KR102760257B1 - METHOD AND APPARATUS FOR designing and implementing simulator for implant - Google Patents

Abstract

The present invention provides a method for designing and manufacturing an implant placement simulator. The method may include a step of extracting an anatomical structure based on a CBCT (Cone Beam CT) image of a patient, a step of extracting an opening degree based on a 3D scan image of a face of the patient with the mouth open, and a step of modeling a simulator for implant placement based on the anatomical structure and the opening degree.

Description

{METHOD AND APPARATUS FOR designing and implementing simulator for implant}

The present disclosure relates to simulator modeling. More specifically, the present disclosure relates to a method for designing and manufacturing an implant placement simulator and a device thereof.

Before an actual doctor performs a dental implant procedure, a virtual simulation is used to establish an implant procedure plan. For example, an artificial tooth suitable for the patient is selected, and a design process is conducted to virtually place the artificial tooth in the target tooth position. The implant procedure plan includes determining the location and type of implant structures, including fixtures, for each target tooth to be operated on. In order to determine the location and type of these implant structures and establish a procedure plan, such as drilling, a customized implant simulator for each patient is required, and an implant placement model that can more accurately simulate the patient's tooth structure and condition is also required.

Republic of Korea registered patent no. 2289610

The purpose of the embodiments disclosed in the present disclosure is to provide a method for designing and manufacturing a simulator for implant placement.

The purpose of the embodiments disclosed in the present disclosure is to provide a simulator device that performs a method of designing and manufacturing a simulator for implant placement.

The problems to be solved by the present disclosure are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

According to one aspect of the present disclosure for achieving the above-described technical task, a method for designing and manufacturing an implant implantation simulator performed by a simulator device for implant implantation includes a step of extracting an anatomical structure based on a CBCT (Cone Beam CT) image of a patient, a step of extracting an opening degree based on a 3D scan image of a face of the patient with an open mouth, and a step of modeling a simulator for implant implantation based on the anatomical structure and the opening degree, wherein the anatomical structure includes at least one of an maxilla, a mandible, skin, a maxillary sinus, an inferior alveolar nerve canal, teeth, or a tongue, and wherein the modeling of the simulator for implant implantation can be performed by calculating an intensity for each region of the maxilla and the mandible extracted from the anatomical structure and reflecting the intensity for each region of the maxilla and the mandible.

In addition, each of the upper jaw and the lower jaw is divided into a first region from the incisors to the canines, a second region from the canines to the premolars, and a third region from the premolars to the molars, and the strength of the alveolar bone located corresponding to each of the first to third regions can be calculated.

In addition, the modeling of the simulator for implant placement can calculate the pattern density based on the strength of the alveolar bone located corresponding to each of the first to third regions, and reflect the calculated pattern density by designing it for each of the first to third regions.

In addition, the data for the simulator for the modeled implant placement is used as 3D printing data, and the method may further include a step of manufacturing the simulator for the modeled implant placement using the 3D printing data based on the properties of the anatomical structure.

In addition, the simulator for implant placement of the modeled implant may further include a step of manufacturing a structure corresponding to the skin among the anatomical structures using silicone casting.

In addition, a step of scanning the results of a simulation performed based on the simulator for the modeled implant placement and evaluating whether they match with the pre-planned implant surgery data may be further included.

In addition, the modeling of the simulator for implant placement can further reflect the location of teeth and the occlusal surface of teeth by extracting them based on the 3D scan image of the patient's face with the mouth open.

In addition, the simulator for implant placement is modeled by calculating a state in which a tooth in an actual location requiring implant placement or a tooth in a training target location for simulation is removed, and an implant placement simulation can be provided based on a simulator in which a tooth in the actual location or a tooth in the training target location is removed.

In addition, a simulator device for performing an implant placement simulator design and manufacturing method according to another aspect of the present disclosure includes an information extraction unit for extracting an anatomical structure based on a CBCT (Cone Beam CT) image of a patient and extracting a degree of opening based on a 3D scan image of a face of the patient with the mouth open, and a modeling unit for modeling a simulator for implant placement based on the anatomical structure and the degree of opening, wherein the anatomical structure includes at least one of the maxilla, the mandible, skin, the maxillary sinus, the inferior alveolar nerve canal, teeth, or the tongue, wherein the modeling unit, when performing modeling of the simulator for implant placement, can calculate an intensity for each region of the maxilla and the mandible extracted from the anatomical structure, and model by reflecting the intensity for each region of the maxilla and the mandible.

In addition, a computer program stored in a computer-readable recording medium for execution to implement the present disclosure may be further provided.

In addition, a computer-readable recording medium recording a computer program for executing a method for implementing the present disclosure may be further provided.

