KR102304435B1 - Method for anchor pin placement and guide design apparatus for implant surgery - Google Patents

Abstract

An anchor pin placement method and a guide design device for implant surgery performing the same are disclosed. An anchor pin placement method and an apparatus for designing a guide for implant surgery performing the same according to an embodiment automatically inserts an anchor pin for fixing the guide to the guide when designing a guide for implant surgery for a dental image.

Description

Anchor pin placement method and guide design apparatus for implant surgery performing the same {Method for anchor pin placement and guide design apparatus for implant surgery}

The present invention relates to a technique for designing a guide for dental implant surgery in a dental image.

In the process of designing a guide for dental implant surgery using software, the user directly sets the placement position of the anchor pin after completing the placement of the fixture. When the guide is fastened to the patient's oral cavity, the anchor pin is used as a guide fixing pin in a case where there are no remaining teeth in some areas or a toothless case so that the guide does not flow.

When the placement position of the anchor pin is set in the above method, a drilling hole for the anchor pin is created in the guide shape in the same way as the drilling hole of the fixture, and it is used to fix the guide during surgery. Commercially available software provides the anchor pin placement function as a standard, but the user manually adjusts the anchor pin placement position and angle to set the final placement position. In this case, the design time increases as much as the time similar to the case of manually placing the fixture.

Korean Patent Publication No. 10-2009-0041749 (published on April 29, 2009)

According to one embodiment, when designing a guide using guide design software for dental implant surgery, an anchor pin placement method capable of reducing work time by minimizing user manipulation for anchor pin design, and a guide design device for implant surgery performing the same are proposed. do.

An anchor pin implantation method according to an embodiment includes the steps of dividing a dental image of a patient into a plurality of tooth areas, selecting a tooth number to be operated on in the divided tooth area, and selecting the remaining teeth and selected teeth in the tooth area. Determining whether the anchor pin is implanted as a reference, and automatically setting the anchor pin implantation information when it is determined that anchor pin implantation is necessary.

The anchor pin implantation information may include at least one of an anchor pin implantation area, number of implants, an implantation position, an implantation depth, an implantation direction, and an implantation angle.

The step of determining whether to place the anchor pin includes the steps of checking the presence or absence of residual teeth by tooth number, the step of judging that the selected tooth has no residual teeth as the first priority when checking the presence of residual teeth, and the anchor pin placement area is the posterior part It may include the step of determining whether the anchor pin is implanted according to whether it is a cognitive anterior region.

The step of determining whether to place the anchor pin according to whether it is a posterior or anterior region includes the steps of placing an anchor pin when the first condition in which there are no consecutively preset number of teeth in the posterior region is met, and in the anterior region based on the midline The step of implanting an anchor pin if the second condition is met without a preset number of teeth consecutively from one tooth to the opposite tooth, and the first and second conditions are not met, but a preset number of teeth are continuously set If the third condition is absent, it may include the step of implanting an anchor pin.

The step of automatically setting the placement information of the anchor pin includes the steps of setting the basic direction of installation of the anchor pin, the steps of setting the installation position of the anchor pin when the basic direction of installation of the anchor pin is set, and the installation position of the anchor pin When set, the step of setting the implantation depth of the anchor pin, and when the implantation position and implantation depth of the anchor pin are determined, it may include the step of setting the anchor pin implantation direction and the implantation angle.

The step of automatically setting the placement information of the anchor pin is, when the basic direction of anchor pin placement is set, when the guide is designed by establishing an implant surgery plan in the maxilla, the anchor pin is placed in the palatal direction based on the maxillary arch line. In the step of setting the basic direction of anchor pin placement as much as possible, and when designing a guide by establishing an implant surgery plan in the mandible when setting the basic direction of anchor pin placement, the anchor pin is placed in the buccal direction based on the arch line. It may include the step of setting the basic direction of anchor pin implantation so as to be possible.

The step of automatically setting the placement information of the anchor pin includes the steps of setting the anchor pin placement position to the area where the crown and fixtures are not placed in the absence of tooth numbers or teeth that are only proceeding with the crown design, and the teeth where the fixture is not placed. If a natural tooth exists in the adjacent tooth of the number, it may include the step of setting the placement position of the anchor pin so that it can be fixed to the opposite position or to the end of the guide.

The step of automatically setting the implantation information of the anchor pin includes the steps of setting the placement position of the anchor pin to maintain a preset distance with the implant structure including the fixture, and the anatomical structure including the neural tube and the maxillary sinus at a preset distance, respectively Setting the implantation position of the anchor pin to maintain the, and when the implantation position of the anchor pin is set may include the step of setting the implantation depth of the anchor pin to be located at a preset distance downward to the alveolar bone.

The step of automatically setting the implantation information of the anchor pin includes the steps of placing the anchor pin so that a preset first angle is maintained between the reference axis of the fixture and the direction of placement of the anchor pin in the cross image of the anterior and posterior regions; In the axial image of the posterior region, placing the anchor pin so that a second angle preset with the parallel section where the reference axis point of the anchor pin is located and the direction of placement of the anchor pin is maintained in advance, and the axis of the anterior region ( Axial) may include the step of implanting the anchor pin so that the parallel (Parallel) cross-section in which the reference axis point of the anchor pin is located in the image and the direction of installation of the anchor pin are perpendicular to each other.

The anchor pin implantation method includes the steps of receiving a user manipulation signal for the automatically implanted anchor pin after the automatic anchor pin implantation and performing fine adjustment, and when the automatic insertion of the anchor pin is impossible, the anchor pin is manually installed according to the user manipulation signal The step of implantation may be further included.

