Simulation device and method for occluder mold

Abstract

The invention discloses a simulation device and method for an occluder mold, which are suitable for simulating the occluder mold in a three-dimensional virtual space, and the simulation device comprises a transceiver circuit, a memory and a processor. The processor executes the following steps: obtaining a plurality of reference positions respectively corresponding to a plurality of tooth occlusion states from a plurality of dentition three-dimensional model diagrams; generating a target position according to the plurality of reference positions and the plurality of two-dimensional occlusion images; and generating a new dentition three-dimensional model diagram corresponding to the target occlusion state according to the target position, and establishing an occluder target model of the new dentition three-dimensional model diagram. Therefore, the medical risk caused by the operation of the patient and the reduction of the curative effect after the operation can be avoided.

Description

Technical Field

[0001] The present invention relates to a simulation technology for positioning imaging, and in particular to a simulation device and method for an articulator mold. Background Art

[0002] In the current treatment technology for apnea, medical personnel often need to perform surgery on the inside of the patient's throat or nasal cavity. This treatment method requires the patient to be under general anesthesia, and the use of an endoscope to remove, reshape or reconstruct part of the tissue inside the throat or nasal cavity, thereby increasing the airway space. However, since this treatment method requires the patient to be under general anesthesia, there are certain medical risks. In addition, after the removal, reshaping or reconstruction of part of the tissue inside the throat or nasal cavity, some of the tissue may cause the airway space to return to its original state due to self-repair, and the patient may also relapse into apnea due to muscle relaxation and weight gain with aging. Therefore, how to avoid the medical risks caused by patients undergoing surgery and the reduction in the efficacy of the surgery is a problem that those skilled in the art are eager to solve. Summary of the Invention

[0003] The main purpose of the present invention is to provide a simulation device and method for an articulator mold, which can avoid the medical risks caused by patients undergoing surgery and the reduction of post-operative therapeutic effects.

[0004] To achieve the above-mentioned objectives, the present invention provides a simulation device for an articulator mold, which is suitable for simulating an articulator mold in a three-dimensional virtual space, wherein the simulation device comprises:

[0005] a transceiver circuit configured to receive a plurality of three-dimensional dentition model images in the three-dimensional virtual space corresponding to a plurality of tooth occlusion states from a scanning modeling device, and to receive a plurality of two-dimensional occlusion images corresponding to the plurality of tooth occlusion states from an imaging device, wherein the plurality of tooth occlusion states include a maximum forward displacement state of the mandible, a maximum mouth opening state, and a natural occlusion state;

[0006] a memory configured to store a plurality of instructions;

[0007] a processor connected to the transceiver circuit and the memory and configured to execute the plurality of instructions to perform the following steps:

[0008] obtaining a plurality of reference positions corresponding to the plurality of tooth occlusion states from the plurality of three-dimensional dentition model images, wherein each of the plurality of reference positions is a position of a center point of a dentition of a lower jaw when an oral cavity of a patient is in the tooth occlusion state corresponding to the respective reference positions;

[0009] generating a target position based on the plurality of reference positions and the plurality of two-dimensional occlusal images, wherein the target position is a position of a center point of the dentition of the mandible when the patient's oral cavity is in a target occlusal state, wherein the target occlusal state indicates that an epiglottis cartilage and a trachea of ​​the patient are in a relatively open state; and

[0010] A new dentition 3D model image corresponding to the target occlusal state is generated according to the target position, and an articulator target model of the new dentition 3D model image is established.

[0011] In one embodiment, the maximum forward displacement state of the mandible is a state in which the mandible of the patient moves forward a maximum horizontal distance in a direction horizontal to the ground, the maximum mouth opening state is a state in which the mandible of the patient moves downward a maximum vertical distance in a direction perpendicular to the ground, and the natural occlusion state is a state in which the mandible of the patient naturally bites into the upper mandible.

[0012] In one embodiment, the multiple three-dimensional dental model images in the three-dimensional virtual space are generated by the scanning modeling device scanning the dentition of the patient's mouth in the multiple tooth occlusion states, and the multiple two-dimensional occlusion images are generated by the imaging device photographing the face and neck of the patient's mouth in the multiple tooth occlusion states.

[0013] In one embodiment, in the step of generating the target position according to the plurality of reference positions and the plurality of two-dimensional bite images, the processor is configured to perform the following steps:

[0014] An opening width corresponding to each of the plurality of two-dimensional bite images is identified from the plurality of two-dimensional bite images, and the target position is generated based on the plurality of reference positions, the plurality of two-dimensional bite images, and the opening width corresponding to each of the plurality of two-dimensional bite images, wherein the opening width is a width of an airway space formed by the epiglottis cartilage and the trachea of ​​the patient.

[0015] In one embodiment, in the step of generating the new three-dimensional tooth model image corresponding to the target occlusal state according to the target position, the processor is configured to perform the following steps:

[0016] A position of a mandibular model in one of the plurality of 3D dentition model images is adjusted so that the position of the dentition center point of the mandibular model in the 3D dentition model image is aligned with the target position, thereby generating the new 3D dentition model image corresponding to the target occlusal state.

[0017] To achieve the above-mentioned objectives, the present invention provides a method for simulating an articulator mold, which is suitable for simulating an articulator mold in a three-dimensional virtual space. The method comprises:

[0018] A processor obtains, from a plurality of three-dimensional dentition model images in the three-dimensional virtual space, a plurality of reference positions corresponding to a plurality of tooth occlusion states, wherein each of the plurality of reference positions is a position of a center point of a dentition of a mandible when an oral cavity of a patient is in the tooth occlusion state corresponding to the respective reference position. The plurality of three-dimensional dentition model images and the plurality of two-dimensional occlusion images in the three-dimensional virtual space correspond to a plurality of tooth occlusion states, wherein the plurality of tooth occlusion states include a mandible in a state of maximum forward displacement, a state of maximum mouth opening, and a natural occlusion state.