According to the above-described problem solving means of the present disclosure, a patient-tailored simulator for educational simulation can be provided. That is, implant placement modeling for a specific patient is possible based on medical data for the specific patient. In addition, since the positions of teeth for training can be set in various ways along with the positions of teeth to be actually placed in the patient, it is possible to provide simulations for various implant placement cases that can occur in reality.

In addition, according to the aforementioned problem solving means of the present disclosure, more accurate simulation education can be provided by implementing a simulator that reflects various states of teeth for each patient by considering not only images of a patient with the mouth closed but also images of a patient with the mouth open.

In addition, according to the aforementioned problem solving means of the present disclosure, by modeling the implant placement simulator based on the strength of each region of the alveolar bone and reflecting the pattern density differently according to the strength of each region of the alveolar bone in the implant placement simulator, a simulation environment identical to that of an actual patient can be provided to increase realism.

In addition, according to the aforementioned problem solving means of the present disclosure, it is possible to measure the accuracy of implant placement by evaluating whether the procedure was performed well after implant placement.

The effects of the present disclosure are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description below.

FIG. 1 is a block diagram schematically illustrating a simulator device for implant placement according to one embodiment of the present invention.
FIG. 2 is a flowchart schematically illustrating a method for designing and manufacturing an implant placement simulator according to one embodiment of the present invention.
FIG. 3 is a drawing showing an example of a medical image of a patient requiring implant placement according to one embodiment of the present invention.
FIG. 4 is a diagram showing an example of a simulator modeling process according to one embodiment of the present invention.
FIG. 5 is a drawing for explaining an example of dividing the areas of alveolar bones positioned corresponding to each of the upper and lower jaws according to one embodiment of the present invention.
FIGS. 6 to 8 are drawings for explaining an example of a process for designing pattern density based on the intensity of each region of the upper and lower jaws according to one embodiment of the present invention.
FIG. 9 is a drawing showing an example of 3D printing and silicone casting a simulator for implant placement according to one embodiment of the present invention.
FIG. 10 is a drawing showing an example of a method for evaluating a model that reflects a pattern density designed based on the strength of each region of the alveolar bone according to one embodiment of the present invention.
FIG. 11 is a drawing showing an example of a method for performing evaluation of implant placement simulation according to one embodiment of the present invention.

The advantages and features of the present invention, and the methods for achieving them, will become clear with reference to the embodiments described in detail below together 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 the present embodiments are provided only to make the disclosure of the present invention complete and to fully inform a person skilled in the art of the scope of the present invention, and the present invention is defined only by the scope of the claims.

The terminology used herein is for the purpose of describing embodiments only and is not intended to limit the present invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. The terms "comprises" and/or "comprising" as used in the specification do not exclude the presence or addition of one or more other components in addition to the mentioned components. Like reference numerals refer to like components throughout the specification, and "and/or" includes each and every combination of one or more of the mentioned components. Although "first", "second", etc. are used to describe various components, it is to be understood that these components are not limited by these terms. These terms are merely used to distinguish one component from another. Therefore, it should be understood that a first component mentioned below may also be a second component within the technical spirit of the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used in this specification may be used with the meaning commonly understood by those skilled in the art to which the present invention belongs. In addition, terms defined in commonly used dictionaries shall not be ideally or excessively interpreted unless explicitly specifically defined.

Throughout this disclosure, the same reference numerals refer to the same components. This disclosure does not describe all elements of the embodiments, and any content that is general in the technical field to which this disclosure belongs or that overlaps between the embodiments is omitted. The terms ‘part, module, element, block’ used in the specification can be implemented in software or hardware, and according to the embodiments, a plurality of ‘parts, modules, elements, blocks’ can be implemented as a single component, or a single ‘part, module, element, block’ can include a plurality of components.

Throughout the specification, when a part is said to be "connected" to another part, this includes not only the case where it is directly connected, but also the case where it is indirectly connected, and an indirect connection includes a connection via a wireless communication network. Also, when a part is said to "include" a component, this does not mean that it excludes other components, but rather that it can include other components, unless specifically stated otherwise.

Throughout the specification, when it is said that an element is "on" another element, this includes not only cases where the element is in contact with the other element, but also cases where there is another element between the two elements.

The identification codes in each step are used for convenience of explanation and do not describe the order of each step. Each step may be performed in a different order than specified unless the context clearly indicates a specific order.

The operating principle and embodiments of the present disclosure are described below with reference to the attached drawings.

FIG. 1 is a block diagram schematically illustrating a simulator device for implant placement according to one embodiment of the present invention.

Referring to FIG. 1, a simulator device (100) for implant placement according to one embodiment of the present invention is a device that performs a method for designing and manufacturing an implant placement simulator, and can process signals, data, information, etc. input or output through components to be described later, or provide or process appropriate information or functions to a user through various application programs running on the device (100). For example, a simulator device (100) for implant placement according to one embodiment of the present invention may include all of a computer, a server device, and a portable terminal, or may be in the form of one of them.

