KR20200008403A - Method for automatic generating orthodontic data - Google Patents

Abstract

Disclosed is a method for generation data for automatic orthodontics. According to the present invention, the method for generation data for automatic orthodontics comprises: a teeth data extraction step of acquiring teeth data, a three-dimensional shape data for teeth of a patient for orthodontics in a computer aided design (CAD) system; a dental arch generation step of generating a dental arch for orthodontics; a root arch generation step of generating a root arch based on location of tooth roots from the teeth data; and a setup model data generation step of generating setup model data, three-dimensional shape data for teeth re-arranged to positions for orthodontics, wherein the setup model data generation step is performed by varying at least one of the root arch and the dental arch.

Description

Method for generating automatic orthodontic data {Method for automatic generating orthodontic data}

The present invention relates to a method for generating automatic orthodontic data, and more particularly, automatic orthodontic data capable of quickly and easily deriving setup model data, which is three-dimensional shape information of teeth rearranged to a position to be corrected. It relates to a production method.

Tooth correction refers to a functional / aesthetic treatment that moves a tooth to a desired position in the alveolar bone by applying an appropriate force to the tooth.

When the teeth are not evenly called malocclusion, malocclusion is not only good appearance, but also functionally unable to chew food, and may adversely affect pronunciation. In addition, neglect of malocclusion increases the likelihood of caries or gum disease, and can affect other parts of the body for a long time, causing other diseases or worsening.

Therefore, if there is a malocclusion, it is desirable to move the tooth to the correct position and posture through orthodontics to maintain the correct dental state. Indeed, many people have gained confidence in their appearance through orthodontics, and they often heal other illnesses that have been mistaken for their teeth.

In such orthodontics, orthodontics are used to fix the position of the teeth by gradually moving the teeth. Conventional orthodontic braces include orthodontic brackets and arch wires that are elastic.

The bracket is firmly attached to the tooth face of the tooth to be corrected, and the arch wire is connected to these brackets. Thus, by adjusting the tension of the arch wire connected to the brackets to vary the direction and magnitude of the force applied to the arch wire, the unocclusd teeth change their position and posture by the tension of the arch wire, The teeth are corrected by moving little by little.

By the way, the orthodontic bracket and the arch wire (orthodontic method) are disadvantageous from the aesthetic point of view, complicated and take a long time, and the dental care is recently made transparent because of the inconvenience of dental care during the procedure The transparent calibration method of performing orthodontic calibration with a transparent calibrator of shape is drawing attention.

This transparent calibration method involves acquiring three-dimensional shape data of the oral structure of the patient and visualizing an ideal tooth arrangement state from the acquired three-dimensional oral structure of the patient. In order to do this, each tooth must be manually moved / rotated, so it takes a lot of work time.

In addition, even during an ideal placement, interference between teeth may occur or a space may remain in a certain section. In such a case, it is inconvenient and time-consuming because it requires relocation such as moving the previously placed teeth again. There is a problem.

Republic of Korea Patent Publication No. 10-2011-0017051 (2011.02.21.)

Therefore, the problem to be solved by the present invention, it is possible to quickly and easily derive the setup model data of the three-dimensional shape information for the teeth rearranged to the position to be corrected in the three-dimensional shape information about the teeth of the patient To provide automatic orthodontic data generation.

According to an aspect of the present invention, in the CAD (Computer Aided Design) system, the tooth data extraction step of acquiring the dental data, which is the three-dimensional shape information about the teeth of the patient for orthodontics; A dental arch generating step of generating a dental arch for the orthodontic treatment; A root arch generation step of generating a root arch based on positions of the roots in the tooth data; And a setup model data generating step of generating setup model data which is three-dimensional shape information of teeth rearranged to a position to be corrected, wherein the setup model data generating step comprises at least one of the root arch and the dental arch. An automatic orthodontic data generation method may be provided, characterized in that provided by changing any one.

In the setup model data generation step, the teeth may be changed based on the root arch when changing the dental arch.