[0019] generating, by the processor, a target position based on the plurality of reference positions and the plurality of two-dimensional occlusal images, wherein the target position is a position of a center point of the dentition of the mandible when the patient's oral cavity is in a target occlusal state, wherein the target occlusal state indicates that an epiglottis and a trachea of ​​the patient are in a relatively open state; and

[0020] The processor generates a new 3D tooth model corresponding to the target occlusal state according to the target position, and establishes an articulator target model of the new 3D tooth model.

[0021] In one embodiment, the maximum forward displacement state of the mandible is a state in which the mandible of the patient moves forward a maximum horizontal distance in a direction horizontal to the ground, the maximum mouth opening state is a state in which the mandible of the patient moves downward a maximum vertical distance in a direction perpendicular to the ground, and the natural occlusion state is a state in which the mandible of the patient naturally bites into the upper mandible.

[0022] In one embodiment, the multiple three-dimensional dental model images in the three-dimensional virtual space are generated by a scanning modeling device scanning the dentition of the patient's mouth in the multiple tooth occlusion states, and the multiple two-dimensional occlusion images are generated by the imaging device photographing the face and neck of the patient's mouth in the multiple tooth occlusion states.

[0023] In one embodiment, the step of generating the target position according to the plurality of reference positions and the plurality of two-dimensional occlusal images by the processor includes:

[0024] The processor identifies an opening width corresponding to each of the multiple two-dimensional bite images from the multiple two-dimensional bite images, and generates the target position based on the multiple reference positions, the multiple two-dimensional bite images, and the opening width corresponding to each of the multiple two-dimensional bite images, wherein the opening width is a width of an airway space formed by the patient's epiglottis cartilage and the trachea.

[0025] In one embodiment, the step of generating the new three-dimensional model of the dentition corresponding to the target occlusal state according to the target position includes:

[0026] The processor adjusts a position of a mandibular model in one of the multiple three-dimensional tooth model images so that the position of the center point of the teeth of the mandibular model in the three-dimensional tooth model image is aligned with the target position, thereby generating the new three-dimensional tooth model image corresponding to the target occlusal state.

[0027] Compared to existing technologies, this invention offers the following benefits: It can precisely locate the target position, thereby obtaining a precise articulator target model, allowing the creation of an articulator mold that fits the patient's teeth. This provides the patient with comfortable wearing, good occlusion, and unobstructed breathing when wearing this mold. This avoids the medical risks and reduced efficacy associated with traditional surgical treatments.

[0028] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, but this does not limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 FIG2 is a block diagram illustrating a simulation device for an articulator mold according to some embodiments of the present invention.

[0030] Figure 2A Schematic diagram illustrating a three-dimensional model of teeth in a natural occlusal state according to some embodiments of the present invention.

[0031] Figure 2B A schematic diagram illustrating a three-dimensional model of a tooth row in a maximum mouth opening state according to some embodiments of the present invention is shown.

[0032] Figure 2C A schematic diagram illustrating a three-dimensional model of a tooth row in a state where the mandible is pushed forward to the maximum extent according to some embodiments of the present invention is shown.

[0033] Figure 3A Schematic diagram illustrating a two-dimensional occlusal image in a natural occlusal state according to some embodiments of the present invention.

[0034] Figure 3B FIG. 1 is a schematic diagram of a two-dimensional occlusal image in a state of maximum mouth opening according to some embodiments of the present invention.

[0035] Figure 4 A flowchart of a simulation method in some embodiments of the present invention is shown.

[0036] Figure 5A A schematic diagram illustrating the center point of the mandibular teeth in a three-dimensional model of the teeth in a natural occlusal state according to some embodiments of the present invention is shown.

[0037] Figure 5B An enlarged side cross-sectional view of a portion of a three-dimensional model of a tooth row in a natural occlusal state according to some embodiments of the present invention is shown.

[0038] Figure 6A A schematic diagram illustrating the center point of the teeth in the mandible in a three-dimensional model of the teeth in a state of maximum mouth opening according to some embodiments of the present invention is shown.

[0039] Figure 6B An enlarged side cross-sectional view of a portion of a three-dimensional model of a dentition in a maximum mouth opening state according to some embodiments of the present invention is shown.

[0040] Figure 7A A schematic diagram illustrating the center point of the teeth of the mandible in a three-dimensional model of the teeth in a state of maximum forward displacement according to some embodiments of the present invention is shown.

[0041] Figure 7B An enlarged side cross-sectional view of a portion of a three-dimensional model diagram of a tooth row in a state of maximum forward displacement according to some embodiments of the present invention is shown.

[0042] Figure 8A Schematic diagram illustrating an opening in a two-dimensional occlusal image corresponding to a natural occlusal state in some embodiments of the present invention.

[0043] Figure 8B Schematic diagram illustrating an opening in a two-dimensional occlusal image corresponding to a maximum mouth opening state in some embodiments of the present invention.

[0044] Figure 9A Schematic diagram illustrating a three-dimensional model of teeth in a target occlusal state according to some embodiments of the present invention.

[0045] Figure 9B An enlarged side cross-sectional view of a portion of a three-dimensional model of a tooth row in a target occlusal state according to some embodiments of the present invention is shown.

[0046] Figure 10A Schematic diagram illustrating an adjusted three-dimensional dentition model according to some embodiments of the present invention.

[0047] Figure 10B Schematic diagrams illustrating adjusted 3D models of teeth in other embodiments of the present invention are shown.

[0048] Figure 11A Schematic diagram illustrating an articulator target model in some embodiments of the present invention.

[0049] Figure 11B Schematic diagram illustrating the detailed structure of an articulator target model in some embodiments of the present invention.

[0050] Figure 12 A schematic diagram illustrating a two-dimensional occlusal image generated by photographing a patient wearing an articulator mold in some embodiments of the present invention is shown.

[0051] Figure 13 Schematic diagram of a simulation port in some embodiments of the present invention is shown.