Here, the computer may include, for example, a notebook, desktop, laptop, tablet PC, slate PC, etc. equipped with a web browser.

The above server device is a server that processes information by communicating with an external device, and may include an application server, a computing server, a database server, a file server, a game server, a mail server, a proxy server, and a web server.

The above portable terminal may include, for example, all kinds of handheld-based wireless communication devices such as a PCS (Personal Communication System), GSM (Global System for Mobile communications), PDC (Personal Digital Cellular), PHS (Personal Handyphone System), PDA (Personal Digital Assistant), IMT (International Mobile Telecommunication)-2000, CDMA (Code Division Multiple Access)-2000, W-CDMA (W-Code Division Multiple Access), WiBro (Wireless Broadband Internet) terminal, a smart phone, and a wearable device such as a watch, a ring, a bracelet, an anklet, a necklace, glasses, contact lenses, or a head-mounted-device (HMD).

In one embodiment, a simulator device (100) for implant placement may include an information extraction unit (110), a modeling unit (120), a 3D printing unit (130), a silicon casting unit (140), and an evaluation unit (150). The components illustrated in FIG. 1 are not essential for implementing the device (100) according to the present disclosure, and thus, the device (100) described in this specification may have more or fewer components than the components illustrated in FIG. 1.

The information extraction unit (110) can obtain a medical image of a patient, and extract various information (e.g., anatomical structure, maximum opening, position of teeth, number of missing teeth, occlusal surface condition of teeth, etc.) necessary for implant placement based on the medical image. For example, the medical image of the patient is a medical image of a patient subject to implant placement, and may include a medical image obtained with the patient's mouth closed and a medical image obtained with the patient's mouth open. In addition, the medical image of the patient may be in a two-dimensional or three-dimensional form, and may include a CT image, a scan image, etc. obtained through a diagnostic device such as a CBCT (Cone Beam CT), an intra-oral scanner, or a 3D scanner.

In one embodiment, the information extraction unit (110) may extract an anatomical structure based on a CT image of a patient. Here, the CT image may be a CBCT image acquired through a CBCT device, and for example, may be a CBCT image acquired by photographing a facial area while the patient has their mouth closed. That is, the information extraction unit (110) may extract an anatomical structure including at least one of the maxilla, mandible, skin, maxillary sinus, inferior alveolar nerve canal, teeth, or tongue that need to be considered when implanting based on the CBCT image of the patient.

In addition, as an embodiment, the information extraction unit (110) can extract the degree of mouth opening based on the 3D scan image of the patient. Here, the 3D scan image can be a 3D scan image acquired through an intraoral scanner or a 3D scanner, and for example, can be a 3D scan image acquired by scanning the facial area while the patient opens his/her mouth. At this time, in order to determine the degree of mouth opening of the patient, the information extraction unit (110) can acquire a 3D scan image acquired by scanning the facial area while the patient opens his/her mouth as much as possible, and extract the maximum degree of mouth opening of the patient based on this.

The modeling unit (120) can model a simulator for implant placement based on information extracted from a patient's medical image (e.g., CBCT image, 3D scan image, scan image acquired by an intraoral scanner, etc.), i.e., anatomical structure and degree of opening.

As an example, the modeling unit (120) can calculate the intensity of each region of the maxilla and mandible extracted from the anatomical structure of the CBCT image, and model a simulator for implant placement by reflecting the calculated intensity of each region of the maxilla and mandible. More specifically, since the alveolar bones corresponding to the maxilla and mandible can have different intensities for each region, the simulator for implant placement can be modeled by reflecting the intensity of each region of the alveolar bones.

For example, the maxilla and the mandible can each be divided into a first region from the incisors to the canines, a second region from the canines to the premolars, and a third region from the premolars to the molars, and at this time, the alveolar bones positioned corresponding to each of the divided first to third regions can have different strengths. In this case, the modeling unit (120) can calculate the strength of the alveolar bones positioned corresponding to each of the first to third regions for each region, and model a simulator for implant placement based on the strength of the alveolar bones for each of the first to third regions.

In addition, as an example, the modeling unit (120) may calculate a pattern density based on the strength of the alveolar bone located corresponding to each of the first to third regions, and design the calculated pattern density for each of the first to third regions to reflect it in the simulator modeling for implant placement.