A dental plane generation step of generating a dental plane from the dental data is further included. In the dental arch generation step, the dental arch is generated on an occlusal plane of the dental data. In the root arch generating step, the root arch is spaced apart from the occlusal plane, and when the dental arch is changed, the teeth may be constrained and changed by the root arch.

The tooth data extraction step may include a tooth generation step of generating a tooth axis which is a reference axis in the longitudinal direction of each of the teeth; And a connection point generation step of generating a connection point for controlling the movement of the tooth on the tooth axis.

The tooth axis generating step may include: a tooth direction line setting step of connecting a first selection point and a second selection point selected at left and right ends of the tooth and setting a tooth direction line indicating an arrangement direction of the tooth; A tooth direction plane deriving step of deriving a tooth direction plane extending downward of the tooth direction line; And a tooth setting step of setting a center line on the tooth direction plane as the tooth axis, wherein the tooth axis is constrained to the root arch when the dental arch is changed or the tooth axis is connected to the root arch when the root arch is changed. May be constrained.

The generating of the setup model data may include a connection point movement step of moving the teeth corresponding to the connection points as the connection points are simultaneously moved to the dental arch.

The generating of the setup model data may further include a tooth plane rotating step in which the tooth plane is rotated such that the tooth plane is disposed in a tangential direction at the connection point on the dental arch.

The generating of the setup model data may further include an arch correction step of modifying a shape of at least one of the dental arch and the root arch such that the teeth are rearranged to a position to be corrected.

The generating of the setup model data may further include a connection point position correction step of correcting positions of the connection points.

The connection points are provided to be selected to be linked to the movement of at least one of the dental arch and the root arch or to be non-synchronized to the movement of at least one of the dental arch and the root arch, and when selected to be linked to the movement. The teeth may be moved according to the movement of the connection points.

In the dental arch generating step, the dental arch may be provided in a curved shape based on the arrangement of the teeth.

The dental arch generating step may include a control point generating step of generating five dental arch control points disposed on the dental arch.

In the set-up model data generation step, the total tooth spacing plus spacing between the teeth, the tooth average spacing divided by the total tooth spacing, and the inclination between the incisor and the occlusal plane are in real time. It can be calculated and displayed on the display.

Embodiments of the present invention, in the CAD (Computer Aided Design) system, the setup model data that is the three-dimensional shape information for the teeth rearranged to the position to be corrected in the tooth data, which is the three-dimensional shape information for the teeth of the patient Can be derived quickly and easily.

1 is a diagram illustrating an automatic orthodontic data generation method according to an embodiment of the present invention.
FIG. 2 is a view showing tooth data obtained in the tooth data extraction step of FIG. 1.
3 is a view showing a tooth axis generated in the tooth data extraction step of FIG.
FIG. 4 is a diagram illustrating a dental plane generated from the dental data of FIG. 1.
FIG. 5 is a diagram illustrating a dental arch formed in the dental arch generating step of FIG. 1.
6 and 7 illustrate connection points generated in the connection point generation step of FIG. 1.
8 is a view showing a root arch generated in the root arch generation step of FIG.
FIG. 9 is a view illustrating a tooth arrangement state before the setup model data generation step of FIG. 1 is performed.
FIG. 10 is a view illustrating a tooth arrangement state after the setup model data generation step of FIG. 1 is performed.

In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings which illustrate preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, in describing the present invention, descriptions of functions or configurations already known will be omitted to clarify the gist of the present invention.

1 is a view showing an automatic orthodontic data generation method according to an embodiment of the present invention, Figure 2 is a view showing the tooth data obtained in the tooth data extraction step of Figure 1, Figure 3 is a tooth of Figure 1 FIG. 4 is a view showing a tooth axis generated in the data extraction step, FIG. 4 is a diagram illustrating a dental plane generated from the dental data of FIG. 1, and FIG. 5 is a digital arch formed in the dental arch generation step of FIG. 1. 6 and 7 are views illustrating a connection point generated in the connection point generation step of FIG. 1, and FIG. 8 is a view showing a root arch generated in the root arch generation step of FIG. 1. 9 is a view illustrating a tooth arrangement state before the setup model data generation step of FIG. 1 is performed, and FIG. 10 is a view illustrating a tooth arrangement state after the setup model data generation step of FIG. 1 is performed. .

