Dental implant virtual implantation method and device

Abstract

The invention relates to the field of oral medical treatment, and particularly provides a dental implant virtual implantation method and device, and the method comprises the steps: importing an overall three-dimensional model of a tooth and a jaw bone where the tooth is located; an observation surface is determined from the overall three-dimensional model, and the observation surface comprises an edentulous area, distal adjacent teeth of the edentulous area and mesial adjacent teeth of the edentulous area; determining a first point and a second point at different positions in the observation surface according to the mesial adjacent teeth and the distal adjacent teeth; determining an implantation site based on the first point and the second point; determining an implantation direction based on the implantation site; and implanting the implant into an edentulous area according to the implantation site and the implantation direction. Therefore, the two points are determined according to the mesial adjacent teeth and the distal adjacent teeth in the tooth missing area, and the implantation site and the implantation direction are determined on the basis of the two points, so that the virtual implantation of the dental implant can be reliably and accurately realized, and the implantation effect can be improved.

Description

Technical Field

[0001] The present invention relates to the field of oral medical technology, and in particular to a dental implant virtual implantation method and a dental implant virtual implantation device. Background Art

[0002] Virtual implant technology uses advanced imaging and simulation software to provide a risk-free preview platform for dental implants, which can accurately determine the risk of complications such as bone perforation. In addition, this technology has also promoted the development of new implant designs and implant technologies, providing patients with safer, more effective and personalized treatment options.

[0003] Therefore, it is crucial to design a reliable virtual dental implant placement plan. Summary of the invention

[0004] In order to solve one of the above technical problems, the present invention proposes the following technical solution.

[0005] The first aspect of the present invention proposes a method for virtual implantation of a dental implant, comprising the following steps: importing an overall three-dimensional model of teeth and the jawbone in which they are located; determining an observation plane from the overall three-dimensional model, wherein the observation plane includes an edentulous area, distal adjacent teeth, and mesial adjacent teeth; determining a first point and a second point of different positions in the observation plane according to the mesial adjacent teeth and the distal adjacent teeth; determining an implantation site based on the first point and the second point; determining an implantation direction based on the implantation site; and implanting the implant into the edentulous area according to the implantation site and the implantation direction.

[0006] In addition, the virtual dental implantation method according to the above embodiment of the present invention may also have the following additional technical features.

[0007] According to one embodiment of the present invention, determining the observation plane from the overall three-dimensional model includes: determining the jaw plane in the overall three-dimensional model, and adjusting the overall three-dimensional model so that the jaw plane is in a horizontal state; vertically moving the jaw plane in a horizontal state from a first direction of the teeth to a second direction until the roots of the adjacent teeth in the edentulous area and the cortical bone plates on the buccal and palatal sides of the edentulous area appear on the moved jaw plane at the same time, stopping the movement, and using the jaw plane after the movement as the observation plane, wherein the second direction is different from the first direction.

[0008] According to one embodiment of the present invention, the first point is the distal vertex of the root of the mesial adjacent tooth in the observation plane, and the second point is the mesial vertex of the root of the distal adjacent tooth in the observation plane.

[0009] According to one embodiment of the present invention, determining the implantation site based on the first point and the second point includes: determining a first midpoint of a line connecting the first point and the second point; drawing a straight line perpendicular to the line through the first midpoint, the straight line intersecting the cortical bone plate on the buccal and palatal sides of the edentulous area at two points respectively, and determining a second midpoint of the line between the two points as the implantation site.

[0010] According to one embodiment of the present invention, the implantation direction is determined based on the implantation site, including: adjusting the observation plane multiple times until a condition is met, and determining a point in the adjusted observation plane after each adjustment to determine a plane formed by all points; drawing a straight line perpendicular to the plane from the implantation site, and the position of the straight line represents the implantation direction.