In the anchor pin implantation method, standard information commonly used anatomically is set for automatic setting of anchor pin placement information, and when the user sets anchor pin implantation reference information, the standard information is out of the preset range from the standard information. At least one of displaying an alarm or warning message informing the user of this on the screen, and displaying an alarm or warning message informing him of this on the screen when the user fine-tunes the information after the automatic setting of anchor pin placement information is out of a preset range from the standard information may further include.

A guide design device for implant surgery includes: a data acquisition unit for acquiring a dental image; a controller for automatically installing an anchor pin for fixing the guide to the guide when designing a guide for implant surgery targeting the acquired dental image; It may include an output unit for displaying a dental image including an anchor pin implanted on the screen.

The control unit may determine whether to place an anchor pin for each posterior and anterior teeth based on the remaining teeth and selected teeth in the plurality of divided tooth regions, and automatically set the anchor pin placement information when it is determined that anchor pin implantation is necessary.

After determining the maxilla or mandible for designing the guide, the control unit sets the basic direction of anchor pin placement based on the maxillary and mandibular arch lines, sets the anchor pin placement position to a position where there are no fixtures and adjacent teeth, and the patient's You can set the anchor pin distance between the implant structure and the anatomical structure.

The control unit implants the anchor pin so that the reference axis of the fixture and the insertion direction of the anchor pin in the cross image of the anterior region and the posterior region are maintained at a preset first angle, and the anchor pin in the axial image of the posterior region Anchor pins are implanted so that the second angle preset is maintained between the parallel section where the reference axis point of the anchor pin is located and the anchor pin placement direction. (Parallel) Anchor pins can be placed so that the cross section and the direction of the anchor pins are perpendicular to each other.

The guide design device for implant surgery further includes an input unit that receives a user manipulation signal, and the control unit receives a user manipulation signal from the input unit after the automatic anchor pin implantation and performs fine adjustment for the automatically placed anchor pin after the automatic anchor pin implantation. In case automatic placement of anchor pins is not possible, anchor pins can be manually placed according to user manipulation signals.

According to the anchor pin implantation method and the guide design device for implant surgery performing the same according to an embodiment, the anchor pin used to maximize the fixing force of the guide when designing the guide using guide design software for dental implant surgery can be automatically placed. can For example, if anchor pin placement is required depending on the patient's case, anchor pin placement information, including the location, depth, and direction of anchor pin placement, can be automatically suggested to the user according to the logic of the remaining teeth and surgical selection tooth criteria. have. Accordingly, it is possible to minimize user manipulation for the anchor pin design, thereby increasing the convenience of use and minimizing the working time. Furthermore, after the user confirms, if necessary, the user can further perform fine adjustment manually, thereby increasing the accuracy.

1 is a view showing the configuration of a guide design device for implant surgery according to an embodiment of the present invention;
2 is a view showing a dental image screen for explaining an example of dividing a tooth region according to an embodiment of the present invention;
3 and 4 are views showing a dental image showing an example of determining whether an anchor pin is implanted in the posterior part according to an embodiment of the present invention;
5 and 6 are views showing a dental image showing an example of determining whether an anchor pin is implanted for an anterior part according to an embodiment of the present invention;
7 is a view showing a dental image showing an anchor pin basic implantation area of a toothless patient according to an embodiment of the present invention;
8 and 9 are views showing a dental image showing an example of setting an anchor pin implantation basic direction according to an embodiment of the present invention;
10 is a view showing a dental image showing the placement position setting of the anchor pin according to an embodiment of the present invention;
11 and 12 are views showing an example of setting the placement position of the anchor pin in consideration of the surrounding structures according to an embodiment of the present invention;
13 is a view showing an example of setting an implantation depth of an anchor pin according to an embodiment of the present invention;
14 to 15 are views showing dental images showing the setting direction and implantation angle of the anchor pin according to an embodiment of the present invention;
16 is a view showing an example of manual fine adjustment of an anchor pin according to an embodiment of the present invention;
17 is a view showing a final surgical guide including an anchor pin hole according to an embodiment of the present invention;
18 is a view showing the flow of an anchor pin implantation method according to an embodiment of the present invention.

Advantages and features of the present invention, and a method for achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the art to which the present invention pertains. It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout.

In the description of the embodiments of the present invention, if it is determined that a detailed description of a known function or configuration may unnecessarily obscure the gist of the present invention, the detailed description will be omitted, and the terms to be described later are used in the embodiment of the present invention. These terms are defined in consideration of the function of Therefore, the definition should be made based on the content throughout this specification.

Each block in the accompanying block diagram and combinations of steps in the flowchart may be executed by computer program instructions (execution engine), which computer program instructions are executed by the processor of a general-purpose computer, special-purpose computer, or other programmable data processing device. It may be mounted so that its instructions, which are executed by the processor of a computer or other programmable data processing device, create means for performing the functions described in each block of the block diagram or in each step of the flowchart.

These computer program instructions may also be stored in a computer-usable or computer-readable memory that may direct a computer or other programmable data processing device to implement a function in a particular manner, and thus the computer-usable or computer-readable memory. It is also possible for the instructions stored in the block diagram to produce an article of manufacture containing instruction means for performing the functions described in each block of the block diagram or each step of the flowchart.

And since the computer program instructions may be mounted on a computer or other programmable data processing device, a series of operational steps is performed on the computer or other programmable data processing device to create a computer-executable process to create a computer or other programmable data processing device. It is also possible that the instructions for performing the data processing apparatus provide steps for executing the functions described in each block of the block diagram and each step of the flowchart.

In addition, each block or step may represent a module, segment, or portion of code comprising one or more executable instructions for executing specified logical functions, and in some alternative embodiments the blocks or steps referred to in the block or steps. It should be noted that it is also possible for functions to occur out of sequence. For example, it is possible that two blocks or steps shown one after another may be performed substantially simultaneously, and also the blocks or steps may be performed in the reverse order of the corresponding functions, if necessary.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the embodiments of the present invention illustrated below may be modified in various other forms, and the scope of the present invention is not limited to the embodiments described below. The embodiments of the present invention are provided to more completely explain the present invention to those of ordinary skill in the art to which the present invention pertains.