[0052] Wherein, the reference numerals:

[0053] 100:Simulation device

[0054] 110: Transceiver circuit

[0055] 120: Processor

[0056] 130: Memory

[0057] 200: Scanning modeling device

[0058] 300: Imaging device

[0059] 400:Mold production machine

[0060] 210, 220, 230: 3D model of the dentition

[0061] 211, 221, 231, 911: Mandibular models

[0062] 212, 222, 232, 912: Mandibular models

[0063] vd: maximum vertical distance

[0064] hd: Maximum horizontal distance

[0065] 310-320, 1120: 2D occlusal image

[0066] 213, 223, 233, 913: Center of dentition

[0067] 510-710, 914: Part of the three-dimensional model of the dentition

[0068] 214, 215, 225, 226, 235, 236: extension lines

[0069] A~C: Location

[0070] X: horizontal coordinate axis

[0071] Y: vertical axis

[0072] d1: maximum width

[0073] d2: target width

[0074] 910: New 3D model of dentition

[0075] TP: Target position

[0076] 1010-1020: Adjusted 3D model of the dentition

[0077] 1110: Articulator target model

[0078] 1111: Upper jaw tooth engagement groove

[0079] 1112: Upper arch

[0080] 1113: Lower arch

[0081] 1114: Mandibular tooth engagement groove

[0082] 1115:Analog port DETAILED DESCRIPTION

[0083] Reference Figure 1 , Figure 1 FIG. 1 is a block diagram illustrating a simulation device 100 for an articulator mold according to some embodiments of the present invention. Figure 1 The simulation device 100 for the articulator mold can be implemented by any electronic device or server (for example, it can be a terminal processing device (i.e., a mobile phone, a desktop computer or a tablet computer, etc.), a cloud device, a server or a cloud server, etc.). The simulation device 100 is suitable for simulating the articulator mold in a three-dimensional virtual space. In this way, the simulation device 100 can transmit the simulated optimal articulator model to the external mold production machine 400 to produce a physical articulator mold corresponding to the optimal articulator model, wherein the articulator mold corresponding to the optimal articulator model is a mold for the patient to bite to treat sleep apnea.

[0084] Furthermore, when the patient bites the articulator mold corresponding to the optimal articulator model, the patient's epiglottis and trachea are in a relatively open state (i.e., open to a state where they can breathe properly and comfortably). In this way, as long as the patient bites this articulator mold, the patient's airway space can be increased to prevent the occurrence of apnea. By using the articulator mold, the user no longer needs general anesthesia to perform the operation, thus solving the problem of medical risks caused by the operation and reduced efficacy after the operation. On the other hand, when the patient uses the articulator mold corresponding to the optimal articulator target model, the patient's mandible can bite the articulator mold in a more comfortable posture, which also avoids the problem of the patient's mandible being too strong and causing mandibular muscle soreness. The subsequent paragraphs will explain the optimal articulator model simulation and the structure of the articulator mold, so it will not be further elaborated here.

[0085] like Figure 1 As shown, the simulation device 100 for an articulator mold includes a transceiver circuit 110 , a processor 120 , and a memory 130 . The processor 120 is connected to the transceiver circuit 110 and the memory 130 .

[0086] In this embodiment, the transceiver circuit 110 receives multiple three-dimensional dentition model images in a three-dimensional virtual space corresponding to multiple dental occlusion states from the scanning modeling device 200, and then receives multiple two-dimensional occlusion images corresponding to the same multiple dental occlusion states from the imaging device 300. The multiple dental occlusion states include at least a maximum mandibular forward displacement state, a maximum mouth opening state, and a natural occlusion state. In some embodiments, the transceiver circuit 110 can be one or a combination of a transmitter circuit, an analog-to-digital converter, a digital-to-analog converter, a low-noise amplifier, a mixer, a filter, an impedance matching device, a transmission line, a power amplifier, one or more antenna circuits, and a local storage medium. In some embodiments, the maximum mandibular forward displacement state is a state in which the patient's mandible has moved forward a maximum horizontal distance (i.e., the maximum distance the patient's mandible can move forward horizontally) in a direction parallel to the ground. In some embodiments, the maximum mouth opening state is when the patient's mandible moves downward in a direction perpendicular to the ground a maximum vertical distance (i.e., the maximum vertical distance the patient's mandible can move downward). In some embodiments, the natural occlusion state is when the patient's mandible naturally bites against the upper jaw.

[0087] In some embodiments, the plurality of dental occlusal states may further include other types of occlusal states. For example, the occlusal state may be a first occlusal state in which the patient's mandible moves forward in a direction horizontal to the ground by half of its maximum horizontal distance and downward in a direction perpendicular to the ground by half of its maximum vertical distance, or a second occlusal state in which the patient's mandible moves forward in a direction horizontal to the ground by one-third of its maximum horizontal distance and downward in a direction perpendicular to the ground by half of its maximum vertical distance.

[0088] In some embodiments, the multiple 3D dental model images in the three-dimensional virtual space are generated by scanning the patient's dentition in multiple occlusal states using the scanning modeling device 200. In some embodiments, the multiple two-dimensional occlusal images are generated by photographing the patient's face and neck (e.g., from the side of the face to the throat) in multiple occlusal states using the imaging device 300. In some embodiments, the multiple two-dimensional occlusal images can also be generated by photographing the side of the patient's face and neck in a portion of the occlusal states (e.g., the widest mouth opening and the natural occlusal state) using the imaging device 300.

[0089] It is worth noting that when an imaging device 300 that generates high radiation (e.g., X-ray imaging) is used for imaging, the imaging device 300 will only capture 2D images of a few of the teeth in the occlusal state (i.e., capture a small number of 2D occlusal images) to prevent the patient's body from absorbing excessive radiation. Conversely, when an imaging device 300 that does not generate high radiation (e.g., ultrasound imaging) is used for imaging, the imaging device 300 can capture 2D images of multiple teeth in the occlusal state (i.e., capture a large number of 2D occlusal images).