[0011] According to one embodiment of the present invention, three points are determined based on the jaw plane, including: adjusting the overall three-dimensional model of the teeth and the jaw bones in which they are located so that the jaw plane of the model is in a horizontal state, and moving the jaw plane in a horizontal state to obtain a horizontal plane where the root apex of the mesial adjacent tooth in the edentulous area is located; vertically moving the horizontal plane where the root apex of the mesial adjacent tooth is located from the second direction of the tooth to the first direction until the enamel-cementum junction at the buccal apex of the distal adjacent tooth appears to obtain a first plane, and determining a third point in the first plane; vertically moving the horizontal plane where the root apex of the mesial adjacent tooth is located from the second direction of the tooth to the first direction until the enamel-cementum junction at the palatal apex of the distal adjacent tooth appears to obtain a second plane, and determining a fourth point in the second plane; vertically moving the horizontal plane where the root apex of the mesial adjacent tooth is located from the second direction of the tooth to the first direction until the enamel-cementum junction at the mesial apex of the mesial adjacent tooth appears to obtain a third plane, and determining a fifth point in the third plane, wherein the third plane, the second plane and the first plane are different from each other, and the second direction is different from the first direction.

[0012] According to one embodiment of the present invention, the third point is the buccal apex of the distal adjacent tooth-enamel cementum junction, the fourth point is the palatal apex of the distal adjacent tooth-enamel cementum junction, and the fifth point is the mesial apex of the mesial adjacent tooth-enamel cementum junction.

[0013] According to one embodiment of the present invention, the overall three-dimensional model is obtained by using three-dimensional design software, wherein the three-dimensional design software is ProPlan software.

[0014] According to one embodiment of the present invention, the virtual dental implantation method is implemented by implantation software, wherein the implantation software is SimPlant software.

[0015] The second aspect of the present invention proposes a virtual implantation device for dental implants, comprising: an import module for importing an overall three-dimensional model of teeth and the jawbone in which they are located; a first determination module for determining an observation plane from the overall three-dimensional model, wherein the observation plane includes an edentulous area, distal adjacent teeth and mesial adjacent teeth; a second determination module for determining a first point and a second point of different positions in the observation plane according to the mesial adjacent teeth and the distal adjacent teeth; a third determination module for determining an implantation site based on the first point and the second point; a fourth determination module for determining an implantation direction based on the implantation site; and a virtual implantation module for implanting the implant into the edentulous area according to the implantation site and the implantation direction.

[0016] The technical solution of the embodiment of the present invention determines two points according to the mesial neighboring teeth and the distal neighboring teeth in the edentulous area, and determines the implantation site and implantation direction based on the two points, which is conducive to reliable and accurate virtual implantation of dental implants, thereby helping to improve the implantation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Flow chart of a virtual dental implantation method according to an embodiment of the present invention.

[0018] Figure 2 It is a schematic diagram of the structure of teeth in the observation surface according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the location of an implantation site p according to an example of the present invention.

[0020] Figure 4 This is a schematic diagram of the position of the buccal vertex f of the cementoenamel junction of the distal adjacent tooth in the first plane of an example of the present invention.

[0021] Figure 5 This is a schematic diagram of the position of the palatal vertex g of the cementoenamel junction of the distal adjacent tooth in the second plane of an example of the present invention.

[0022] Figure 6 This is a schematic diagram of the position of the mesial vertex h of the mesial adjacent tooth enamel-cementum junction in the third plane of an example of the present invention.

[0023] Figure 7 Schematic diagram of plane P and straight line D according to an example of the present invention.

[0024] Figure 8 4 is a structural block diagram of a virtual dental implantation device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] Figure 1 Flow chart of a virtual dental implantation method according to an embodiment of the present invention.

[0027] like Figure 1 As shown, the dental implant virtual implantation method includes the following steps S1 to S6.

[0028] The dental implant virtual implantation method according to the embodiment of the present invention can be applied to implantation software (a software for realizing the virtual implantation of dental implants) and executed by the implantation software.

[0029] In one example, the implant software may be SimPlant software, such as SimPlant Pro 11.04.

[0030] S1, import the overall 3D model of the teeth and the jaw where they are located.

[0031] In one example, an overall three-dimensional model of the teeth and the jawbone in which they are located may be obtained through three-dimensional design software, and the three-dimensional design software may be ProPlan software, such as ProPlan CMF 3.0.

[0032] Specifically, the patient's digital teeth and the overall three-dimensional model of the jaw where they are located can be obtained by any feasible means and imported into the implant software. For example, the patient is CT scanned and the image data is imported into the ProPlan software, and the three-dimensional design is performed to obtain the overall three-dimensional model of the jaw where they are located and the auxiliary plane, which is then imported into the SimPlant software, and the subsequent steps are performed in the SimPlant software to achieve virtual implantation of the implant.