1 is a diagram illustrating the configuration of a guide design device for implant surgery (hereinafter, referred to as a 'design device') according to an embodiment of the present invention.

Referring to FIG. 1 , a design device 1 according to an embodiment designs an implant work piece including a crown, a fixture, and an abutment and a guide shape for dental treatment to design an implant Make a surgical plan. After simulating the implant placement plan, the user may proceed with implant surgery.

The design device 1 is an electronic device that executes an image processing program for designing a dental guide on a dental image. The electronic device includes a computer, a notebook computer, a laptop computer, a tablet PC, a smart phone, a mobile phone, a personal media player (PMP), and personal digital assistants (PDA). The image processing program includes a guide design program, an implant simulation program, a scan program, and a CAD program. In addition, it may be applied to a program for general dental image processing other than for dental implant surgery.

The dental guide design process using the image processing program includes surgical patient registration, CT data and oral scan data acquisition of registered patients, registration of CT data and oral scan data, arch line creation from the registered image data, and arch It is a process that includes creating a panoramic image using lines, setting the position and size of the crown model from the patient's oral scan data, positioning the implant structure including fixtures from the patient's CT data, designing the guide shape, and outputting the final guide. is composed The present invention relates to a technology for designing a guide shape during the above process and automatically implanting an anchor pin for fixing the guide.

Referring to FIG. 1 , a design apparatus 1 according to an exemplary embodiment includes a data acquisition unit 10 , a storage unit 12 , a control unit 14 , an input unit 16 , and an output unit 18 .

The data acquisition unit 10 acquires dental image data from teeth including the damaged target tooth of the patient. The dental image data includes, for example, CT image data of a patient and oral scan data.

The oral scan data is data having information on actual teeth including damaged teeth, and may be 3D information. The oral scan data may be obtained by scanning a plaster model created by imitating a patient's mouth with a 3D scanner. As another example, it may be obtained by scanning the inside of the patient's oral cavity using a 3D intra-oral scanner. The acquired oral scan data may be stored in the storage unit 12 .

CT image data may be obtained by generating tomographic images of the patient's head using computed tomography (CT), segmenting the tooth boundaries in each tomography image, and combining them into one. These oral scan data and CT image data are images obtained by imaging the maxillary teeth under the maxillary teeth with the patient’s mouth open, images obtained by imaging the mandibular teeth above the mandibular teeth with the patient’s mouth open, and local areas with the mouth closed. Including images obtained by the procedure, oral radiographs, etc. The acquired CT image data may be stored in the storage unit 12 .

The storage unit 12 stores various data such as information necessary for performing an operation of the design device 1 and information generated according to the operation of the design device 1 . The storage unit 12 according to an embodiment stores oral scan data and CT image data of an individual patient, and oral scan data and CT image data of a specific patient among all oral scan data and CT image data during implant surgery simulation. may be provided to the control unit 14 according to a user's request. At this time, the storage unit 12 stores the maxillary and mandibular images of individual patients, and provides the maxillary and mandibular images matching the oral scan data and CT image data of a specific patient to the control unit 14 according to a user's request. can do.

The control unit 14 controls each functional unit while establishing an implant placement plan through control by a computer program. The control unit 14 manages the screen information displayed on the screen through the output unit 18, and performs a simulation of placing a virtual implant structure in a dental image and generating a guide. The dental image refers to a two-dimensional, three-dimensional, or the like, multidimensional image in which a patient's tooth arrangement is generated for establishing an implant surgery plan. Various types of images such as X-ray, CT, MRI, panoramic image, oral scan image, image generated through reconstruction, and image obtained by matching multiple images can be used for implant surgery planning.

The control unit 14 according to an embodiment performs preliminary preparation for implant placement. For example, the control unit 14 registers a surgical patient, stores the registered patient's CT data and oral model data, matches the CT data and the oral model data, generates an arch line from the registration data, and creates a panoramic image using the arch line carry out Furthermore, the controller 14 segments the dental image into tooth areas for each tooth number so that the user can select a tooth number to be operated on from the generated dental image, for example, a panoramic image. At this time, the shape of each tooth number and the tooth number in the dental image may be displayed on the screen through the output unit 18 as a virtual object. The user may select a tooth number to be operated through the input unit 16 while checking the virtual object for each tooth number displayed on the screen.

After the tooth number to be operated on is selected from the dental image, the control unit 14 proceeds with setting the position and size of the crown model through simulation in the dental image, setting the position of the implant structure including the fixture, designing the guide shape, and outputting the final guide, and the operation plan to establish Hereinafter, among the functions of the control unit 14 described above, a function of automatically placing an anchor pin for fixing the guide for implant surgery in the guide will be mainly described. At this time, the control unit 14 automatically sets the anchor pin implantation information including the implantation area of the anchor pin, the number of implants, the implantation position, the implantation depth, the implantation direction and the implantation angle.

The control unit 14 according to an embodiment determines whether the anchor pin is implanted before the anchor pin is implanted. Determination of whether to place the anchor pin may be performed based on the remaining teeth and teeth selected for surgery planning. Determination of whether the anchor pin is placed For example, the control unit 14 checks the presence or absence of residual teeth for each tooth number in the divided tooth area. For immediate implantation after tooth extraction, the user can directly delete the tooth from the scan data when establishing a surgical plan. Therefore, as for the priority for defining the presence or absence of residual teeth, the tooth number selected by the user is the first priority. For example, if tooth #15 exists in the scan data and CT data, and the user selects tooth #15 as a surgical plan tooth, the control unit 14 defines tooth #15 as missing (no teeth). do.