The automatic orthodontic data generation method according to the present embodiment is performed in a computer aided design (CAD) system. Computer Aided Design (CAD) system includes an arithmetic unit (not shown) in which three-dimensional shape information is processed, an input unit (not shown) for inputting an operation signal to the arithmetic unit (not shown), and an arithmetic unit (not shown). And a display unit (not shown) for visually displaying three-dimensional shape information. The computing unit (not shown) may correspond to a personal computer (PC), the input unit (not shown) may correspond to a keyboard, a mouse, and a touch screen, and the display unit (not shown) may correspond to a monitor.

The automatic orthodontic data generation method performed in the CAD (Computer Aided Design) system, as shown in Figures 1 to 10, teeth data that is three-dimensional shape information about the teeth (T) of the patient for orthodontics Tooth data extraction step (S110) for obtaining a, a dental plane generation step (S120) for generating a dental plane from the dental data (Dental plane), and a dental arch for generating a dental arch (dental arch, DA) for orthodontics The generation step (S130), the root arch generation step (S140) for generating a root arch (root arch, RA) based on the position of the roots in the tooth data, and the teeth (T) rearranged to the position to be corrected And a setup model data generation step (S150) of generating setup model data that is three-dimensional shape information.

In the tooth data extraction step (S110), tooth data, which is three-dimensional shape information of the teeth T of the patient, is obtained for orthodontic treatment. Tooth data is digitized data through a three-dimensional shape generating device such as a three-dimensional scanner as three-dimensional shape information on the teeth (T) of the patient, and the surface of the three-dimensional object to be easily recognized by the computer aided design (CAD) system. Data is represented by polygonal polygons.

The tooth data of the patient generated through the three-dimensional scanner, such as a three-dimensional scanner, is transmitted to the operation unit (not shown) of the CAD (Computer Aided Design) system through a wireless or wired line.

In the tooth data extraction step (S110), the user's manipulation or calculation unit (not shown) compares the teeth T displayed in the tooth data with the outer lines of the gum to distinguish the gums and the teeth T from the tooth data, and the teeth ( Three-dimensional coordinates of T) are obtained. The calculation unit (not shown) displays the divided teeth and gums on the display unit (not shown) as shown in FIGS. 3 to 6.

In addition, the tooth data extraction step (S110), the tooth generation step of generating a tooth axis (S) which is a reference axis from the root of the tooth (T) to the head direction, and the movement of the teeth (T) on the tooth axis (S) A connection point generation step of generating a connection point (E) for the dental arch for controlling.

In the tooth axis generating step, the tooth axis S, which is a reference axis of the teeth T, is generated. This tooth axis generation step (S120), connecting the first selection point (G1) and the second selection point (G2) selected at the left and right ends of the tooth (T) to display the placement direction (lateral direction) of the tooth (T) A tooth direction line setting step of setting the tooth direction line 110, a tooth direction plane deriving step of deriving a tooth direction plane 120 extending downward of the tooth direction line 110, and on the tooth direction plane 120. A tooth axis setting step of setting the center line to the tooth axis (S).

The tooth axis S thus formed is disposed past the root arch RA after the root arch RA is generated.

In the tooth direction line setting step, the first selection point G1 and the second selection point G2 selected at the left and right ends of the tooth T are selected through an input unit (not shown). In addition, in the tooth direction line setting step, a tooth direction line 110 connecting the first selection point G1 and the second selection point G2 and indicating an arrangement direction of the tooth T is set to display the display unit (not shown). ) Is displayed.

In the tooth direction plane derivation step, the tooth direction plane 120 extending downward from the tooth direction line 110 is derived. As shown in detail in FIG. 3, in the present embodiment, the tooth direction plane 120 has an upper end located in an upper region of the teeth T, a lower end positioned in a lower region of the teeth T, and both end ends thereof. It is provided in a rectangular shape located in the edge region of the).