[0033] S2, determining an observation plane from the overall three-dimensional model, wherein the observation plane includes the edentulous area, the distal adjacent teeth, and the mesial adjacent teeth.

[0034] The observation plane refers to a plane adjusted from the jaw plane and can simultaneously observe the roots of the adjacent teeth in the edentulous area and the buccal and palatal cortical bone plates in the edentulous area.

[0035] Specifically, after the implant software obtains the overall three-dimensional model, it can determine the corresponding observation surface from the overall three-dimensional model in response to the user operation.

[0036] S3, determining a first point and a second point of different positions in the observation plane according to the mesial adjacent tooth and the distal adjacent tooth.

[0037] Among them, the first point and the second point are two points at different positions in the observation plane, and can be located on both sides of the edentulous area respectively. For example, the first point can be located at the mesial adjacent tooth, and the second point can be located at the distal adjacent tooth.

[0038] Specifically, after the observation surface is determined, the mesial neighboring teeth and the distal neighboring teeth in the edentulous area in the observation surface are further determined, and two points, namely the first point and the second point, are determined according to the specific positions of the mesial neighboring teeth and the distal neighboring teeth.

[0039] S4, determining an implantation site based on the first point and the second point.

[0040] S5, determining the implantation direction based on the implantation site.

[0041] S6, implant the implant into the edentulous area according to the implantation site and implantation direction.

[0042] Specifically, first, an implantation site is determined based on the first point and the second point by connecting the midpoint, and then the implantation direction is determined based on the implantation site. Finally, according to the implantation site and the implantation direction, the pre-designed and prepared implant can be accurately implanted into the edentulous area, realizing the virtual implantation of dental implants in the implantation software.

[0043] It should be noted that when implanting the implant according to the implantation site and implantation direction, the implantation depth also needs to be considered. The implantation depth can be determined according to the specific brand and model of the implant, and the embodiment of the present invention does not impose any limitation on this.

[0044] In general, two points are determined based on the mesial and distal adjacent teeth in the edentulous area, and the implantation site and implantation direction are positioned in turn based on these two points. On this basis, virtual implantation is achieved, which not only realizes effective virtual implantation, but also ensures the accuracy of virtual implantation, which is beneficial to ensure the safety, success and stability of subsequent implant implantation and improve the implantation effect.

[0045] Therefore, the virtual implantation method of dental implants in the embodiment of the present invention determines two points according to the mesial neighboring tooth and the distal neighboring tooth, and determines the implantation site and implantation direction based on the two points, which is conducive to reliably and accurately realizing the virtual implantation of dental implants, thereby helping to improve the implantation effect.

[0046] In one embodiment, in the above step S2, determining the observation plane from the overall three-dimensional model may include: determining the jaw plane in the overall three-dimensional model, and adjusting the overall three-dimensional model so that the jaw plane is in a horizontal state; vertically moving the jaw plane in the horizontal state from a first direction of the teeth to a second direction until the roots of the adjacent teeth in the edentulous area and the cortical bone plates on the buccal and palatal sides of the edentulous area appear on the moved jaw plane at the same time, stopping the movement, and using the jaw plane after the movement as the observation plane, wherein the second direction is different from the first direction.

[0047] It should be noted that, in the initial state, the jaw plane in the overall three-dimensional model may not be in a horizontal state, and it needs to be adjusted so that the jaw plane coincides with the horizontal plane or is in a horizontal state. On this basis, the horizontal jaw plane is moved vertically.

[0048] The vertical movement from the first direction to the second direction of the tooth is an up-and-down movement in the vertical direction, and the first direction and the second direction are determined specifically according to the location of the edentulous area. When the edentulous area is located in the upper jaw, the first direction is the crown direction, and the second direction is the root direction. At this time, the horizontal jaw plane is moved vertically from the crown direction of the tooth to the root direction. When the edentulous area is located in the lower jaw, the first direction is the root direction, and the second direction is the crown direction. At this time, the horizontal jaw plane is moved vertically from the root direction of the tooth to the crown direction.