The control unit 14 may determine whether the anchor pin is implanted according to whether the region without the remaining teeth is the posterior or anterior region. An embodiment of determining whether the anchor pin is implanted in the posterior region will be described later with reference to FIGS. 3 and 4 , and an embodiment of determining whether the anchor pin is implanted in the anterior region will be described later with reference to FIGS. 5 and 6 .

When it is determined that anchor pin implantation is necessary, the control unit 14 automatically sets anchor pin implantation information. The anchor pin implantation information may include at least one of an anchor pin implantation area, number of implants, an implantation position, an implantation depth, an implantation direction, and an implantation angle.

Automatic setting of anchor pin placement information For example, the control unit 14 classifies the dental image into maxilla and mandible according to the surgical area of the patient, determines the maxilla or mandible for designing a guide, and then determines the maxilla and mandible for each maxilla and mandible. ), set the basic direction of anchor pin placement. An embodiment of setting the basic direction of placement of the anchor pin will be described later with reference to FIGS. 8 and 9 .

When the anchor pin implantation area and the basic implantation direction are set, the control unit 14 may set the anchor pin implantation position. For example, set the placement position of the anchor pin to a position where there are no fixtures and adjacent teeth. An embodiment for setting the placement position of the anchor pin will be described later with reference to FIG. 10 .

The control unit 14 may set the placement position of the anchor pin in consideration of the surrounding implant structures and anatomical structures. For example, the placement position of the anchor pin is set so that the distance to the fixture, the distance to the adjacent teeth, the distance to the neural tube of the mandible, and the distance to the maxillary sinus of the maxilla maintain a preset distance, respectively. An embodiment of setting the distance between the anchor pin and the periphery will be described later with reference to FIGS. 11 and 12 .

When the implantation position of the anchor pin is set, the control unit 14 sets the implantation depth and the implantation direction and the implantation angle of the anchor pin. An example of setting an implantation depth of the anchor pin will be described later with reference to FIG. 13, and an example of setting an implantation direction and an implantation angle of the anchor pin will be described later with reference to FIGS. 14 and 15 .

The input unit 16 receives a user manipulation signal through a user interface. For example, the input unit 15 receives the selection of the tooth number to be operated on the tooth area for each tooth number displayed as a virtual graphic object on the screen through the output unit 16 through a user manipulation signal such as a mouse click. . The input unit 16 may receive a user manipulation signal for setting a reference for anchor pin implantation. For example, the number of teethless (see FIGS. 5 and 6), the distance between the anatomical structure and the implant structure and the anchor pin (refer to FIGS. 11 and 12), the placement of the anchor pin for determining whether or not the anchor pin is placed Depth (refer to FIG. 13) and the anchor pin implantation angle (refer to FIGS. 14 and 15) information is received from the user in advance.

After automatic anchor pin implantation by software, fine adjustment by the user can be performed if necessary through user confirmation. At this time, the input unit 16 receives a manual user operation signal. The user manipulation signal includes a mouse click operation in a dental image. The user's manual operation will be described later with reference to FIG. 16 .

The output unit 18 displays the dental image on the screen. For example, the output unit 18 displays a dental image for implanting a virtual fixture object and a simulation state in which the fixture is placed on the dental image. In addition, a guide including a guide hole and an anchor pin hole for fixing the guide can be displayed on the screen through automatic placement of the anchor pin using software. In addition, a dental image screen for user manual operation may be displayed.

2 is a diagram illustrating a dental image screen for explaining an example of dividing a tooth region according to an embodiment of the present invention.

Referring to FIG. 2 , the design device divides a tooth region in a dental image in a preparation step. In this case, in a dental image, for example, a panoramic image, a tooth region may be automatically divided for each tooth number. For example, the design device sets a boundary line or boundary point as a crown generation standard in CT data or oral scan data in which an arch line is generated. Then, the position and size ratio of the crown are calculated according to the set boundary line or boundary point, and the position of the fixture is calculated to have the same reference axis as the calculated crown position. Then, based on the position calculation result, the panoramic image is automatically divided into the tooth region in the form where the crown and the fixture are located. Furthermore, the design device may select a tooth number to be operated by a user manipulation from the dental image divided into tooth regions. For example, a user may select a predetermined tooth number through a mouse click.

3 and 4 are views illustrating dental images showing an example of determining whether to place an anchor pin in a molar part according to an embodiment of the present invention.

Referring to FIGS. 3 and 4 , the design device implants anchor pins in the posterior region in succession in a preset number, for example, when there are no three teeth (No. 7, No. 6, No. 5 tooth). For example, in the case of the right side of the maxilla in FIG. 3, anchor pins are implanted when teeth 17, 16, and 15 are absent in succession. In the case of the left side of the maxilla of Fig. 4, anchor pins are implanted when teeth 27, 26, and 25 are absent in a row. At this time, it is possible to set the conditions so that the anchor pin can be implanted in the case where there are no consecutively preset number of teeth including the 7th tooth on the left or right side.

5 and 6 are views illustrating dental images showing an example of determining whether to place an anchor pin on an anterior part according to an embodiment of the present invention.

5 and 6, the design device has 8 teeth (No. 4, No. 3, No. 2, No. 1, 1 No., No. 2, No. 3, No. 4 teeth), anchor pins are placed. For example, in the case of the maxilla, anchor pins are placed in the absence of 8 teeth (teeth 14, 13, 12, 11, 21, 22, 23, and 24). In the case of the mandible, anchor pins are placed in the absence of 8 teeth (No. 44, No. 43, No. 42, No. 41, No. 31, No. 32, No. 33, No. 34) of teeth.

7 is a view illustrating a dental image showing an anchor pin basic implantation area of a toothless patient according to an embodiment of the present invention.