In the tooth axis setting step, the center line on the tooth direction plane 120 is set as the tooth axis S. As described above, the tooth direction plane 120 has a rectangular shape in which an upper end is located in an upper region of a tooth T, a lower end is located in a lower region of a tooth T, and both end portions are located in an edge region of a tooth T. Since it is provided as, the longitudinal center line that bisects the tooth plane 120 in the longitudinal direction corresponds to the tooth axis (S). Such a tooth axis S is visually displayed on a display unit (not shown) as shown in detail in FIG. 3.

In the connection point generation step (S130), the connection point E for the dental arch for controlling the movement of the teeth T on the tooth axis S is generated. The connection point E for the arch arch may be created at a predetermined position on the tooth axis S. In this embodiment, the position where the uppermost end point of the tooth T is perpendicularly projected to the tooth axis S, or the tooth axis and the dental plane The connection point (E) for the dental arch is created at the point where the (Dental plane) meets.

In the dental plane generation step S120, a dental plane is generated from the dental data. In the present embodiment, the dental plane includes an occlusal plane forming step of creating an occlusal plane (OP), which is an occlusal virtual plane of teeth, as shown in detail in FIG. 4, and an occlusal plane (OP). A mid sagittal plane (SP) forming a mid sagittal plane (SP).

In the occlusal plane forming step, an occlusal plane OP, which is an imaginary plane where the teeth and lower teeth occlude, is formed. In this embodiment, the occlusal plane OP is formed as a plane passing by three points, where each of the three points is disposed at the center point of the front teeth, the left molar teeth, and the right molar teeth, as shown in detail in FIG. 4.

In the mid sagittal plane forming step, a mid sagittal plane (SP), which is a plane intersecting the occlusal plane OP, is formed. In the present embodiment, the median sagittal plane SP is a plane perpendicular to the occlusal plane OP.

In the dental arch generating step S130, a dental arch DA for orthodontic treatment is generated. The dental arch DA corresponds to a reference curve indicating the position where the teeth T should ideally be placed, and in this embodiment the dental arch DA is created on the occlusal plane OP of the tooth data.

In the dental arch generating step S130, the dental arch DA is provided in a curved shape based on the arrangement state of the teeth T. In detail, in the dental arch generating step S130 of the present exemplary embodiment, the dental arch DA is provided in an appropriate curved shape in consideration of the positions of the teeth T and the connection points E for the dental arch. That is, the user manipulates the input unit (not shown) in consideration of the positions of the teeth T and the connection points E for the dental arch, and according to the manipulation signal, the curved arch DA appropriately on the occlusal plane OP ) Is generated.

The dental arch generating step S130 may include a control point generating step of generating five dental arch control points CP disposed spaced apart from each other in the dental arch DA after the dental arch DA is generated. The control points CP for the digital arch are parts in which an operation by an input unit (not shown) is performed when the shape of the digital arch DA is changed later.

In the root arch generation step S140, a root arch RA is generated based on the positions of the roots in the tooth data. In the tooth data of the present embodiment, as shown in detail in FIGS. 3, 9, and 10, the root is positioned below the tooth direction plane 120 and is represented as a tooth reference point G on the tooth axis S. FIG. The axis reference point G may be adjusted by a user of a computer aided design (CAD) system and used as a reference for defining a root arch.

The position of the tooth reference point (G) is initially estimated by the data of the teeth (T) and gums separated in the tooth data extraction step (S110), and the position may be corrected through an input unit (not shown).

In the root arch generation step S140, the root arch RA is provided in a curved shape based on the arrangement state of the tooth reference points G and the shape of the gum. In detail, the root arch RA in the root arch generation step S140 according to the present exemplary embodiment is provided in an appropriate curved shape in consideration of the position of the tooth reference points G and the shape of the gum. That is, the user manipulates the input unit (not shown) in consideration of the position of the tooth reference points G and the shape of the gum, and a root arch RA having an appropriate curved shape is generated according to the manipulation signal.