[0090] The following is an actual example of a three-dimensional model of the teeth and a two-dimensional occlusal image. Figures 2A to 2C ,in Figure 2A A schematic diagram illustrating a three-dimensional model diagram 210 of teeth in a natural occlusal state according to some embodiments of the present invention is shown. Figure 2B A schematic diagram illustrating a three-dimensional model diagram 220 of a tooth row in a maximum mouth opening state according to some embodiments of the present invention is shown. Figure 2C A schematic diagram of a three-dimensional model of the teeth 230 is shown in a state where the mandible is pushed forward to the maximum extent according to some embodiments of the present invention.

[0091] like Figure 2A As shown, the three-dimensional model of the dentition 210 is a three-dimensional model generated by scanning the patient's oral cavity in a natural occlusal state. The three-dimensional model of the dentition 210 has an upper jaw model 211 and a lower jaw model 212. The lower jaw model 212 is a three-dimensional simulated model of the lower jaw naturally biting the upper jaw. The upper jaw model 211 is a three-dimensional simulated model of the upper jaw that has not moved. Figure 2B As shown, the 3D model of the dentition 220 is a three-dimensional model generated by scanning the dentition of the patient's mouth in the maximum opening state. The 3D model of the dentition 220 has an upper jaw model 221 and a lower jaw model 222. The lower jaw model 222 is a three-dimensional simulated stereoscopic model of the patient's lower jaw that has been moved downward in a direction perpendicular to the ground by a maximum vertical distance vd. The upper jaw model 221 is also a three-dimensional simulated stereoscopic model of the upper jaw that has not been moved. Figure 2C As shown, dentition 3D model image 230 is a three-dimensional model of the dentition generated by scanning a patient's oral cavity with the mandible moved forward to its maximum extent. Denture 3D model image 230 includes a maxillary model 231 and a mandibular model 232. Mandibular model 232 is a three-dimensional simulated model of the patient's mandible moved forward a maximum horizontal distance hd relative to the ground. Mandibular model 231 is also a three-dimensional simulated model of the mandible without movement.

[0092] Refer to Figures 3A-3B ,in Figure 3AA schematic diagram illustrating a two-dimensional occlusal image 310 in a natural occlusal state according to some embodiments of the present invention is shown. Figure 3B FIG. 3 is a schematic diagram illustrating a two-dimensional occlusal image 310 in a maximum mouth opening state according to some embodiments of the present invention. Figure 3A As shown, the two-dimensional occlusal image 310 is a two-dimensional X-ray image of the side of the face and neck of the patient's oral cavity in a natural occlusal state. Figure 3B As shown, the two-dimensional occlusal image 320 is a two-dimensional X-ray image of the side of the face and neck of the patient with the oral cavity in the maximum opening state.

[0093] In some embodiments, the scanning modeling device 200 may be any type of external 3D scanner (e.g., a contact probe 3D scanner, a non-contact optical 3D scanner, or a non-contact laser 3D scanner) for scanning a field for 3D reconstruction. In some embodiments, the imaging device 300 may be any type of external imaging device used for medical purposes (e.g., an ultrasound device, a computed tomography (CT) device, a magnetic resonance imaging (MRI) device, or an X-ray device).

[0094] In some embodiments, the 3D dental model can be a 3D model (e.g., a computer-aided design (CAD) model) simulated by any 3D simulation software (e.g., AutoCAD, Blender, or 3ds Max). In some embodiments, the 2D occlusal image can be any type of image used for medical purposes (e.g., ultrasound, computed tomography (CT), magnetic resonance imaging (MRI), or X-ray).

[0095] In this embodiment, the memory 130 stores a plurality of instructions, and the processor 120 accesses these instructions to execute the simulation method described in the subsequent paragraphs. In some implementations, the memory 130 can be implemented by a flash memory, a read-only memory, a hard disk, or any equivalent storage component, but is not limited thereto. In some embodiments, the plurality of instructions can be corresponding software or firmware instruction programs. In some embodiments, the processor 120 can be implemented by a central processing unit (CPU), a micro control unit (MCU), a programmable logic controller (PLC), a system on chip (SoC), or a field programmable gate array (FPGA), but is not limited thereto.

[0096] In some embodiments, the processor 120 executes the simulation method described in the subsequent sections to generate an articulator target model. The transceiver circuit 110 transmits the articulator target model to the mold production machine 400, causing the mold production machine 400 to produce an articulator mold corresponding to the articulator target model. In some embodiments, the mold production machine 400 can be a machine used to form molds (e.g., a 3D rubber injection machine or a plastic injection machine).

[0097] The simulation method of the present invention is further described below. Figure 4 , Figure 4 A flow chart of a simulation method in some embodiments of the present invention is shown. The simulation method is applicable to Figure 1 A simulation device 100 is shown for an articulator mold.

[0098] like Figure 4 As shown, the simulation method includes steps S410 to S430. First, in step S410, the processor 120 obtains a plurality of reference positions corresponding to a plurality of tooth occlusion states from a plurality of three-dimensional dentition model images. In this embodiment, each of the plurality of reference positions is the position of the center point of the dentition of the mandible when the patient's mouth is in the tooth occlusion state corresponding to each of the plurality of reference positions.

[0099] In some embodiments, the processor 120 establishes a dentition coordinate system based on the position of the center point of the mandibular dentition in the 3D model of the dentition in the natural occlusion state. Next, the processor 120 obtains the position of the center point of the mandibular dentition in each of the multiple 3D model images based on the dentition coordinate system as multiple reference positions corresponding to the multiple occlusion states.

[0100] In some embodiments, the processor 120 uses the position of the center point of the dentition in the mandibular 3D model of the natural occlusion state as the origin of a dentition coordinate system. Next, the processor 120 uses the direction extending forward of the dentition center in each of the multiple 3D model images as the positive direction of the horizontal coordinate axis of the dentition coordinate system (i.e., the direction of the line extending forward from the dentition center is the positive direction of the horizontal coordinate axis of the dentition coordinate system). Next, the processor 120 uses the direction extending downward from the dentition center in each of the multiple 3D model images as the positive direction of the vertical coordinate axis of the dentition coordinate system (i.e., the direction of the line extending downward from the dentition center is the positive direction of the vertical coordinate axis of the dentition coordinate system).