In addition, as an embodiment, the modeling unit (120) can extract information on the positions of teeth and the occlusal surfaces of teeth based on a 3D scan image of a patient's face with the mouth open. For example, in a 3D image scanned with the patient's mouth open, the positions and number of lost teeth, the positions and states of the teeth(s) surrounding the lost teeth, the positions and states of all teeth, the occlusal surfaces of the teeth, the joint positions, the crown positions, etc. can be identified, which has the effect of obtaining more accurate data compared to medical images captured with the patient's mouth closed. The modeling unit (120) can model a simulator for implant placement by reflecting the information on the positions of teeth and the occlusal surfaces of the teeth extracted from the 3D scan image.

The modeling unit (120) can generate data for a simulator for implant placement modeled as described above. Here, the simulator for implant placement may be three-dimensionally modeled, and the data for the simulator for implant placement may include three-dimensional modeling information.

The modeling unit (120) can calculate the state of removing the teeth in the actual location where implant placement is required or the teeth in the training target location for simulation based on the data for the simulator for modeling implant placement as described above, and model based on this. In this case, the modeling unit (120) can provide an implant placement simulation based on a simulator where the teeth in the actual implant target location or the teeth in the training target location are removed.

The 3D printing unit (130) can obtain 3D printing data based on data for the modeled simulator for implant placement and produce a simulator for implant placement by 3D printing based on the data.

That is, the 3D printing unit (130) can produce a 3D simulator using 3D printing data based on the properties of the anatomical structure extracted from the CBCT image for the modeled implant implantation simulator.

The silicone casting part (140) can be manufactured using silicone casting on a structure corresponding to the skin among the anatomical structures for the above-mentioned modeled implant placement simulator. That is, the silicone casting part (140) can perform silicone casting on a structure corresponding to the skin in the above-mentioned implant placement simulator manufactured by the 3D printing part (130). Through this process, a more realistic simulator can be provided.

The evaluation unit (150) can evaluate whether the results of a simulation performed based on the above-mentioned modeled implant placement simulator are consistent with the previously planned implant surgery data, and can evaluate the accuracy of the implant placement simulation based on this.

In addition, according to an embodiment, the simulator device (100) for implant placement may further include a memory unit and a control unit, etc., although not shown in FIG. 1.

The memory section can store data supporting various functions of the device and a program for the operation of the control section, can store input/output data (e.g., music files, still images, moving images, etc.), and can store a plurality of application programs (or applications) run on the device, data for the operation of the device, and commands. At least some of these application programs can be downloaded from an external server via wireless communication.

The memory section may include at least one type of storage medium among a flash memory type, a hard disk type, an SSD (Solid State Disk type), an SDD (Silicon Disk Drive) type, a multimedia card micro type, a card type memory (for example, an SD or XD memory, etc.), a random access memory (RAM), a static random access memory (SRAM), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a programmable read-only memory (PROM), a magnetic memory, a magnetic disk, and an optical disk. In addition, the memory section may be a database that is separate from the device but is connected by a wire or wirelessly.

The control unit may be implemented with a memory storing data for an algorithm for controlling the operation of components within the device or a program reproducing the algorithm, and at least one processor (not shown) performing the above-described operation using the data stored in the memory. In this case, the memory and the processor may be implemented as separate chips. Alternatively, the memory and the processor may be implemented as a single chip.

In addition, the control unit can control any one or a combination of the components described above to implement various embodiments according to the present disclosure described below on the device.

At least one component may be added or deleted in accordance with the performance of the components illustrated in FIG. 1. In addition, it will be readily understood by those skilled in the art that the mutual positions of the components may be changed in accordance with the performance or structure of the system.

Meanwhile, each component illustrated in Fig. 1 represents software and/or hardware components such as a Field Programmable Gate Array (FPGA) and an Application Specific Integrated Circuit (ASIC).

Hereinafter, the design and manufacturing method of the implant implantation simulator performed in the implant implantation simulator device (100) according to one embodiment of the present invention described above will be described in detail.

FIG. 2 is a flowchart schematically illustrating a method for designing and manufacturing an implant placement simulator according to one embodiment of the present invention.

The operations of FIG. 2 can be performed by the device (100) disclosed in FIG. 1. Here, the device (100) disclosed in FIG. 1 can be a computing device for implementing a simulator for implant placement, and in this case, the operations of FIG. 2 can be performed by the computing device.

Referring to FIG. 2, the information extraction unit (110) can extract anatomical structures based on the patient's CT image (S200).

Here, the CT image may be a CBCT image acquired through a CBCT device, for example, a CBCT image acquired by photographing a facial area while the patient's mouth is closed. In addition, the anatomical structure may include at least one of the maxilla, mandible, skin, maxillary sinus, inferior alveolar nerve canal, teeth, or tongue.

As an example, the information extraction unit (110) may extract an anatomical structure including at least one of the maxilla, mandible, skin, maxillary sinus, inferior alveolar nerve canal, teeth, or tongue that needs to be considered when implanting based on the CBCT image of the patient.