[0049] In one example, if Figure 2 and Figure 3 As shown, the first point is the distal vertex a of the root of the mesial adjacent tooth in the observation plane, and the second point is the mesial vertex b of the root of the distal adjacent tooth in the observation plane.

[0050] Furthermore, the above-mentioned step S4, i.e. determining the implantation site based on the first point and the second point, may include: determining a first midpoint of the line between the first point and the second point; drawing a straight line perpendicular to the line through the first midpoint, the straight line intersecting the cortical bone plate on the buccal and palatal sides of the edentulous area at two points respectively, and determining the second midpoint of the line between the two points as the implantation site.

[0051] The first midpoint refers to the midpoint of the line connecting the first point and the second point. The second midpoint refers to the midpoint between the two points at which the straight line intersects with the cortical bone plate on the buccal and palatal sides of the edentulous area.

[0052] Specifically, after obtaining the overall three-dimensional model, select and determine the jaw plane in the model. After determining the jaw plane and adjusting it to a horizontal state, when the edentulous area is located in the maxilla, move the horizontal jaw plane vertically from the crown direction of the tooth to the root direction until the roots of the adjacent teeth in the edentulous area and the cortical bone plates on the buccal and palatal sides appear or are clearly observed at the same time. Stop moving, and use the moved jaw plane as the observation plane to obtain the observation plane. Determine the distal vertex a of the root of the mesial adjacent tooth and the mesial vertex b of the root of the distal adjacent tooth in the observation plane. a is the first point, b is the second point, and the specific position is referenced. Figure 2 and Figure 3 .

[0053] Reference Figure 2 and Figure 3 After locating points a and b, obtain and locate the first midpoint c of the line ab between points a and b. Draw a straight line perpendicular to the line ab through the first midpoint c, which intersects the cortical bone plate on the buccal and palatal sides of the edentulous area at two points d and e respectively, obtain and locate the second midpoint p of the line between points d and e, and use point p as the implantation site so that the implant is located in the center of the jawbone and in a safe position after implantation.

[0054] use Figure 3 The point p shown is used as the implantation site in order to place the implant in the center of the jawbone as far as possible after implantation, and to maintain a certain safe distance from the labial and lingual cortical bone plates and the mesial and distal tooth roots. When implanting the implant screw, it is important to implant it in the center of the jawbone in many aspects, which is crucial for the success of the implantation and the long-term stability of the implant. Specifically, it is: (1) Stability and support.

[0055] Evenly distribute stress: The implant is located in the center of the jawbone, which can evenly disperse the stress during chewing and avoid stress concentration, thereby reducing bone absorption and implant loosening.

[0056] Optimal bone contact: The center of the jawbone generally has higher bone density, which provides better support for the implant and allows the implant to better integrate with the bone tissue.

[0057] (2) Biomechanical advantages.

[0058] Anti-rotation ability: For implants placed in the center, the surrounding bone can provide stronger anti-rotation ability, ensuring that the implant remains stable during chewing.

[0059] Long-term stability: A central location generally provides better primary stability, which is important for the long-term success of the implant.

[0060] (3) Anatomical considerations

[0061] Avoid critical structures: When implanting the implant, the precise center position can help avoid important anatomical structures in the jaw, such as the alveolar nerve, maxillary sinus, etc., avoid bone perforation and adjacent tooth root damage, and reduce risks and complications.

[0062] Symmetrical esthetics: Centrally located implants help achieve symmetry in tooth arrangement, thus improving esthetics.

[0063] (4) Predictability of implantation operations.

[0064] Standardized procedures: Placing the implant in the center of the jawbone helps to standardize the process, increasing the predictability and success of the procedure.

[0065] Reduce failure rate: Accurate positioning and implant center position can reduce complications after implant restoration, such as implant failure, bone resorption, etc., and improve the overall treatment effect.

[0066] (5) Promote bone healing.

[0067] Better bone integration: Centrally located implants can better form a tight bond with bone tissue during the initial healing phase, improving implant stability and long-term results.

[0068] Reduce bone loss: Accurate implantation can reduce postoperative bone loss, maintain bone mass and bone density, and contribute to the long-term stability of the implant.