Referring to FIG. 7 , as described above with reference to FIGS. 3 to 6 , in the case of a toothless patient, one anchor pin is placed on each posterior part (region A and C in FIG. 7), and 1 in the anterior part. Anchor pins are installed (region B in FIG. 7), and three anchor pins are installed. That is, when all teeth do not exist for each area A, B, and C, anchor pins are respectively placed in the corresponding areas.

If it does not correspond to the logic of determining whether to implant anchor pins for the posterior part described above with reference to FIGS. 3 and 4 or the anterior part described above with reference to FIGS. 5 and 6, it can be determined whether the anchor pin is implanted as follows. have. That is, with reference to FIGS. 3 and 4, the logic of determining whether to implant the anchor pin of the posterior part, and the logic of setting whether the anchor pin of the anterior part described above with reference to FIGS. 5 and 6 are first priority, and does not correspond to this. Otherwise, anchor pins are placed when there are no 8 teeth in a row. For example, if there are no teeth 16, 15, 14, 13, 12, 11, 21, or 22, anchor pins are placed. The number of 8 teeth for determining whether the anchor pin is implanted in FIGS. 5 and 6 can be changed by a user setting. For example, in the case of defining 6 teeth, anchor pins are placed when there are no 6 teeth in a row from the 3rd tooth on one side to the 3rd tooth on the opposite side in the anterior region.

8 and 9 are diagrams showing a dental image showing an example of setting an anchor pin implantation basic direction according to an embodiment of the present invention.

Referring to FIGS. 8 and 9 , dental images are classified into maxilla ( FIG. 8 ) and mandible ( FIG. 9 ) according to the surgical area of the patient, and a basic direction in which anchor pins are placed is set for each maxilla and mandible. For example, as shown in FIG. 8 , when a guide is designed by establishing an implant surgery plan in the maxilla, the anchor pin is installed in the palatal direction 810 based on the maxillary arch line 800 . Set the basic direction for placement. As shown in FIG. 9, when designing a guide by establishing a plan for implant surgery in the mandible, the basic direction of anchor pin placement is set so that the anchor pin is placed in the buccal direction 910 based on the jaw line 900. do.

10 is a view showing a dental image showing the placement position setting of the anchor pin according to an embodiment of the present invention.

Referring to FIG. 10 , the design apparatus sets an implantation position of an implant structure including a fixture in a dental image for guide design and reflects the implantation information to generate the guide area 1000 . The dental image may be oral scan data as shown in FIG. 10 . The guide area 1000 may be expressed as a 3D image or a 2D image. The design device creates a guide hole at the location of the perforation for drilling the patient's alveolar bone based on the guide area (1000). A fixture with an appropriate length and height is placed in the perforation formed according to the guide of the guide hole. The position setting of the implant structure including the fixture can be set by the user directly, and after automatically setting the position using an algorithm of the software, the user can modify the position and set the final position.

When the anchor pin placement area and the basic placement direction are set, the design device sets the anchor pin placement position. For example, set the placement position of the anchor pin to a position where there are no fixtures and adjacent teeth. The tooth number selected according to the surgical plan can be divided into a tooth number in which the fixture 1010 is placed and a tooth number in which only the crown 1020 design is performed. When the fixture 1010 is implanted, a collision with the anchor pin 1030 may occur or there may be restrictions in implantation depth and position. Therefore, as shown in FIG. 10 , the anchor pin 1030 is implanted in an area where the crown 1020 and the fixture 1010 are not placed in a state where there are no tooth numbers or teeth in which only the crown 1020 design proceeds.

When a natural tooth exists in an adjacent tooth of a tooth number in which the fixture is not placed, the placement position of the anchor pin 1030 may be set to be fixed to the opposite position or to the end of the guide 1000 . For example, if tooth 4 exists and teeth 5, 6, and 7 are selected as surgical teeth and fixtures are placed on teeth 6 and 7, the fixing power is secured with tooth 4 in the area of tooth 5. Therefore, the anchor pin 1030 is placed behind the 7th tooth or between the 6th and 7th teeth.

11 and 12 are diagrams showing an example of setting the placement position of the anchor pin in consideration of the surrounding structures according to an embodiment of the present invention.

11 and 12 , the design apparatus may set a distance between the object and the anchor pin in consideration of the patient's anatomical structure and implant structure. For example, as shown in FIG. 11, the distance between the fixture 1100 and the anchor pin 1110 is set to maintain a preset distance (for example, at least 3 mm) to set the placement position of the anchor pin 1110 . As another example, as shown in Fig. 12, the distance between the adjacent teeth 1200 and the anchor pin 1110 is set to a predetermined distance (eg, at least 1.5 mm) to maintain the placement position of the anchor pin 1110. In addition, when the neural tube of the mandible and the maxillary sinus are located, the placement position of the anchor pin 1110 may be set to maintain a preset distance (eg, at least 3 mm) from each object. In this case, since the distance between the anatomical structure and the implant structure can be selected differently according to the user, the distance can be set in the user setting. Furthermore, when setting the standard position information of the anatomically commonly used anchor pin 1110, and setting reference information for the placement position of the anchor pin 1110 (eg, the distance between the anatomical structure and the implant structure) , it is possible to provide convenience to the user by displaying an alarm or warning message on the screen so that the user can recognize the corresponding content when the standard set by the user exceeds or falls short of the preset range from the standard.

13 is a view showing an example of setting the implantation depth of the anchor pin according to an embodiment of the present invention.

Referring to FIG. 13 , when the implantation position of the anchor pin 1300 is set, the design device sets the implantation depth of the anchor pin 1300 . For example, as shown in FIG. 13, the implantation depth of the anchor pin 1300 is set so that the implantation depth of the anchor pin 1300 is a preset distance (eg, 5 mm) downward to the patient's alveolar bone. set Since the implantation depth of the anchor pin 1300 can be differently selected according to the user, the implantation depth value can be set in the user setting. Furthermore, the standard depth information of the anatomically commonly used anchor pin 1300 is set, and when the reference information for the implantation depth of the anchor pin 1300 is set, the standard set by the user exceeds the preset range from the standard or In case the content is not met, it is possible to provide convenience to the user by displaying an alarm or warning message on the screen so that the user can recognize the corresponding content.

