the image of the specific tooth including the occlusion position 232 on the display unit 140. When the tooth rotation signal is inputted through the user input unit 130, the control unit 150 rotates the image of the specific tooth according to the tooth rotation signal and displays it on the display unit 140.

FIG. 3 is a flowchart for explaining a three-dimensional tooth image display method for confirming tooth occlusion in multiple directions, which is one embodiment of the present invention.

Referring to FIG. 3, a three-dimensional tooth image display device obtains a three-dimensional tooth image from an apparatus such as a communication unit or a three-dimensional scanner (300). The user sets a cutting plane through a user input unit or the like (310). The three-dimensional tooth image display apparatus generates an inner / outer image of the teeth on the left side and an inner / outer image of the teeth on the right side based on the cut surface (320). The 3D tooth image display device extracts the occlusion positions of the maxillary teeth and the mandibular teeth (330). The three-dimensional tooth image display apparatus simultaneously displays the outer side image of the extracted occlusion position, the inner side image of the left side, the outer side image of the right side, and the inner side of the right side simultaneously on the display unit (340). When the zoom in / zoom out signal is input through the user input unit, the three-dimensional tooth image display apparatus displays the left outer image, the left inner image, the right outer image, and the right inner image by changing the size of the left outer image, (350).

According to another embodiment of the present invention, when a user inputs a detailed view signal for viewing the occlusion position in detail through the user input unit, the three-dimensional tooth image display apparatus displays the remaining tooth image portions except for the occlusion position portion in a semi- Can be displayed.

According to another embodiment, when an image of a specific tooth is selected through the user input unit, the three-dimensional tooth image display apparatus can display only the image of the specific tooth including the occlusion position on the display unit. When the tooth rotation signal is input through the user input unit, the three-dimensional tooth image display apparatus can display an image of a specific tooth on the display unit according to the tooth rotation signal.

It should be appreciated that the method of displaying a three-dimensional tooth image may include a method executed by a control unit of the three-dimensional tooth image display apparatus of FIG.

A computer readable storage medium may be recorded with a program for executing a three-dimensional tooth image display method for confirming tooth occlusion in multiple directions according to the present invention.

The embodiments described may be constructed by selectively combining all or a part of each embodiment so that various modifications can be made.

It should also be noted that the embodiments are for explanation purposes only, and not for the purpose of limitation. In addition, it will be understood by those of ordinary skill in the art that various embodiments are possible within the scope of the technical idea of the present invention.

100: 3D tooth image display device
110:
120: 3D Scanner
130: user input section
140:
150:

Claims (20)