[0069] Therefore, using point p as the implantation site for virtual implantation can ensure the reliability and accuracy of the virtual implantation, and can also ensure the stability of the implant after virtual implantation.

[0070] It should be noted that after the implantation site at the center of the jaw is determined, in order to further improve the success rate of virtual implantation and reduce complications, the implantation direction can be determined based on the implantation site.

[0071] That is, in one embodiment, the above-mentioned step S4, i.e. determining the implantation direction based on the implantation site, may include: determining the jaw plane in the overall three-dimensional model; determining three points based on the jaw plane, and determining a plane formed by the three points; drawing a straight line perpendicular to the plane from the implantation site, and the position of the straight line represents the implantation direction.

[0072] In one example, determining three points based on the jaw plane may include: The overall three-dimensional model of the teeth and the jaws in which they are located is adjusted so that the jaw plane of the model is in a horizontal state, and the jaw plane in a horizontal state is moved to obtain the horizontal plane where the root apex of the mesial adjacent tooth in the edentulous area is located; The horizontal plane where the root tip of the mesial adjacent tooth is located is vertically moved from the second direction of the tooth to the first direction until the cementoenamel junction at the buccal vertex of the distal adjacent tooth appears to obtain the first plane, and the third point is determined in the first plane; The horizontal plane where the root tip of the mesial adjacent tooth is located is vertically moved from the second direction of the tooth to the first direction until the cementoenamel junction at the palatal apex of the distal adjacent tooth appears to obtain the second plane, and the fourth point is determined in the second plane; The horizontal plane where the root apex of the mesial adjacent tooth is located is vertically moved from the second direction of the tooth to the first direction until the enamel-cementum junction at the mesial apex of the mesial adjacent tooth appears to obtain a third plane, and the fifth point is determined in the third plane, wherein the third plane, the second plane and the first plane are different, and the second direction is different from the first direction.

[0073] It should be noted that, in the initial state, the jaw plane in the overall three-dimensional model may not be in a horizontal state, and it needs to be adjusted so that the jaw plane coincides with the horizontal plane or is in a horizontal state. On this basis, the horizontal jaw plane is moved in the vertical direction to obtain the horizontal plane where the mesial adjacent tooth root apex of the edentulous area is located, and then the horizontal plane where the mesial adjacent tooth root apex of the edentulous area is located is moved vertically from the second direction of the tooth to the first direction.

[0074] Among them, the vertical movement from the second direction of the tooth to the first direction is an up and down movement in the vertical direction, and the first direction and the second direction are determined specifically according to the location of the edentulous area. When the edentulous area is located in the maxilla, the first direction is the crown direction, and the second direction is the root direction. At this time, the horizontal plane where the root tips of the mesial adjacent teeth in the edentulous area are located is moved vertically from the heel direction of the tooth to the crown direction. When the edentulous area is located in the mandible, the first direction is the root direction, and the second direction is the crown direction. At this time, the horizontal plane where the root tips of the mesial adjacent teeth in the edentulous area are located is moved vertically from the crown direction of the tooth to the root direction.

[0075] Further, the third point is the buccal apex of the distal adjacent tooth-enamel cementum junction, the fourth point is the palatal apex of the distal adjacent tooth-enamel cementum junction, and the fifth point is the mesial apex of the mesial adjacent tooth-enamel cementum junction.

[0076] Specifically, after locating the implantation site p, the implantation direction is located. First, the jaw plane is determined and adjusted to a horizontal state, and the horizontal jaw plane is moved vertically to obtain the horizontal plane where the root tip of the mesial adjacent tooth in the edentulous area is located, and then the horizontal plane is moved vertically one by one until the conditions are met and stopped. It can be moved three times. After each movement, a point is determined in the plane after the movement, and the plane after each movement is different, and then three points are obtained, and the three points constitute a plane. Among them, when the edentulous area is located in the maxilla, each time it moves, the horizontal plane where the root tip of the mesial adjacent tooth is located is moved vertically from the second direction of the tooth, i.e., the root direction, to the first direction, i.e., the crown direction, and a bright white high-density shadow gradually appears around the tooth root, which is the enamel shadow. In the process of moving vertically from the root direction to the crown direction, the enamel shadow first appears, which is the cementoenamel junction (the junction of enamel and cementum).