14 to 15 are views illustrating dental images showing the setting direction and angle of the anchor pin according to an embodiment of the present invention.

Referring to FIG. 14 , the implantation direction and implantation angle of the anchor pin 1400 viewed from the cross image of the anterior and posterior regions is a cross section 1420 where the reference axis point 1410 of the anchor pin 1400 is located. The anchor pin is implanted so that a preset angle α is maintained between the reference axis 1440 of the fixture 1430 and the mounting direction of the anchor pin 1400 by projecting the fixture 1430 located at the shortest distance to the . α may be, for example, 30 degrees.

Referring to FIG. 15 , in the case of the posterior region, the implantation direction and the implantation angle of the anchor pin 1500 viewed from the axial image are parallel to the reference axis point 1510 of the anchor pin 1500 located. The anchor pin 1500 is implanted in the direction of the posterior part from the anterior part so that the angle β set in advance is maintained between the cross section 1520 and the implantation direction of the anchor pin 1500 . β may be, for example, 30 degrees.

In the case of the anterior region, the implantation direction and the implantation angle of the anchor pin 1500 viewed from the axial image are parallel to the section 1520 and the anchor where the reference axis point 1510 of the anchor pin 1500 is located. The anchor pin 1500 is implanted so that the insertion direction of the pin 1500 is vertical. On the other hand, since the installation direction and the installation angle of the anchor pin 1500 can be selected differently depending on the user, the angle value can be set in the user setting. Furthermore, the standard implantation direction and implantation angle information of the anatomically commonly used anchor pin 1500 are set, and when the reference information for the implantation direction and implantation angle of the anchor pin 1500 is set, the standard set by the user is the standard Convenience can be provided to the user by displaying an alarm or warning message on the screen so that the user can recognize the content when it exceeds or falls short of a preset range.

16 is a view showing an example of manual fine adjustment of an anchor pin according to an embodiment of the present invention.

Referring to FIG. 16 , after automatic placement of anchor pins using software logic, additional anchor pin placement and fine adjustment are possible through a user's manual operation. For example, if the user's manual implantation is required because it does not correspond to the automatic anchor pin placement logic, or if a user's manual implantation is additionally desired, the anchor pin can be manually implanted in a 2-click method at the position of the 2D cross-section where the anchor pin is to be placed. . When the anchor pin reference point 1610 is selected as shown in (a) of FIG. 16, and the anchor pin direction determination point 1630 is additionally selected by the user as shown in FIG. 16 (b), The end of the anchor pin is positioned here, and finally the position and direction of the anchor pin 1640 are set as shown in FIG. 16 (c). An anchor pin placement direction guide line 1620 connecting the anchor pin reference point 1610 and the anchor pin direction determination point 1630 may be displayed together on the dental image. It is possible to additionally adjust the user's fine adjustment of the implantation position, implantation direction, etc. for the implanted anchor pin 1640 . Furthermore, when the anchor pin 1640 is fine-tuned, when it exceeds or falls short of a preset range from an anatomically commonly used standard, the user by displaying an alarm or warning message on the screen so that the user can recognize the content. can provide convenience to For example, if it is out of a preset range, a message to confirm whether to continue with the modified content may be displayed to notify the user of this.

17 is a view showing a final surgical guide including an anchor pin hole according to an embodiment of the present invention.

Referring to FIG. 17 , a guide hole 1710 and an anchor pin hole 1720 for fixing the guide 1700 are formed in the finally generated guide 1700 . An anchor pin having the automatically set implantation information is implanted in the anchor pin hole 1720 .

18 is a view showing the flow of an anchor pin implantation method according to an embodiment of the present invention.

Referring to FIG. 18 , the design apparatus divides the patient's dental image into a plurality of tooth areas ( S1810 ), and selects a tooth number to be operated from the divided tooth areas ( S1820 ).

Then, the design device determines whether the anchor pin is placed on the basis of the remaining teeth and the selected teeth in the tooth area (S1830). In the anchor pin placement determination step (S1830), the design device may determine the presence or absence of residual teeth for each tooth number, and when determining the presence or absence of residual teeth, the selected tooth may be determined as having no residual teeth as the first priority. In addition, it is possible to determine whether the anchor pin is implanted according to whether the anchor pin implantation area is the posterior part or the anterior part. For example, if the first condition is that there is no consecutively preset number of teeth in the posterior region, an anchor pin is implanted, and a preset number of teeth continuously from one tooth to the opposite tooth based on the midline in the anterior region. If the second condition without If the first condition and the second condition do not correspond to the third condition in which there are no teeth of a preset number in succession, the anchor pin may be implanted.

When it is determined that anchor pin placement is necessary, the design device automatically sets anchor pin placement information (S1840). The anchor pin implantation information may include at least one of an anchor pin implantation area, number of implants, an implantation position, an implantation depth, an implantation direction, and an implantation angle.

Anchor pin implantation information automatic setting process (S1840) may consist of a basic anchor pin implantation direction setting step, an anchor pin implantation position setting step, an anchor pin implantation depth setting step, an anchor pin placement direction and an implantation angle setting step. have.

In the automatic setting of the anchor pin placement information step (S1840), the design device may determine the upper jaw or the mandible for designing the guide, and then set the basic direction of anchor pin placement based on the maxilla and mandibular arch lines. For example, when designing a guide by establishing an implant surgery plan for the maxilla, the basic direction of anchor pin placement is set so that the anchor pin is placed in the palatal direction based on the maxillary arch line. When designing a guide by establishing an implant surgery plan for the mandible, set the basic direction of anchor pin placement so that the anchor pin is placed in the buccal direction based on the arch line.