The information extraction unit (110) can extract the degree of mouth opening based on a 3D scan image of the patient's face with the mouth open (S210).

Here, the 3D scan image may be a 3D scan image acquired through an intraoral scanner or a 3D scanner, and may be, for example, a 3D scan image acquired by scanning a facial area while the patient opens his/her mouth as much as possible. At this time, the information extraction unit (110) may acquire a 3D scan image acquired by scanning a facial area while the patient opens his/her mouth as much as possible, and extract the maximum mouth opening of the patient based on this.

FIG. 3 is a drawing showing an example of a medical image of a patient requiring implant placement according to one embodiment of the present invention. For example, the medical image illustrated on the left side of FIG. 3 may be a CBCT image acquired through a CBCT device, and based on the CBCT image, anatomical structures (e.g., maxilla, mandible, skin, maxillary sinus, inferior alveolar nerve canal, teeth, tongue, etc.) that require consideration when implant placement can be extracted. The medical image illustrated on the right side of FIG. 3 may be a 3D scan image acquired through an intraoral scanner or a 3D scanner, and the 3D scan image may be data obtained by scanning the face of a patient with the mouth wide open. Through this, the maximum mouth opening of a patient requiring implant placement can be identified.

Referring again to FIG. 2, the modeling unit (120) can model a simulator for implant placement based on information extracted from a patient's medical image (e.g., CBCT image, 3D scan image), i.e., anatomical structure and opening degree (S220).

FIG. 4 is a diagram showing an example of a simulator modeling process according to one embodiment of the present invention. For example, as shown in FIG. 4, modeling of a simulator for implant placement can be performed by reflecting anatomical structures extracted based on a CBCT image, such as the maxilla, mandible, skin, maxillary sinus, inferior alveolar nerve canal, teeth, and tongue, and the maximum mouth opening of the patient extracted from a 3D scan image.

When implanting, it is important to plan the implant procedure by identifying the degree of the patient's mouth opening, as it can be affected not only by the patient's anatomical structure but also by the degree of the patient's mouth opening. However, since the degree of mouth opening varies from person to person, in order to identify the patient's condition more accurately and model a simulator reflecting this, it is effective to use medical images with the mouth open as well as medical images with the mouth closed. Therefore, according to the present invention, a customized simulator for each patient can be provided by considering both medical images acquired with the patient's mouth closed (e.g., CBCT images) and medical images acquired with the patient's mouth open (e.g., 3D scan images).

In addition, when modeling the simulator, as an example, the modeling unit (120) may calculate the intensity of each region of the maxilla and mandible extracted from the anatomical structure of the CBCT image, and model the simulator for implant placement by reflecting the calculated intensity of each region of the maxilla and mandible. Here, the intensity of each region of the maxilla and mandible may refer to the intensity of each region of the alveolar bones located corresponding to the maxilla and mandible, respectively, and the alveolar bones may have different intensities depending on their respective locations in the maxilla and mandible. Accordingly, the simulator for implant placement may be modeled by reflecting the different intensities of each region of the alveolar bones.

That is, the modeling unit (120) can model a simulator for implant placement by reflecting the anatomical structure, degree of opening, and strength of each area of the alveolar bones corresponding to each of the maxilla and mandible.

FIG. 5 is a drawing for explaining an example of dividing the area of alveolar bones positioned corresponding to each of the maxilla and the mandible according to one embodiment of the present invention. For example, as illustrated in FIG. 5, the maxilla may be divided into the left maxilla and the right maxilla based on the incisors (central incisors), and the left maxilla and the right maxilla may include incisors (central incisors, lateral incisors), canines, premolars (first and second premolars), and molars (first to third molars), respectively. In addition, similarly, the mandible may be divided into the left mandible and the right mandible based on the incisors (central incisors), and the left mandible and the right mandible may include incisors (central incisors, lateral incisors), canines, premolars (first and second premolars), and molars (first to third molars), respectively.

In one embodiment, the maxilla and the mandible can each be divided into a first region from the incisors to the canines, a second region from the canines to the premolars, and a third region from the premolars to the molars. In other words, the left maxilla and the right maxilla can each be divided into a first region including the incisors (central incisors, lateral incisors) and the canines, a second region including the premolars (first and second premolars), and a third region including the molars (first to third molars), respectively. In addition, the left mandible and the right mandible can each be divided into a first region including the incisors (central incisors, lateral incisors) and the canines, a second region including the premolars (first and second premolars), and a third region including the molars (first to third molars).

At this time, the alveolar bones located corresponding to the first to third regions, respectively, for the maxilla (i.e., the left and right maxilla) and the mandible (left and right mandible), may have different strengths. Accordingly, the modeling unit (120) can calculate the strength of the alveolar bones located corresponding to the first to third regions, respectively, for each region, and model a simulator for implant placement based on the strength of the alveolar bones for each of the first to third regions.