[0101] The following is an actual example to illustrate how to obtain the reference position. Figures 5A-5B ,in Figure 5A A schematic diagram illustrating a center point 213 of the mandibular teeth in a three-dimensional model of teeth in a natural occlusal state according to some embodiments of the present invention is shown. Figure 5B FIG. 2 is an enlarged side cross-sectional view of a portion 510 of the three-dimensional model of the teeth in the natural occlusal state in some embodiments of the present invention. Figure 5A as well as Figure 5B As shown, the mandibular model 212 has a dentition center point 213 of the mandibular portion. The processor 120 uses the position A of the dentition center point 213 as the origin of the dentition coordinate system. Next, the processor 120 uses the direction of the extension line 214 extending forward from the dentition center point 213 as the positive direction of the transverse coordinate axis X of the dentition coordinate system. Next, the processor 120 uses the direction of the extension line 215 extending downward from the dentition center point 213 as the positive direction of the longitudinal coordinate axis Y of the dentition coordinate system. In this way, the processor 120 can establish a dentition coordinate system in the dentition three-dimensional model diagram 210 in the natural occlusal state, and then use the position A as the reference position corresponding to the natural occlusal state based on the dentition coordinate system (that is, the coordinates of the position A (that is, the origin) are used as the coordinates of the reference position corresponding to the natural occlusal state based on the dentition coordinate system).

[0102] Refer to Figures 6A-6B ,in Figure 6A A schematic diagram illustrating a center point 223 of the mandibular teeth in a three-dimensional model of the teeth in a maximum mouth opening state according to some embodiments of the present invention is shown. Figure 6B FIG. 2 is an enlarged side cross-sectional view of a portion 610 of the three-dimensional model of the teeth in the maximum mouth opening state according to some embodiments of the present invention. Figure 6A as well as Figure 6B As shown, the processor 120 will Figure 5BThe position A of the dentition center point 213 is used as the origin of the dentition coordinate system in the three-dimensional dentition model diagram 220. The processor 120 then uses the direction of a line 225 extending forward from the dentition center point 223 as the positive direction of the transverse coordinate axis X of the dentition coordinate system. The processor 120 then uses the direction of a line 226 extending downward from the dentition center point 223 as the positive direction of the longitudinal coordinate axis Y of the dentition coordinate system. In this way, the processor 120 establishes the dentition coordinate system in the three-dimensional dentition model diagram 220 in the maximum mouth opening state. Based on the dentition coordinate system, the position C of the dentition center point 223 on the mandibular model 222 is used as the reference position corresponding to the maximum mouth opening state (i.e., the coordinates of position C are used as the coordinates of the reference position corresponding to the maximum mouth opening state based on the dentition coordinate system).

[0103] Refer to Figures 7A-7B ,in Figure 7A A schematic diagram illustrating a center point 233 of the mandibular teeth in a three-dimensional model of the teeth in a state of maximum forward displacement in some embodiments of the present invention is shown. Figure 7B FIG. 2 is an enlarged side cross-sectional view of a portion 710 of the three-dimensional model of the teeth in the maximum forward displacement state according to some embodiments of the present invention. Figure 7A as well as Figure 7B As shown, the processor 120 will Figure 5B Position A of the dentition center point 213 is used as the origin of the dentition coordinate system in the three-dimensional dentition model diagram 230. The processor 120 then uses the direction of a line 235 extending forward from the dentition center point 233 as the positive direction of the transverse coordinate axis X of the dentition coordinate system. The processor 120 then uses the direction of a line 236 extending downward from the dentition center point 233 as the positive direction of the longitudinal coordinate axis Y of the dentition coordinate system. In this way, the processor 120 establishes the dentition coordinate system in the three-dimensional dentition model diagram 230 in the maximum forward position. Based on the dentition coordinate system, position B of the dentition center point 233 of the mandible on the mandibular model 232 is used as the reference position corresponding to the maximum forward position (i.e., the coordinates of position B are used as the coordinates of the reference position corresponding to the maximum forward position based on the dentition coordinate system).

[0104] Furthermore, back to Figure 4In step S420, the processor 120 generates a target position based on the multiple reference positions and the multiple two-dimensional occlusal images. In this embodiment, the target position is the position of the center point of the dentition of the mandible when the patient's mouth is in a target occlusal state, wherein the target occlusal state indicates that the patient's epiglottis and trachea are in a relatively open state. In some embodiments, there is a ratio value (pre-set by the user) between the opening width corresponding to the relatively open state and the opening width corresponding to the maximum mouth opening state, and the opening width is the width of the airway space formed by the patient's epiglottis and trachea. In some embodiments, the processor 120 identifies the opening width corresponding to each of the multiple two-dimensional occlusal images from the multiple two-dimensional occlusal images, and generates the target position based on the multiple reference positions, the multiple two-dimensional occlusal images, and the opening width corresponding to each of the multiple two-dimensional occlusal images. In some embodiments, the target position is the coordinate of the center point of the dentition of the mandible in the target occlusal state in the dentition coordinate system.

[0105] In some embodiments, the processor 120 may utilize any machine learning algorithm (e.g., a YOLO (you only look once) algorithm, a single shot multibox detector (SSD) algorithm, a YOLACT (you only look at coefficients) algorithm, a convolutional neural network (CNN) algorithm, a region-based convolutional neural network (R-CNN) algorithm, a fast region-based convolutional neural network (fast R-CNN) algorithm, a faster region-based convolutional neural network (faster R-CNN) algorithm, or a combination thereof) to identify the mouth opening width corresponding to each of the plurality of two-dimensional bite images from the plurality of two-dimensional bite images. For example, the processor 120 may utilize a plurality of other two-dimensional bite images of other patients as samples and use the mouth opening width corresponding to each of the plurality of other two-dimensional bite images as labels. Next, the processor 120 may train a recognition model using the YOLO algorithm according to the samples and the labels, and then use the recognition model to recognize the opening widths corresponding to the plurality of two-dimensional occlusal images.