In the automatic setting of the anchor pin implantation information step (S1840), the design device may set the anchor pin implantation position to a position where there are no fixtures and adjacent teeth. For example, the design device sets the anchor pin placement position to an area where a crown and a fixture are not placed in a state where there are no tooth numbers or teeth in which only crown design is performed. If there is a natural tooth in the adjacent tooth of the tooth number where the fixture is not placed, set the placement position of the anchor pin so that it can be fixed at the opposite position or at the end of the guide.

In the automatic setting of the anchor pin implantation information step (S1840), the design device may set the distance between the corresponding object and the anchor pin by reflecting the patient's implant structure and anatomical structure. For example, to set the placement position of the anchor pin to maintain a preset distance with the implant structure including the fixture. Set the placement position of the anchor pin so as to maintain a preset distance from each anatomical structure including the neural tube and the maxillary sinus. When the implantation position of the anchor pin is set, the implantation depth of the anchor pin may be set to be located at a preset distance downward to the alveolar bone.

In the automatic setting step (S1840) of the anchor pin implantation information, the design device may set the direction and angle of the anchor pin. For example, in the cross image of the anterior region and the posterior region, the anchor pin is implanted so that a preset first angle is maintained between the reference axis of the fixture and the anchor pin placement direction. As another example, in the axial image of the posterior region, the anchor pin is implanted so that the second angle preset is maintained between the parallel section where the reference axis point of the anchor pin is located and the direction of the anchor pin implantation. As another example, in the axial image of the anterior region, the anchor pin is implanted so that the parallel section where the reference axis point of the anchor pin is located and the direction of the anchor pin installation are perpendicular to each other.

After the automatic placement of the anchor pin, the design device may manually implant the anchor pin (S1850). For example, after the anchor pin is automatically implanted, a user manipulation signal is received for the automatically implanted anchor pin to perform fine adjustment. When automatic placement of anchor pins is not possible, manually place anchor pins according to user manipulation signals.

So far, the present invention has been looked at focusing on the embodiments thereof. Those of ordinary skill in the art to which the present invention pertains will understand that the present invention can be implemented in modified forms without departing from the essential characteristics of the present invention. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the present invention is indicated in the claims rather than the foregoing description, and all differences within the scope equivalent thereto should be construed as being included in the present invention.

Claims (16)