[0077] Specifically, taking the edentulous area in the maxilla as an example, the horizontal plane where the root apex of the mesial adjacent tooth is located is moved vertically from the root direction of the tooth to the crown direction until the cementoenamel junction at the buccal apex of the distal adjacent tooth appears or is clearly observed, and the following is obtained: Figure 4 The first plane shown in the figure is used to determine the buccal vertex f of the cementoenamel junction of the distal adjacent tooth in the first plane; the horizontal plane where the root apex of the proximal adjacent tooth is located is moved vertically from the root direction of the tooth to the crown direction until the cementoenamel junction at the palatal vertex of the distal adjacent tooth appears or is clearly observed, and the movement is stopped to obtain the following Figure 5 The second plane shown in the figure is used to determine the palatal vertex g of the cementoenamel junction of the distal adjacent tooth in the second plane; the horizontal plane where the root apex of the mesial adjacent tooth is located is moved vertically from the root direction of the tooth to the crown direction until the cementoenamel junction at the mesial vertex of the mesial adjacent tooth appears or is clearly observed, and the movement is stopped to obtain the following Figure 6 The third plane is shown, in which the mesial apex h of the mesial adjacent tooth enamel cementum junction is determined.

[0078] Obtain the plane P consisting of the buccal vertex f and palatal vertex g of the enamel-cementum junction of the distal adjacent tooth and the mesial vertex h of the enamel-cementum junction of the mesial adjacent tooth, as shown in Figure 7 As shown. Draw a straight line D perpendicular to the plane P from the implantation site p. This straight line D marks the implantation direction. Figure 7 .

[0079] It should be noted that the implantation site p and plane P can be located separately (in any order), and finally the specific implantation direction is determined in combination with the site p and the plane P, that is, a straight line D is drawn from the implantation site p to the plane P, and the straight line D indicates the implantation direction.

[0080] Plane P is constructed by the mesial point h and the distal points f and g. If the edentulous area, the mesial adjacent teeth of the edentulous area, and the distal adjacent teeth of the edentulous area are regarded as a whole, the P plane can reflect the mesiodistal inclination and buccolingual inclination of the whole, and thus restore the mesiodistal inclination and buccolingual inclination of the missing teeth to a certain extent.

[0081] When determining the implant placement direction, the above method is to comprehensively consider the transverse jaw curve (lateral curve) and the longitudinal jaw curve (curve in the front and back direction), and make the implant as perpendicular to the occlusal plane of the crown as possible and the force direction during occlusion. This has the following important significance: (1) Optimize biomechanical properties.

[0082] Stress distribution: The implant is perpendicular to the occlusal plane and the direction of force, which can evenly distribute the occlusal force on the implant, thereby reducing concentrated stress points, avoiding excessive stress on the implant-bone interface, and reducing the risk of implant loosening and bone resorption.

[0083] Reduce shear force: Vertical implantation can effectively reduce the impact of shear force, because shear force is more destructive to bone tissue. Vertical force can make bone tissue withstand more favorable compressive stress, promote bone remodeling and implant stability.

[0084] (2) Improve implant stability.

[0085] Initial stability: The correct implantation direction can improve the initial stability of the implant because the force direction is more reasonable, reducing lateral force and uneven stress concentration.

[0086] Long-term stability: During the bone healing process around the implant, implants perpendicular to the force direction can better ensure long-term stability and durability, and reduce the possibility of implant failure.

[0087] (3) Ensure functionality and aesthetics. Occlusal function: The correct implantation direction helps to restore and maintain normal occlusal function and avoid problems such as occlusal abnormalities and tooth wear caused by incorrect direction.

[0088] Aesthetic effect: In the aesthetic zone, the correct implant direction can ensure the position and angle of the crown so that it is consistent with the surrounding natural teeth and improve the aesthetic effect.

[0089] (4) Prevent complications.

[0090] Implant breakage: Incorrect implantation direction may cause fatigue breakage of the implant under the action of occlusal force. Vertical implantation can reduce the fatigue stress of the implant and reduce the risk of breakage.