As described above, dividing each of the maxilla and mandible into the first to third regions and calculating the strength of the alveolar bone for each region and reflecting it in the modeling is only an example, and depending on the embodiment, it may be modeled so as to reflect the gradual change in the strength of the alveolar bone from the incisors (i.e., the alveolar bone corresponding to the incisors) to the molars (i.e., the alveolar bone corresponding to the molars) similar to reality. If the simulator is implemented by reflecting the gradual change in the strength of the alveolar bone in this way, it can provide the simulation that is most realistic. However, if the simulator is implemented by reflecting the pattern density for each region, it can be effective in terms of implementation and can also provide a highly realistic simulation at the same time.

In addition, when modeling the simulator, as an example, the modeling unit (120) may calculate a pattern density based on the strength of the alveolar bone located corresponding to each of the first to third regions, and design the calculated pattern density for each of the first to third regions to reflect it in the simulator modeling for implant placement.

FIGS. 6 to 8 are drawings for explaining an example of a process for designing a pattern density based on the strength of each region of the maxilla and the mandible according to one embodiment of the present invention. For example, as illustrated in FIG. 6, the maxilla and the mandible can be divided into the left and right based on the front teeth, and further, the left and right maxilla and the left and right mandible can be divided into the first to third regions as described above. At this time, since the strength of the alveolar bone for each of the first to third regions is different for each region as described above, the left and right maxilla and the left and right mandible can have internal structures with different densities based on this. Accordingly, the pattern densities for each region of the maxilla and the mandible can be designed as illustrated in FIGS. 6 (b) and (c).

In addition, when designing the pattern density calculated based on the strength of each region of the maxilla and mandible, the outer thickness and the inner pattern can be designed based on the thickness of the cortical bone and the compressive strength of the trabecular bone, as shown in Fig. 7. In addition, as shown in Fig. 8, the pattern density designed for each region of the maxilla and mandible can be manufactured in the form of a specimen. That is, in order to model the strength of each region of the alveolar bone, it can be implemented using a specimen form having different specific pattern densities according to the density of each region, as shown in Figs. 6 to 8. That is, according to this, by measuring and implementing the compressive strength for the density of each region, it is possible to create a simulator having mechanical properties more similar to reality, and through this, it is possible to provide a realistic implant placement simulation.

In addition, in modeling the simulator, as an example, the modeling unit (120) can extract information on the positions of teeth and the occlusal surfaces of teeth based on a 3D scan image of a patient's face with their mouths open. For example, in a 3D image scanned with a patient's mouths open, the positions and number of lost teeth, the positions and states of the teeth(s) surrounding the lost teeth, the positions and states of all teeth, the occlusal surfaces of teeth, joint positions, crown positions, and the states of prostheses can be identified, which has the effect of obtaining more accurate data compared to medical images captured with the patient's mouths closed. Accordingly, the modeling unit (120) can model the simulator for implant placement by further reflecting the information on the positions of teeth and the occlusal surfaces of teeth extracted from the 3D scan image. Therefore, the simulator for implant placement according to the present invention can provide a simulator identical to an actual patient by considering more accurate positions and states of teeth.

The modeling unit (120) can generate data for a simulator for implant placement modeled as described above. Here, the simulator for implant placement may be three-dimensionally modeled, and the data for the simulator for implant placement may include three-dimensional modeling information.

In one embodiment, the modeling unit (120) may calculate a state in which a tooth in an actual position requiring implant placement or a tooth in a training target position for simulation is removed based on data for a simulator for implant placement modeled as described above, and model it based on this. In this case, the modeling unit (120) may provide an implant placement simulation based on a simulator in which an actual implant target tooth or a tooth in a training target position is removed. That is, according to the present invention, simulations can be performed not only for actual implant target teeth but also for teeth in various positions (i.e., training target positions), thereby enabling training and education for various cases that may occur in reality compared to existing simulators.

Meanwhile, according to an embodiment, the 3D printing unit (130) can obtain 3D printing data based on data for the modeled implant placement simulator and 3D print and produce a simulator for implant placement based on the data. That is, the 3D printing unit (130) can produce a 3D simulator using 3D printing data based on the properties of the anatomical structure extracted from the CBCT image.

In addition, according to an embodiment, the silicone casting part (140) can be manufactured using silicone casting on a structure corresponding to the skin among the anatomical structures for the modeled implant placement simulator. That is, the silicone casting part (140) can perform silicone casting on a structure corresponding to the skin in the implant placement simulator manufactured by the 3D printing part (130). Through this process, a more realistic simulator can be provided.