In the anchor pin placement method using the guide design device for implant surgery, the guide design device for implant surgery
dividing the patient's dental image into a plurality of tooth regions;
selecting a tooth number to be operated on in the divided tooth area;
Determining whether the anchor pin is placed on the basis of the remaining teeth and the selected teeth in the tooth area;
automatically setting anchor pin placement information when it is determined that anchor pin implantation is necessary;
automatically placing the anchor pin in the guide according to the automatically set anchor pin placement information; and
Displaying on the screen a guide including an anchor pin hole in which the anchor pin is to be implanted;
Anchor pin placement method comprising a. The method of claim 1, wherein the anchor pin placement information is
Anchor pin implantation method, characterized in that it comprises at least one of an implantation area of an anchor pin, an implantation number, an implantation position, an implantation depth, an implantation direction, and an implantation angle. In the anchor pin placement method using the guide design device for implant surgery, the guide design device for implant surgery
dividing the patient's dental image into a plurality of tooth regions;
selecting a tooth number to be operated on in the divided tooth area;
Determining whether the anchor pin is placed on the basis of the remaining teeth and the selected teeth in the tooth area; and
automatically setting anchor pin placement information when it is determined that anchor pin implantation is necessary; including,
The step of determining whether the anchor pin is installed is
Checking the presence or absence of residual teeth by tooth number;
Determining the selected teeth as the first priority when checking the presence or absence of residual teeth as no remaining teeth; and
Determining whether the anchor pin is implanted according to whether the anchor pin implantation area is the posterior part or the anterior part;
Anchor pin placement method comprising a. According to claim 3, wherein the step of determining whether the anchor pin is implanted according to whether the posterior part or the anterior part comprises:
Placing an anchor pin when the first condition in which there are no teeth in a preset number consecutively in the posterior region is met;
In the anterior region, based on the midline, from one tooth to the opposite tooth in succession to the second condition in which there is no preset number of teeth, placing an anchor pin; and
If the first condition and the second condition do not correspond to the third condition without a preset number of teeth consecutively, the step of implanting an anchor pin;
Anchor pin placement method comprising a. In the anchor pin placement method using the guide design device for implant surgery, the guide design device for implant surgery
dividing the patient's dental image into a plurality of tooth regions;
selecting a tooth number to be operated on in the divided tooth area;
Determining whether the anchor pin is placed on the basis of the remaining teeth and the selected teeth in the tooth area; and
automatically setting anchor pin placement information when it is determined that anchor pin implantation is necessary; including,
The steps to automatically set the anchor pin placement information are:
setting a basic direction for anchoring the anchor pin;
Setting an anchoring position of the anchor pin when the basic direction of the anchor pin is set;
Setting the implantation depth of the anchor pin when the placement position of the anchor pin is set; and
When the implantation position and implantation depth of the anchor pin is determined, setting the anchor pin implantation direction and implantation angle;
Anchor pin placement method comprising a. The method of claim 1, wherein the step of automatically setting the placement information of the anchor pin
When the guide is designed by establishing an implant surgery plan in the maxilla when setting the basic direction of anchor pin placement, setting the anchor pin placement basic direction so that the anchor pin is placed in the palatal direction based on the maxillary arch line; and
When designing a guide by establishing an implant surgery plan in the mandible when setting the basic direction for anchor pin placement, setting the anchor pin placement basic direction so that the anchor pin is placed in the buccal direction based on the jaw line;
Anchor pin placement method comprising a. In the anchor pin placement method using the guide design device for implant surgery, the guide design device for implant surgery
dividing the patient's dental image into a plurality of tooth regions;
selecting a tooth number to be operated on in the divided tooth area;
Determining whether the anchor pin is placed on the basis of the remaining teeth and the selected teeth in the tooth area; and
automatically setting anchor pin implantation information when it is determined that anchor pin implantation is necessary; including,
The steps to automatically set the anchor pin placement information are:
setting an anchor pin implantation position to an area where crowns and fixtures are not placed in a state where there are no tooth numbers or teeth in progress only for crown design; and
When a natural tooth exists in an adjacent tooth of a tooth number in which the fixture is not placed, setting the placement position of the anchor pin so that it can be fixed to the opposite position or to the end of the guide;
Anchor pin placement method comprising a. The method of claim 1, wherein the step of automatically setting the placement information of the anchor pin
Setting an implantation position of the anchor pin to maintain a preset distance with the implant structure including the fixture;
Setting the placement position of the anchor pin to maintain a preset distance from each anatomical structure including the neural tube and the maxillary sinus: And
When the implantation position of the anchor pin is set, setting the implantation depth of the anchor pin to be located at a predetermined distance downward to the alveolar bone;
Anchor pin placement method comprising a. In the anchor pin placement method using the guide design device for implant surgery, the guide design device for implant surgery
dividing the patient's dental image into a plurality of tooth regions;
selecting a tooth number to be operated on in the divided tooth area;
Determining whether the anchor pin is placed on the basis of the remaining teeth and the selected teeth in the tooth area; and
automatically setting anchor pin placement information when it is determined that anchor pin implantation is necessary; including,
The steps to automatically set the anchor pin placement information are:
implanting an anchor pin so that a preset first angle is maintained between the reference axis of the fixture and the anchor pin placement direction in the cross image of the anterior and posterior regions;
Placing an anchor pin so that a second angle preset with a parallel section where the reference axis point of the anchor pin is located in the axial image of the posterior region and the direction of placement of the anchor pin is maintained in advance; and
Placing an anchor pin so that a parallel section where the reference axis point of the anchor pin is located in the axial image of the anterior region and the insertion direction of the anchor pin are perpendicular to each other;
Anchor pin placement method comprising a. In the anchor pin placement method using the guide design device for implant surgery, the guide design device for implant surgery
dividing the patient's dental image into a plurality of tooth regions;
selecting a tooth number to be operated on in the divided tooth area;
Determining whether the anchor pin is placed on the basis of the remaining teeth and the selected teeth in the tooth area;
automatically setting anchor pin placement information when it is determined that anchor pin implantation is necessary;
performing fine adjustment by receiving a user manipulation signal for the automatically implanted anchor pin after the automatic anchor pin implantation; and
Manually implanting the anchor pin according to a user manipulation signal when automatic placement of the anchor pin is not possible;
Anchor pin placement method comprising a. In the anchor pin placement method using the guide design device for implant surgery, the guide design device for implant surgery
dividing the patient's dental image into a plurality of tooth regions;
selecting a tooth number to be operated on in the divided tooth area;
Determining whether the anchor pin is placed on the basis of the remaining teeth and the selected teeth in the tooth area; and
automatically setting anchor pin placement information when it is determined that anchor pin implantation is necessary; including,
For the automatic setting of anchor pin placement information, anatomical standard information is set, and when the user sets anchor pin placement reference information, if the reference information is out of a preset range from the standard information, an alarm or displaying a warning message; and
Displaying an alarm or warning message on the screen to notify the user when the user fine-tuning after the automatic setting of the anchor pin implantation information is out of a preset range from the standard information;
Anchor pin implantation method, characterized in that it further comprises at least one of. a data acquisition unit for acquiring a dental image;
A control unit for automatically placing an anchor pin for fixing the guide to the guide when designing a guide for implant surgery targeting the acquired dental image; and
An output unit for displaying a dental image including an anchor pin implanted in the guide on the screen;
Guide design device for implant surgery, characterized in that it comprises a. 13. The method of claim 12, wherein the control unit
For implant surgery, characterized in that, based on the remaining teeth and selected teeth in a plurality of divided tooth areas, anchor pin placement is determined for each posterior and anterior portions, and when it is determined that anchor pin placement is necessary, information on the placement of anchor pins is automatically set. Guide design device. 13. The method of claim 12, wherein the control unit
After deciding the maxilla or mandible to design the guide, set the basic direction of anchor pin placement based on the maxillary and mandibular arch lines,
Set the placement position of the anchor pin to a position where there are no fixtures and adjacent teeth,
Guide design device for implant surgery, characterized in that it sets the anchor pin distance between the patient's implant structure and anatomical structures. 13. The method of claim 12, wherein the control unit
In the cross image of the anterior and posterior regions, the anchor pin is implanted so that a preset first angle is maintained between the reference axis of the fixture and the direction of placement of the anchor pin,
In the axial image of the posterior region, the anchor pin is placed so that the second angle preset is maintained between the parallel section where the reference axis point of the anchor pin is located and the direction of placement of the anchor pin,
Guide design device for implant surgery, characterized in that the anchor pin is placed so that the parallel section where the reference axis point of the anchor pin is located in the axial image of the anterior region and the direction of the anchor pin are perpendicular to each other. The method of claim 12, wherein the guide design device for implant surgery is
an input unit receiving a user manipulation signal; further comprising,
the control unit
After automatic placement of anchor pins, a user manipulation signal is received from the input unit to fine-tune the anchor pins that are automatically placed after anchor pins are automatically placed. Guide design device for implant surgery, characterized in that.

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