[0091] Bone loss: unreasonable force direction will lead to stress concentration in bone tissue and increase the risk of bone resorption. Implantation perpendicular to the occlusal plane can reduce bone loss, maintain bone mass and bone density around the implant, and reduce the incidence of implant loosening.

[0092] (5) Improve surgical and repair processes.

[0093] Surgery simplification: Considering the transverse and longitudinal jaw curves and making the implant perpendicular to the occlusal plane can make the surgical process more standardized and simplified, and improve the predictability and success rate of the surgery.

[0094] Easy restoration: The implant is in the correct direction, which makes position adjustment and crown production during the restoration process more convenient, ensuring the accuracy and stability of the restoration.

[0095] Therefore, using the position of the straight line D as the implantation direction for virtual implantation can further ensure the reliability and accuracy of the virtual implantation, and can also further ensure the stability of the implant after virtual implantation.

[0096] In summary, the embodiments of the present invention achieve reliable and accurate virtual implantation of dental implants, which can ensure the safety, success and stability of dental implantation and reduce complications.

[0097] Corresponding to the dental implant virtual implantation method of the above embodiment, the present invention further provides a dental implant virtual implantation device.

[0098] Figure 8 4 is a structural block diagram of a virtual dental implantation device according to an embodiment of the present invention.

[0099] like Figure 8 As shown, the Figure 8 The structural block diagram of the dental implant virtual implantation device according to an embodiment of the present invention includes an import module 1 , a first determination module 2 , a second determination module 3 , a third determination module 4 , a fourth determination module 5 and a virtual implantation module 6 .

[0100] Among them, the import module 1 is used to import the overall three-dimensional model of teeth and the jaw in which they are located; the first determination module 2 is used to determine the observation plane from the overall three-dimensional model, wherein the observation plane includes the edentulous area, the distal adjacent teeth and the mesial adjacent teeth in the edentulous area; the second determination module 3 is used to determine the first point and the second point of different positions in the observation plane according to the mesial adjacent teeth and the distal adjacent teeth; the third determination module 4 is used to determine the implantation site based on the first point and the second point; the fourth determination module 5 is used to determine the implantation direction based on the implantation site; the virtual implantation module 6 is used to implant the implant into the edentulous area according to the implantation site and the implantation direction.

[0101] In one embodiment of the present invention, the first determining module 2 is specifically configured to: Determining a jaw plane in the overall three-dimensional model, and adjusting the overall three-dimensional model so that the jaw plane is in a horizontal state; The jaw plane in a horizontal state is vertically moved from a first direction of the teeth to a second direction until the roots of the adjacent teeth in the edentulous area and the cortical bone plates on the buccal and palatal sides of the edentulous area appear on the moved jaw plane at the same time, then the movement is stopped and the jaw plane after the movement is used as the observation plane, wherein the second direction is different from the first direction.

[0102] In one embodiment of the present invention, the third determination module 4 is specifically used to: determine the first midpoint of the line between the first point and the second point; draw a straight line perpendicular to the line through the first midpoint, the straight line intersecting the cortical bone plate on the buccal and palatal sides of the edentulous area at two points respectively, and determine the second midpoint of the line between the two points as the implantation site.

[0103] In one embodiment of the present invention, the fourth determining module 5 is specifically configured to: determining a jaw plane in the overall three-dimensional model; Three points are determined based on the jaw plane, and a plane formed by the three points is determined; a straight line perpendicular to the plane is drawn from the implantation site, and the position of the straight line indicates the implantation direction.

[0104] In one embodiment of the present invention, when the fourth determination module 5 determines the three points based on the jaw plane, it is specifically used to: The overall three-dimensional model of the teeth and the jaws in which they are located is adjusted so that the jaw plane of the model is in a horizontal state, and the jaw plane in a horizontal state is moved to obtain the horizontal plane where the root apex of the mesial adjacent tooth in the edentulous area is located; The horizontal plane where the root tip of the mesial adjacent tooth is located is vertically moved from the second direction of the tooth to the first direction until the cementoenamel junction at the buccal vertex of the distal adjacent tooth appears to obtain a first plane, and a third point is determined in the first plane; The horizontal plane where the root tip of the mesial adjacent tooth is located is vertically moved from the second direction of the tooth to the first direction until the cementoenamel junction at the palatal vertex of the distal adjacent tooth appears to obtain a second plane, and a fourth point is determined in the second plane; The horizontal plane where the root apex of the mesial adjacent tooth is located is moved vertically from the second direction of the tooth to the first direction until the enamel-cementum junction at the mesial apex of the mesial adjacent tooth appears to obtain a third plane, and a fifth point is determined in the third plane, wherein the third plane, the second plane and the first plane are different from each other, and the second direction is different from the first direction.