In the present embodiment, the root arch RA may be generated based on the position of the axis reference points G and the shape of the gum on the occlusal plane OP and then moved downward by a predetermined distance with respect to the dental arch DA. have.

The root arch generation step S140 includes a control point generation step for the root arch in which a plurality of root arch control points (not shown) disposed on the root arch RA are generated. These control points for the root arch (not shown) are the parts that are manipulated by the input unit (not shown) when the shape of the root arch RA is changed later.

Meanwhile, the above-mentioned connection points E for the dental arch may be selected to be linked to the movement of the dental arch DA and the root arch RA, or may be selected to be non-linked to the movement of the dental arch DA and the root arch RA. It can be arranged to be. Interlocking and non-interlocking of the connection points E for the arch arch are selected by an input signal of an input unit (not shown) and visually displayed on a display unit (not shown). The connection point E for the dental arch shown in green in FIGS. 7 to 10 is selected to be linked to the movement of the dental arch DA and the root arch RA and the connection point E for the dental arch shown in gray is the dental arch DA. ) And non-linked to the movement of the root arch (RA).

If the connection point (E) for the dental arch is selected to be linked to the movement of the dental arch (DA) and the root arch (RA), the connection point (E) for the dental arch with the dental arch (DA) is moved in accordance with the movement of the dental arch (DA). The tooth T is also moved along the movement of the connection point E for the dental arch.

Here, the movement of the dental arch (DA) is meant to include all the simple movement, rotation, shape deformation of the dental arch (DA), the dental arch (DA) manipulates the simple movement arrow (M) shown in detail in FIG. It can be moved in the three-axis direction by the input signal of the input unit (not shown), it can be rotated in the arrow direction by the input signal of the input unit (not shown) for manipulating the rotation arrow (N).

The movement of the root arch RA includes all simple movements, rotations, and deformations, similar to the dental arch DA.

During the movement of the teeth according to the movement of the dental arch DA and the root arch RA, the teeth T are restrained by the root arch RA. For example, when the dental arch DA is moved forward, the connection points E for the dental arch connected to the dental arch DA are moved forward, so that the tooth T is centered around the root arch RA. The tooth T is moved in a rotational manner. In addition, when the root arch RA is moved forward, the teeth T are moved in such a manner that the teeth T connected to the root arch RA are rotated about the dental arch DA.

Conventionally, in the process of simulating the movement of the teeth (T) for orthodontics, an error in which the moved tooth (T) is disposed at a position out of the maxillary / mandible is frequently generated. In this embodiment, the teeth (T) are By being constrained and moved by the root arch RA, it is possible to prevent the tooth T moved for orthodontics from disregarding the maxillary / mandala and being placed in a position out of the maxillary / mandala.

In addition, the connection points E for the dental arch, as shown in detail in Figure 7, the position can be corrected in the direction of the arrow by the input unit (not shown). The correction of the connection point E for the dental arch is used to correct this because the upper surface of the teeth T is not exactly disposed on the occlusal plane OP as can be seen in the Curve Of Spee.

On the other hand, in the setup model data generation step (S150), the setup model data that is three-dimensional shape information for the teeth (T) rearranged to the position to be corrected is generated.

In the setup model data generation step S150, a sum of the transverse lengths of the teeth T and the transverse lengths of the entire teeth T is calculated through an operation unit (not shown), and the dental arch in which the teeth T are disposed is calculated. (DA) and the length of the root arch RA are calculated.

In addition, in the setup model data generation step S150, the connection point E for the dental arch is provided on the dental arch DA to equally distribute the space between the teeth T in consideration of the lateral length of each tooth T. The tangential vector at the position to be arranged and at the position where the connection point E for the dental arch is disposed is calculated.