[0106] The following is an example of the opening width. Figures 8A-8B , Figure 8AA schematic diagram illustrating an opening in a two-dimensional occlusal image 310 corresponding to a natural occlusal state in some embodiments of the present invention is shown. Figure 8B A schematic diagram illustrating the opening in the two-dimensional occlusal image 320 corresponding to the maximum mouth opening state in some embodiments of the present invention is shown. Figure 8A As shown, when the patient's mouth is in a natural occlusal state, the patient's epiglottis and tracheal opening are completely closed (i.e., completely closed state). At this time, the processor 120 recognizes from the two-dimensional occlusal image 310 that the opening width corresponding to the two-dimensional occlusal image 310 is zero. Figure 8B As shown, when the patient's mouth is in the maximum opening state, the patient's epiglottis and tracheal opening are fully open (i.e., the maximum opening state). At this time, the processor 120 identifies the opening width corresponding to the two-dimensional bite image 310 as the maximum width d1.

[0107] In some embodiments, the processor 120 may utilize any machine learning algorithm to generate a target position in the dentition coordinate system based on multiple reference positions, multiple two-dimensional occlusal images, and the corresponding opening widths of each of the multiple two-dimensional occlusal images. For example, the processor 120 may utilize multiple reference positions obtained from multiple other three-dimensional dentition models of other patients, multiple two-dimensional occlusal images of other patients, and the corresponding opening widths of each of the multiple two-dimensional occlusal images as samples, and use pre-measured target positions in the dentition coordinate system of other patients as labels. The processor 120 may then utilize embedding processing (i.e., vectorizing these samples and labels) and a convolutional neural network algorithm to train another recognition model. In this manner, the processor 120 may utilize this other recognition model to generate a target position in the dentition coordinate system based on the target patient's multiple reference positions, multiple two-dimensional occlusal images, and the corresponding opening widths of each of the multiple two-dimensional occlusal images.

[0108] Furthermore, back to Figure 4 In step S430, the processor 120 generates a new 3D dentition model image corresponding to the target occlusal state based on the target position and one of the 3D dentition model images, and establishes an articulator target model for the new 3D dentition model image. In some embodiments, one of the 3D dentition model images can be any one of a plurality of 3D dentition model images (e.g., a 3D dentition model image in a natural occlusal state). In some embodiments, the processor 120 adjusts the position of the mandibular model in one of the 3D dentition model images so that the position of the center point of the dentition of the mandibular model in one of the 3D dentition model images is aligned with the target position, thereby generating a new 3D dentition model image corresponding to the target occlusal state. Next, the processor 120 establishes an articulator target model for the generated new 3D dentition model image.

[0109] In other words, the processor 120 will make the three-dimensional model of the dentition conform to the shape of the patient's oral cavity in the target occlusal state, and use this shape as a template for the articulator target model to generate the articulator target model (i.e., the optimal articulator model). Finally, the processor 120 will transmit the articulator target model to the mold production machine 400, and the mold production machine 400 will regenerate the articulator mold corresponding to the articulator target model. It is worth noting that the patient will have the best treatment experience when using this articulator mold. In detail, the width of the respiratory space formed by the patient's epiglottis cartilage and trachea is a moderate opening width (i.e., it is in a more open state), and the patient's mandible will not feel sore due to excessive exertion.

[0110] The following is an actual example of the target position and the new three-dimensional model of the tooth row. Figures 9A-9B ,in Figure 9A A schematic diagram illustrating a new three-dimensional model of teeth in a target occlusal state 910 according to some embodiments of the present invention is shown. Figure 9B FIG. 9 is an enlarged side cross-sectional view of a portion 914 of a new three-dimensional model of teeth in a target occlusal state according to some embodiments of the present invention. Figure 5A as well as Figure 9A As shown, assuming that one of the above-mentioned three-dimensional dental model images is the three-dimensional dental model image 210, the processor 120 can adjust the position of the mandibular model 212 in the three-dimensional dental model image 210 until the position of the dentition center point 213 of the mandibular in the three-dimensional dental model image 210 is aligned with the target position.

[0111] Furthermore, if Figure 5B As shown in Figure 9B, based on Figure 5B Based on the dentition coordinate system established in the dentition 3D model image 210, the processor 120 may move the position of the dentition center point 213 of the mandible in the dentition 3D model image 210 to align with the target position TP, thereby generating a new dentition 3D model image 910. At this time, through such displacement, the processor 120 may generate a new dentition 3D model image 910, wherein the position of the mandibular model 911 in the new dentition 3D model image 910 is the same as the position of the mandibular model 211 in the dentition 3D model image 210, and the position of the mandibular model 912 in the new dentition 3D model image 910 is the position of the mandibular model 212 in the dentition 3D model image 210 when the dentition center point 213 of the mandible is aligned with the target position TP.

[0112] Although having the patient wear an articulator mold created from a new 3D dentition model image can resolve the apnea problem, the patient may not necessarily feel comfortable wearing the articulator mold. Therefore, the present invention can further adjust the new 3D dentition model image to an adjusted 3D dentition model image after obtaining the movement parameters for each individual patient, so that the resulting articulator mold can achieve both apnea improvement and a comfortable occlusion. In some embodiments, the processor 120 adjusts the position of the mandibular model in the new 3D dentition model image based on the movement parameters to generate the adjusted 3D dentition model image, and establishes an articulator target model for the adjusted 3D dentition model image. In some embodiments, the movement parameters indicate the horizontal advancement ratio of the dentition center point of the patient's mandible (e.g., the horizontal advancement ratio corresponding to the lateral coordinate of the dentition center point of the mandible in a state of maximum forward movement is 100%, while the horizontal advancement ratio corresponding to the lateral coordinate of the dentition center point of the mandible in a target occlusal state is 0%). Based on this adjustment, the processor 120 can generate an adjusted articulator target model. The user can then try biting the articulator mold generated based on the adjusted articulator target model. If the patient feels comfortable, this articulator mold is the most suitable mold for the patient. When the patient bites on this mold to improve apnea, the patient's jaw is in the most comfortable position.