FIG. 9 is a drawing showing an example of 3D printing and silicone casting a simulator for implant placement according to one embodiment of the present invention. As described above, a 3D simulator can be manufactured using 3D printing data as in (a) of FIG. 9, and silicone casting can be performed on an anatomical structure corresponding to skin in the 3D simulator as in (b) of FIG. 9.

In addition, according to an embodiment, the evaluation unit (150) can evaluate a model that reflects the pattern density calculated based on the intensity of each region of the upper and lower jaw.

FIG. 10 is a diagram showing an example of a method for evaluating a model that designs and reflects a pattern density based on the strength of each region of the alveolar bone according to one embodiment of the present invention. Referring to FIG. 10, when the pattern density calculated based on the strength of each region of the maxilla and the mandible (i.e., the strength of each region of the alveolar bone) as described above is implemented in the form of a specimen, as shown in (a) of FIG. 10, the evaluation unit (150) implants an implant in the specimen and then measures whether the implant implantation result is similar to an actual patient's implant implantation result using a drill torque, and can evaluate whether the implementation of the specimen is suitable based on the measured drill torque. Here, (b) of FIG. 10 is a table showing the measurement results of the drill torque.

In addition, according to an embodiment, the evaluation unit (150) can evaluate whether the results of a simulation performed based on the simulator for the modeled implant placement are consistent with the previously planned implant surgery data, and can evaluate the accuracy of the implant placement simulation based on this.

FIG. 11 is a diagram showing an example of a method for performing an evaluation of an implant placement simulation according to one embodiment of the present invention. Referring to FIG. 11, the evaluation unit (150) can perform an implant placement simulation based on the modeled simulator for implant placement and then scan the result using a scanning device (see the left image of FIG. 11). Then, the evaluation unit (150) can measure the angle, distance, error, etc. of the implant placement by matching the scanned result data with the pre-planned implant surgery data, thereby evaluating the accuracy of the simulation (see the right image of FIG. 11).

According to the present invention described above, a patient-tailored simulator for educational simulation can be provided. That is, implant placement modeling for a specific patient is possible based on medical data for the specific patient. In addition, since the positions of teeth for training can be set in various ways along with the positions of teeth to be actually placed in the patient, it is possible to provide simulations for various implant placement cases that can occur in reality.

According to the present invention described above, by considering not only images of a patient with his or her mouth closed but also images of a patient with his or her mouth open, a simulator is implemented to reflect teeth in various states for each patient, thereby providing more accurate simulation education.

According to the present invention described above, by modeling an implant placement simulator based on the strength of each region of the alveolar bone and reflecting the pattern density differently according to the strength of each region of the alveolar bone in the implant placement simulator, a simulation environment identical to that of an actual patient can be provided to increase realism.

According to the present invention described above, it is possible to measure the accuracy of implant placement by evaluating whether the procedure was performed well after implant placement.

The method according to the present invention described above can be implemented as a program (or application) to be executed in combination with a computer, which is hardware, and stored in a medium.

Meanwhile, the disclosed embodiments may be implemented in the form of a recording medium storing instructions executable by a computer. The instructions may be stored in the form of program codes, and when executed by a processor, may generate program modules to perform the operations of the disclosed embodiments. The recording medium may be implemented as a computer-readable recording medium.

Computer-readable storage media include all types of storage media that store instructions that can be deciphered by a computer. Examples include ROM (Read Only Memory), RAM (Random Access Memory), magnetic tape, magnetic disk, flash memory, and optical data storage devices.

As described above, the disclosed embodiments have been described with reference to the attached drawings. Those skilled in the art to which the present disclosure pertains will understand that the present disclosure can be implemented in forms other than the disclosed embodiments without changing the technical idea or essential features of the present disclosure. The disclosed embodiments are exemplary and should not be construed as limiting.

Claims (17)