As described above, in the setup model data generation step (S150) according to the present embodiment, setup model data in which teeth T are rearranged is generated. In this process, teeth orthodontics of teeth T are rearranged. The arch connection point E is connected to the dental arch DA, the tooth axis S passes through the root arch RA, and the dental plane 120 is the dental arch DA at the connection point E for the dental arch. Are arranged in a direction parallel to the tangential direction of

Interference may occur in the occlusion of the upper teeth and the lower teeth by the rearrangement of the teeth. Such interference may be caused by the interference lines indicating that the upper teeth interfere with the screen after rearranging the teeth (T). (K) is displayed. Through the interference display line K, the user may visually recognize that interference occurs between the upper teeth and the lower teeth during the rearrangement of the teeth T. FIG.

In the setup model data generation step S150, the display unit (not shown), in addition to the interference line K, as shown in FIG. 8, the total spacing of the teeth plus the spacing between the teeth T, and An average tooth interval (Unit Margin) obtained by dividing an entire tooth interval by the number of teeth (T), and an angle between the front teeth and the occlusal plane OP are calculated and displayed on a display unit (not shown) in real time.

The user may recognize the above-described information to correct the position and shape of the dental arch DA and the root arch RA.

In summary, the setup model data generation step S150 according to the present embodiment includes a connection point position correction step of correcting positions of the connection points E for the dental arch, and a connection point for the dental arch according to the movement of the dental arch DA. E) joint point movement step of simultaneously moving to the dental arch (DA), and the tooth direction such that the tooth direction plane 120 is disposed in the tangential direction of the dental arch (DA) at the connection point (E) for the dental arch The tooth plane rotation step of rotating the plane 120 and the arch modification step of modifying the shape of the dental arch (DA) and root arch (RA) to rearrange the teeth (T) to the position to be corrected.

First, a connection point position correction step of correcting the position of the connection points E for the dental arch, if necessary, is performed.

Next, in the connection point movement step, the connection points E for the dental arch of each tooth T are moved to the dental arch DA at the same time according to the movement of the dental arch DA. According to the movement of the connection points E for the dental arch, the teeth T are also restrained and moved to the root arch RA.

In the dental plane rotation step, the dental plane 120 is rotated such that the dental plane 120 is disposed in the tangential direction of the dental arch DA at the connection point E for the dental arch. In accordance with the rotation of the tooth plane 120 is constrained to the root arch (RA) to the teeth (T) is rotated.

In the prior art, the dental arch DA is used only as a reference, and the user has to move each tooth individually to generate setup model data. However, in the present embodiment, the teeth T are connected to the dental arch DA and the connection point E for the dental arch, which is linked to the movement of the dental arch DA, is introduced to the teeth according to the movement of the dental arch DA. Since the (T) are rearranged in real time at the same time, it is possible to rearrange the teeth (T) along the dental arch (DA) faster and more conveniently than in the prior art.

In the dental arch correction step, the shape of the dental arch DA is modified such that the teeth T are rearranged to a position to be corrected. In the shape of the dental arch DA, an operation signal by an input unit (not shown) for moving the control points CP of the dental arch of FIG. 8 is transmitted to the calculation unit (not shown). In addition, the simple movement and rotation of the dental arch DA is performed by an operation signal transmitted by an input unit (not shown) for moving the simple movement arrow M and the rotation arrow N of FIG. 8 to the operation unit (not shown). .

In connection with the movement of the dental arch DA including the simple movement, rotation and shape change of the dental arch DA, the connection points E for the dental arch DA are moved along the dental arch DA. At this time, the teeth (T) are also restrained by the root arch (RA) in accordance with the movement of the connection point (E) for the dental arch.

On the other hand, in the case of changing the root arch (RA) the tooth is rotated so that the tooth axis of the tooth passes through the root arch (RA) in conjunction with the movement of the root arch (RA).

As described above, when the dental arch DA is moved in the setup model data generation step S150, the teeth T are constrained to the root arch RA to change positions. As the dental arch DA is moved as in the present embodiment, the teeth T are restrained and moved to the root arch RA, whereby the moved teeth T disregard the maxillary / mandala and are out of the maxillary / mandala. The occurrence of errors that are placed is prevented.