[0113] The following is an actual example to illustrate the movement parameters. Figures 10A-10B ,in Figure 10A A schematic diagram illustrating an adjusted three-dimensional dentition model diagram 1010 in some embodiments of the present invention is shown. Figure 10B Schematic diagrams of adjusted 3D tooth model images 1020 in other embodiments of the present invention are shown. Assume that the horizontal forward displacement ratio corresponding to the transverse coordinate of the tooth center point of the mandibular portion in the maximum forward displacement state is 100%, and the horizontal forward displacement ratio corresponding to the transverse coordinate of the tooth center point of the mandibular portion in the target occlusal state is 0%. Figure 10A In the embodiment, the displacement parameter corresponding to the adjusted dentition stereoscopic model diagram 1010 is 60%, and Figure 10B In the embodiment, the displacement parameter corresponding to the adjusted dentition three-dimensional model image 1020 is 70%.

[0114] The following is an actual example to illustrate the articulator target model. Figures 11A-11B , Figure 11A A schematic diagram illustrating an articulator target model 1110 in some embodiments of the present invention is shown. Figure 11B A schematic diagram illustrating the detailed structure of the articulator target model 1110 in some embodiments of the present invention is shown. Figure 11AAs shown, the processor 120 can generate an articulator target model 1110 in the three-dimensional space between the maxillary model 911 and the mandibular model 912 in the new three-dimensional dentition model image 910 in the three-dimensional space. Figure 11B As shown, the articulator target model 1110 includes an upper arch portion 1112 and a lower arch portion 1113, each of which has two interconnected ends. The upper arch portion 1112 has a mandibular dentition engagement groove 1111 whose shape conforms to that of the mandibular model 911, while the lower arch portion 1113 has a mandibular dentition engagement groove 1114 whose shape conforms to that of the mandibular model 912. The mandibular dentition engagement groove 1111 and the mandibular dentition engagement groove 1114 are disposed opposite each other. When the patient wears the articulator mold corresponding to the articulator target model 1110 in the oral cavity, the groove corresponding to the maxillary tooth engagement groove 1111 and the groove corresponding to the mandibular tooth engagement groove 1114 respectively engage with the patient's maxillary and mandibular teeth, thereby fixing the relative positions of the patient's maxillary and mandibular parts at the target position.

[0115] The following is a practical example of how to take a 2D occlusal image of a patient wearing an articulator mold. Figure 12 , Figure 12 A schematic diagram illustrating a two-dimensional occlusal image 1120 generated by photographing a patient wearing an articulator mold in some embodiments of the present invention is shown. Figure 12 As shown, the two-dimensional occlusal image 1120 is an image taken of a patient wearing an articulator mold. The processor 120 can identify the opening width corresponding to the two-dimensional occlusal image 1120 as the target width d2 from the two-dimensional occlusal image 1120, where the target width d2 is the width of the epiglottis cartilage and the tracheal opening when the patient's mouth is in the target occlusal state. Figure 8B The maximum width d1 of the target width d2 may be two-thirds of the maximum width d1.

[0116] In some embodiments, the processor 120 generates a simulated opening in the articulator target model. In some embodiments, the simulated opening is elliptical in shape. In some embodiments, the area of ​​the simulated opening is related to the air flow rate, air velocity, and air density. In some embodiments, the air flow rate and air density may be pre-stored in the memory 130. In some embodiments, the air flow rate (typically five to ten liters per minute) and air density (calculated based on pre-measured air temperature, pressure, and relative humidity) may be pre-stored in the memory 130. In some embodiments, the memory 130 stores a user-preset area of ​​the simulated opening, where the area of ​​the simulated opening is inversely proportional to the air velocity (the area of ​​the simulated opening is equal to the ratio of the air velocity to the air flow rate). In some embodiments, the processor 120 generates a simulated opening in the articulator target model based on this area. Consequently, the corresponding articulator mold will have an opening corresponding to the simulated opening. It is worth noting that a larger opening area results in a lower air velocity (i.e., smoother breathing). Conversely, a smaller opening area will result in a higher air flow velocity (ie, faster breathing).

[0117] The following is an actual example to illustrate the analog port. Figure 13 , Figure 13 FIG. 1 is a schematic diagram illustrating the analog port 1115 in some embodiments of the present invention. Figure 13 As shown, there is a simulated opening 1115 at the connection between the upper arch portion 1112 and the lower arch portion 1113 in the articulator target model 1110, wherein the simulated opening 1115 is elliptical in shape.

[0118] In summary, the articulator mold simulation device and method proposed in the present invention utilizes a scanned 3D model of the patient's dentition, obtained with multiple teeth in occlusal positions, and a captured 2D occlusal image to determine the position of the center point of the patient's mandible when the patient's mouth is in a target occlusal position. Furthermore, the articulator mold simulation device and method proposed in the present invention can generate an optimal articulator model based on this position and one of the 3D models, thereby producing a mold most suitable for the patient based on the optimal articulator model. Consequently, when the patient bites on this mold, not only is the patient's epiglottis and trachea more open (i.e., allowing for unobstructed breathing), thereby improving apnea, but the patient's mandible is also placed in the most comfortable position. Consequently, patients with apnea no longer need traditional surgical treatment, thereby avoiding medical risks and reduced postoperative efficacy. Furthermore, the articulator mold simulation device and method proposed in the present invention can also generate a simulated opening on the optimal articulator model. This allows patients to breathe more comfortably while using the mold.

[0119] Of course, the present invention may have many other embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art may make various corresponding changes and modifications based on the present invention, but these corresponding changes and modifications should all fall within the scope of protection of the claims of the present invention.