In the design and manufacturing method of an implant placement simulator, which is performed by a simulator device for implant placement,
A step of extracting anatomical structures based on the patient's CBCT (Cone Beam CT) image;
A step of extracting the degree of opening based on a 3D scan image of the patient's face with the mouth open; and
A step of modeling a simulator for implant placement based on the above anatomical structure and the degree of opening;
The above anatomical structure comprises at least one of the maxilla, mandible, skin, maxillary sinus, inferior alveolar nerve canal, teeth, or tongue,
Modeling of the simulator for implant placement above,
The intensity of each region of the maxilla and the mandible extracted from the above anatomical structure is calculated, and the intensity of each region of the maxilla and the mandible is reflected and performed.
The upper jaw and the lower jaw are each divided into a first region from the incisors to the canines, a second region from the canines to the premolars, and a third region from the premolars to the molars.
Calculate the strength of the alveolar bone located corresponding to each of the first to third areas,
Modeling of the simulator for implant placement above,
A method for calculating a pattern density based on the strength of the alveolar bone located corresponding to each of the first to third regions, and reflecting the calculated pattern density in a design for each of the first to third regions. delete delete In the first paragraph,
The data for the simulator for the above modeled implant placement is used as 3D printing data.
A method further comprising the step of manufacturing a simulator for implantation of the modeled implant using the 3D printing data based on the properties of the anatomical structure. In paragraph 4,
A method further comprising the step of manufacturing a structure corresponding to the skin among the anatomical structures using silicone casting for the simulator for implant placement of the modeled implant. In the first paragraph,
A method further comprising: a step of scanning the results of a simulation performed based on a simulator for the above-mentioned modeled implant placement to evaluate whether they match with the previously planned implant surgery data. In the first paragraph,
Modeling of the simulator for implant placement above,
A method for further reflecting the positions of teeth and the occlusal plane of teeth based on the 3D scanned image of the patient's face with the mouth open. In the first paragraph,
The above-mentioned simulator for implant placement is modeled by calculating the state of removing teeth in the actual location where implant placement is required or teeth in the training target location for simulation.
A method for providing an implant placement simulation based on a simulator in which a tooth at the actual location or a tooth at the training target location is removed. In a simulator device for performing implant placement simulator design and manufacturing method,
An information extraction unit that extracts an anatomical structure based on a CBCT (Cone Beam CT) image of the patient and extracts the degree of opening based on a 3D scan image of the patient's face with the mouth open; and
A modeling unit for modeling a simulator for implant placement based on the above anatomical structure and the degree of opening;
The above anatomical structure comprises at least one of the maxilla, mandible, skin, maxillary sinus, inferior alveolar nerve canal, teeth, or tongue,
The above modeling part,
In modeling the simulator for implant placement, the strength of each region of the maxilla and the mandible extracted from the anatomical structure is calculated, and the strength of each region of the maxilla and the mandible is reflected in the model.
The upper jaw and the lower jaw are each divided into a first region from the incisors to the canines, a second region from the canines to the premolars, and a third region from the premolars to the molars.
The above modeling part,
In modeling the simulator for implant placement, the strength of the alveolar bone located corresponding to each of the first to third areas is calculated and reflected.
The above modeling part,
A device for modeling a simulator for implant placement, wherein the device calculates a pattern density based on the strength of the alveolar bone located corresponding to each of the first to third regions, and reflects the calculated pattern density by designing it for each of the first to third regions. delete delete In Article 9,
The data for the simulator for the above modeled implant placement is used as 3D printing data.
A device further comprising a 3D printing unit that produces a simulator for implantation of the modeled implant using the 3D printing data based on the properties of the anatomical structure. In Article 12,
A device further comprising a silicone casting part manufactured using silicone casting for a structure corresponding to the skin among the anatomical structures for the simulator for implant placement modeled above. In Article 9,
A device further comprising an evaluation unit for scanning the results of a simulation performed based on a simulator for the above-mentioned modeled implant placement and evaluating whether they match with the previously planned implant surgery data. In Article 9,
The above modeling part,
A device for modeling a simulator for implant placement, which extracts and further reflects the positions of teeth and the occlusal surfaces of teeth based on the 3D scanned image of the patient's face with the mouth open. In Article 9,
The above-mentioned simulator for implant placement is modeled by calculating the state of removing teeth in the actual location where implant placement is required or teeth in the training target location for simulation.
A device providing an implant placement simulation based on a simulator in which a tooth in the actual location or a tooth in the training target location has been removed. A computer program stored in a computer-readable storage medium, wherein the computer program, when executed on one or more processors, causes the computer program to perform the following operations for performing a method for designing and manufacturing an implant placement simulator, the operations being:
An operation to extract anatomical structures based on a patient's Cone Beam CT (CBCT) image;
An operation for extracting the degree of mouth opening based on a 3D scan image of the patient's face with the mouth open; and
An operation of modeling a simulator for implant placement based on the above anatomical structure and the degree of opening;
The above anatomical structure comprises at least one of the maxilla, mandible, skin, maxillary sinus, inferior alveolar nerve canal, teeth, or tongue,
Modeling of the simulator for implant placement above,
The intensity of each region of the maxilla and the mandible extracted from the above anatomical structure is calculated, and the intensity of each region of the maxilla and the mandible is reflected and performed.
The upper jaw and the lower jaw are each divided into a first region from the incisors to the canines, a second region from the canines to the premolars, and a third region from the premolars to the molars.
Calculate the strength of the alveolar bone located corresponding to each of the first to third areas,
Modeling of the simulator for implant placement above,
A computer program stored in a computer-readable storage medium, which calculates a pattern density based on the strength of the alveolar bone located corresponding to each of the first to third regions, and designs and reflects the calculated pattern density for each of the first to third regions.

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