As described above, in the method for generating automatic orthodontic data according to the present embodiment, in a computer-aided design (CAD) system, a tooth rearranged to a position to be corrected in the tooth data, which is three-dimensional shape information of the teeth T of the patient Setup model data, which is three-dimensional shape information about (T), can be quickly and easily derived.

Although the present embodiment has been described in detail with reference to the drawings, the scope of the present invention is not limited to the above-described drawings and description.

As described above, the present invention is not limited to the described embodiments, and various modifications and changes can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to be belong to the claims of the present invention.

110: tooth direction line 120: tooth direction plane
OP: occlusal plane DA: dental arch
RA: Root Arch CP: Control Point for Dental Arch
E: Connection point for dental arch G: Axial reference point
K: interference line S: tooth axis
T: Tooth

Claims (13)

In a computer aided design (CAD) system,
A tooth data extraction step of acquiring tooth data, which is three-dimensional shape information of the teeth of the patient, for orthodontics;
A dental arch generating step of generating a dental arch for the orthodontic treatment;
A root arch generation step of generating a root arch based on positions of the roots in the tooth data; And
A setup model data generation step of generating setup model data which is three-dimensional shape information of the teeth rearranged to a position to be corrected,
The setup model data generation step,
And at least one of the root arch and the dental arch. The method of claim 1,
And in the setup model data generation step, the teeth are changed based on the root arch when the dental arch is changed. The method of claim 2,
Further comprising a dental plane generation step of generating a dental plane from the tooth data (Dental plane),
In the dental arch generating step, the dental arch is generated on an occlusal plane of the dental data,
In the root arch generation step, the root arch (root arch) is spaced apart from the occlusal plane,
And the teeth are constrained to the root arch to change when the dental arch is changed. The method of claim 1,
The tooth data extraction step,
A tooth generating step of generating a tooth axis which is a longitudinal reference axis of each of the teeth; And
Automatic orthodontic data generation method comprising a connection point generation step of generating a connection point for controlling the movement of the tooth on the tooth axis. The method of claim 4, wherein
The axis generation step,
A tooth direction line setting step of connecting a first selection point and a second selection point selected at left and right ends of the tooth and setting a tooth direction line indicating an arrangement direction of the tooth;
A tooth direction plane deriving step of deriving a tooth direction plane extending downward of the tooth direction line; And
A tooth axis setting step of setting a center line on the tooth direction plane as the tooth axis,
And the tooth axis is constrained to the root arch when the dental arch is changed or the tooth axis is constrained to the root arch when the root arch is changed. The method of claim 5,
The setup model data generation step,
And a connection point movement step of moving the teeth corresponding to the connection points as the connection points are simultaneously moved to the dental arch. The method of claim 6,
The setup model data generation step,
And a dental direction rotation step in which the dental direction plane is rotated such that the dental direction plane is disposed in a tangential direction at the connection point on the dental arch. The method of claim 6,
The setup model data generation step,
And an arch correcting step of correcting a shape of at least one of the dental arch and the root arch so that the teeth are rearranged to a position to be corrected. The method of claim 6,
The setup model data generation step,
And a connection point position correction step of correcting positions of the connection points. The method of claim 4, wherein
The connection points are provided to be selected to be linked to the movement of at least one of the dental arch and the root arch or to be non-linked to the movement of at least one of the dental arch and the root arch,
Automatic teeth orthodontic data generation method characterized in that the teeth are moved in accordance with the movement of the connection point when selected to be linked to movement. The method of claim 1,
In the dental arch generating step, the dental arch is an orthodontic data generation method, characterized in that provided in a curved shape based on the arrangement of the teeth. The method of claim 1,
The dental arch generating step includes a control point generating step of generating a control point for five dental arch disposed on the dental arch. The method of claim 1,
In the set-up model data generation step, the total tooth spacing plus spacing between the teeth, the average tooth spacing divided by the total tooth spacing, and the inclination between the incisor and the occlusal plane are in real time. Automatic orthodontic data generation method characterized in that the calculated on the display.

Images