Claims

1. A simulation device for an articulator mold, characterized in that: Suitable for simulating an articulator mold in a three-dimensional virtual space, wherein the simulation device comprises: a transceiver circuit configured to receive a plurality of three-dimensional dentition model images in the three-dimensional virtual space corresponding to a plurality of tooth occlusion states from a scanning modeling device, and to receive a plurality of two-dimensional occlusion images corresponding to the plurality of tooth occlusion states from an imaging device, wherein the plurality of tooth occlusion states include a maximum forward displacement state of the mandible, a maximum mouth opening state, and a natural occlusion state; a memory configured to store a plurality of instructions; a processor connected to the transceiver circuit and the memory and configured to execute the plurality of instructions to perform the following steps: obtaining a plurality of reference positions corresponding to the plurality of tooth occlusion states from the plurality of three-dimensional dentition model images, wherein each of the plurality of reference positions is a position of a center point of a dentition of a lower jaw when an oral cavity of a patient is in the tooth occlusion state corresponding to the respective reference positions; generating a target position based on the plurality of reference positions and the plurality of two-dimensional occlusal images, wherein the target position is a position of a center point of the dentition of the mandible when the patient's oral cavity is in a target occlusal state, wherein the target occlusal state indicates that an epiglottis cartilage and a trachea of ​​the patient are in a relatively open state; and A new dentition 3D model image corresponding to the target occlusal state is generated according to the target position, and an articulator target model of the new dentition 3D model image is established.

2. The simulation device for articulator mold according to claim 1, characterized in that The maximum forward displacement state of the mandible refers to a state in which the mandible of the patient moves forward a maximum horizontal distance in a direction horizontal to the ground; the maximum mouth opening state refers to a state in which the mandible of the patient moves downward a maximum vertical distance in a direction perpendicular to the ground; and the natural occlusion state refers to a state in which the mandible of the patient naturally bites against the upper mandible.

3. The simulation device for articulator mold according to claim 1, characterized in that The multiple three-dimensional tooth model images in the three-dimensional virtual space are generated by the scanning modeling device scanning the patient's teeth in the oral cavity in the multiple tooth occlusion states, and the multiple two-dimensional occlusion images are generated by the imaging device photographing the patient's face and neck in the oral cavity in the multiple tooth occlusion states.

4. The simulation device for articulator mold according to claim 1, characterized in that In the step of generating the target position according to the plurality of reference positions and the plurality of two-dimensional occlusal images, the processor is configured to perform the following steps: An opening width corresponding to each of the plurality of two-dimensional bite images is identified from the plurality of two-dimensional bite images, and the target position is generated based on the plurality of reference positions, the plurality of two-dimensional bite images, and the opening width corresponding to each of the plurality of two-dimensional bite images, wherein the opening width is a width of an airway space formed by the epiglottis cartilage and the trachea of ​​the patient.

5. The simulation device for articulator mold according to claim 1, characterized in that In the step of generating the new three-dimensional model of the teeth corresponding to the target occlusal state according to the target position, the processor is configured to perform the following steps: A position of a mandibular model in one of the plurality of 3D dentition model images is adjusted so that the position of the dentition center point of the mandibular model in the 3D dentition model image is aligned with the target position, thereby generating the new 3D dentition model image corresponding to the target occlusal state.

6. A method for simulating an articulator mold, characterized in that: Suitable for simulating an articulator mold in a three-dimensional virtual space, wherein the simulation method includes: A processor obtains, from a plurality of three-dimensional dentition model images in the three-dimensional virtual space, a plurality of reference positions corresponding to a plurality of tooth occlusion states, wherein each of the plurality of reference positions is a position of a center point of a dentition of a mandible when an oral cavity of a patient is in the tooth occlusion state corresponding to the respective reference position. The plurality of three-dimensional dentition model images and the plurality of two-dimensional occlusion images in the three-dimensional virtual space correspond to a plurality of tooth occlusion states, wherein the plurality of tooth occlusion states include a mandible in a state of maximum forward displacement, a state of maximum mouth opening, and a natural occlusion state. generating, by the processor, a target position based on the plurality of reference positions and the plurality of two-dimensional bite images, wherein the plurality of two-dimensional bite images correspond to the plurality of tooth occlusion states, wherein the target position is a position of a center point of the dentition of the mandible when the patient's oral cavity is in a target occlusion state, wherein the target occlusion state indicates that an epiglottis and a trachea of ​​the patient are in a relatively open state; and The processor generates a new 3D tooth model corresponding to the target occlusal state according to the target position, and establishes an articulator target model of the new 3D tooth model.

7. The method for simulating an articulator mold according to claim 6, characterized in that: The maximum forward displacement state of the mandible refers to a state in which the mandible of the patient moves forward a maximum horizontal distance in a direction horizontal to the ground; the maximum mouth opening state refers to a state in which the mandible of the patient moves downward a maximum vertical distance in a direction perpendicular to the ground; and the natural occlusion state refers to a state in which the mandible of the patient naturally bites against the upper mandible.

8. The method for simulating an articulator mold according to claim 6, characterized in that: The multiple three-dimensional tooth model images in the three-dimensional virtual space are generated by a scanning modeling device scanning the patient's teeth in the oral cavity in the multiple tooth occlusion states, and the multiple two-dimensional occlusion images are generated by the imaging device photographing the patient's face and neck in the oral cavity in the multiple tooth occlusion states.

9. The method for simulating an articulator mold according to claim 6, characterized in that: The step of generating the target position by the processor according to the multiple reference positions and the multiple two-dimensional occlusal images includes: The processor identifies an opening width corresponding to each of the multiple two-dimensional bite images from the multiple two-dimensional bite images, and generates the target position based on the multiple reference positions, the multiple two-dimensional bite images, and the opening width corresponding to each of the multiple two-dimensional bite images, wherein the opening width is a width of an airway space formed by the patient's epiglottis cartilage and the trachea.

10. The method for simulating an articulator mold according to claim 6, characterized in that: The step of generating the new three-dimensional model of the teeth corresponding to the target occlusal state according to the target position includes: The processor adjusts a position of a mandibular model in one of the multiple three-dimensional tooth model images so that the position of the center point of the teeth of the mandibular model in the three-dimensional tooth model image is aligned with the target position, thereby generating the new three-dimensional tooth model image corresponding to the target occlusal state.

Images