A three-dimensional tooth image display method for confirming tooth occlusion in multiple directions in a three-dimensional tooth image display apparatus,
Extracting at least one first surface point located on the surface from the image of the maxillary teeth;
Extracting at least one second surface point located on the surface from the image of the mandibular teeth; And
And extracting the first surface point and the second surface point to an occlusion position of the upper teeth and the lower teeth when the distance between the first surface point and the second surface point is less than a predetermined distance A three dimensional tooth image display method for confirming tooth occlusion in multiple directions.
The method according to claim 1,
Further comprising displaying the extracted occlusion position on an inner / outer image on the left side and an inner / outer side image on the right side, to confirm tooth occlusion in multiple directions.
The method according to claim 1,
The predetermined distance may be,
A three-dimensional tooth image display method for confirming tooth occlusion in multiple directions, which is calculated by the following formula (1).
[Equation 1]
X = S / N * M
X: Set distance
S: the sum of the shortest distances between each tooth pair
N: number of tooth pairs
M: weight of 1 or less
The method according to claim 1,
In the three-dimensional tooth image, an inner / outer image of the teeth on the left side in which the upper teeth and the lower teeth are in an occluded state and a tooth on the right side Generating an inner / outer image; And
And simultaneously displaying the generated inner / outer image and the right inner / outer image on the one screen, in order to confirm the tooth occlusion in multiple directions.
5. The method of claim 4,
Wherein the generating the image comprises:
When a user inputs an image display signal for displaying a cut image of a tooth through a user input unit, an inner / outer image of the teeth on the left side and an inner / outer side image of the teeth on the right side based on the previously- Dimensional tooth image, the method comprising the steps of: (a) creating a three-dimensional tooth image;
5. The method of claim 4,
The cutting surface
A three-dimensional tooth image display method for confirming tooth occlusion in multiple directions, which is a surface passing through the center between the upper teeth of the upper teeth and the upper teeth of the lower teeth, or a surface set by a user, .
Setting tooth standard data;
Obtaining rotational axis information and center point information for each tooth from the tooth object data;
Changing a rotation axis angle with respect to a first tooth object of the tooth object data; And
Further comprising automatically aligning the rotational axis angle of the second tooth object using the modified rotational axis angle and the tooth standard data. ≪ RTI ID = 0.0 > 11. < / RTI >
8. The method of claim 7,
The step of automatically aligning the rotation axis angle of the second tooth object using the changed rotation axis angle and the tooth standard data may include:
Wherein when the first tooth object is inverted, the rotation axis angle of the second tooth object is automatically aligned according to the following equation (2): " (3) " Display method.
&Quot; (2) "
Y = B / A * C
Y: rotation axis angle of the second object that is automatically aligned
A: rotation axis angle of the first object set
B: rotation axis angle of the changed first object
C: rotation axis angle of the set second object
8. The method of claim 7,
The step of automatically aligning the rotation axis angle of the second tooth object using the changed rotation axis angle and the tooth standard data may include:
Wherein when the first tooth object is not transposed and the rotation axis angle is fixed with respect to the transposition, the rotation axis angle of the second tooth object is automatically aligned according to the following equation (3): " A three dimensional tooth image display method for confirming tooth occlusion.
&Quot; (3) "
Y = D- (DC) * (DB) / (DA)
Y: Angle of rotation axis of the automatically aligned second tooth object
A: rotation axis angle of the first object set
B: rotation axis angle of the changed first object
C: rotation axis angle of the set second object
D: Angle of rotation axis of the preset
[Case where the second object is located between the transpose and the first object]
A display unit for displaying data; And
Extracting at least one first surface point located on the surface from the image of the maxillary teeth and extracting at least one second surface point located on the surface from the image of the mandibular teeth and determining the distance between the first surface point and the second surface point And a control unit for extracting the first surface point and the second surface point as occlusion positions when the distance between the first surface point and the second surface point is less than a set distance.
11. The method of claim 10,
Wherein,
And the extracted occlusion position is included in the inner / outer image on the left side and the inner / outer side image on the right side, and displayed on the display unit, to confirm the tooth occlusion in the multiple directions.
11. The method of claim 10,
The predetermined distance may be,
Which is calculated by the following equation (1)
[Equation 1]
Y = S / N * M
Y: Set distance
S: the sum of the shortest distances between each tooth pair
N: number of tooth pairs
M: weight of 1 or less
A three-dimensional tooth image display device for confirming tooth occlusion in multiple directions.
11. The method of claim 10,
Wherein,
The inner / outer image of the teeth existing on the left side and the inner / outer image of the teeth present on the right side are generated on the basis of the cutting plane that divides the left and right sides of the maxillary and mandibular teeth in the 3D tooth image, Wherein the inner / outer image and the inner / outer image on the right side are simultaneously displayed on the display unit on one screen, for confirming tooth occlusion in multiple directions.
14. The method of claim 13,
Wherein,
When a user inputs an image display signal for displaying a cut image of a tooth through a user input unit, an inner / outer image of the teeth on the left side and an inner / outer side image of the teeth on the right side based on the previously- Dimensional tooth image display device for verifying tooth occlusion in multiple directions.
A memory for storing tooth standard data; And
The method includes obtaining rotation axis information and center point information for each tooth from the set tooth object data, changing the rotation axis angle of the first tooth object in the tooth object data, and using the changed rotation axis angle and the tooth standard data, And a control unit for automatically aligning the angle of the rotation axis of the three-dimensional tooth image display device.
16. The method of claim 15,
Wherein,
And when the first tooth object is displaced, the rotation axis angle of the second tooth object is automatically aligned according to the following equation (2): " (3) "
&Quot; (2) "
Y = B / A * C
Y: rotation axis angle of the second object that is automatically aligned
A: rotation axis angle of the first object set
B: rotation axis angle of the changed first object
C: rotation axis angle of the set second object
16. The method of claim 15,
Wherein,
When the first tooth object is not transposed but the rotation axis angle is fixed with respect to the transposition, the rotation axis angle of the second tooth object is automatically aligned according to the following formula (3) Dimensional tooth image display device.
&Quot; (3) "
Y = D- (DC) * (DB) / (DA)
Y: Angle of rotation axis of the automatically aligned second tooth object
A: rotation axis angle of the first object set
B: rotation axis angle of the changed first object
C: rotation axis angle of the set second object
D: Angle of rotation axis of the preset
[Case where the second object is located between the transpose and the first object]
The method of claim 11, wherein
Wherein,
When the user inputs a detailed view signal for viewing the occlusion position in detail through the user input unit, the remaining part of the tooth image other than the occlusion position part is processed as translucent and displayed on the display unit. A three-dimensional tooth image display device.
The method of claim 11, wherein
Wherein,
When an image of a specific tooth is selected through the user input unit, only the image of the specific tooth including the occlusion position is displayed on the display unit,
Wherein the image of the specific tooth is rotated and displayed on the display unit in accordance with the tooth rotation signal when the tooth rotation signal is inputted through the user input unit.
A computer-readable storage medium storing a program for executing a three-dimensional tooth image displaying method for confirming tooth occlusion in multiple directions according to any one of claims 1 to 9.

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