[0105] It should be noted that the specific implementation of the dental implant virtual implantation device can refer to the specific implementation of the dental implant virtual implantation method mentioned above, and will not be described in detail here to avoid redundancy.

[0106] The dental implant virtual implantation device of the embodiment of the present invention determines two points according to the mesial neighboring tooth and the distal neighboring tooth in the edentulous area, and determines the implantation site and implantation direction based on the two points, which is conducive to reliable and accurate virtual implantation of the dental implant, thereby helping to improve the implantation effect.

[0107] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0108] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0109] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention belong.

[0110] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0111] A person of ordinary skill in the art can understand that all or part of the steps carried by the method of the above-mentioned embodiment can be completed by instructing the relevant hardware through a program, and the program can be stored in a computer-readable storage medium, and the program, when executed, includes one or a combination of the steps of the method embodiment. In addition, each functional unit in each embodiment of the present invention can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into one module. The above-mentioned integrated module can be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.

[0112] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A virtual dental implantation method, characterized in that: The following steps are involved: Import the overall 3D model of the teeth and the jaws they are in; Determining an observation plane from the overall three-dimensional model, wherein the observation plane includes the edentulous area, the distal adjacent teeth of the edentulous area, and the mesial adjacent teeth; Determine a first point and a second point of different positions in the observation plane according to the mesial neighboring tooth and the distal neighboring tooth; determining an implantation site based on the first point and the second point; determining an implantation direction based on the implantation site; The implant is implanted into the edentulous area according to the implantation site and the implantation direction.

2. The dental implant virtual implantation method according to claim 1, characterized in that: Determining an observation surface from the overall three-dimensional model includes: Determining a jaw plane in the overall three-dimensional model, and adjusting the overall three-dimensional model so that the jaw plane is in a horizontal state; The jaw plane in a horizontal state is vertically moved from a first direction of the teeth to a second direction until the roots of the adjacent teeth in the edentulous area and the cortical bone plates on the buccal and palatal sides of the edentulous area appear on the moved jaw plane at the same time, then the movement is stopped and the jaw plane after the movement is used as the observation plane, wherein the second direction is different from the first direction.

3. The dental implant virtual implantation method according to claim 1, characterized in that: The first point is the distal vertex of the root of the mesial adjacent tooth in the observation plane, and the second point is the mesial vertex of the root of the distal adjacent tooth in the observation plane.

4. The dental implant virtual implantation method according to claim 1, characterized in that: Determining an implantation site based on the first point and the second point includes: Determine a first midpoint of a line connecting the first point and the second point; A straight line perpendicular to the connecting line is drawn through the first midpoint, and the straight line intersects the cortical bone plate on the buccal and palatal sides of the edentulous area at two points respectively, and the second midpoint of the connecting line between the two points is determined as the implantation site.

5. The dental implant virtual implantation method according to claim 1, characterized in that: Determining the implantation direction based on the implantation site includes: determining a jaw plane in the overall three-dimensional model; Determine three points based on the jaw plane, and determine a plane formed by the three points; A straight line is drawn from the implantation site perpendicular to the plane, and the position of the straight line indicates the implantation direction.

6. The dental implant virtual implantation method according to claim 5, characterized in that: Three points are determined based on the jaw plane, including: The overall three-dimensional model of the teeth and the jaws in which they are located is adjusted so that the jaw plane of the model is in a horizontal state, and the jaw plane in a horizontal state is moved to obtain the horizontal plane where the root apex of the mesial adjacent tooth in the edentulous area is located; The horizontal plane where the root tip of the mesial adjacent tooth is located is vertically moved from the second direction of the tooth to the first direction until the cementoenamel junction at the buccal vertex of the distal adjacent tooth appears to obtain a first plane, and a third point is determined in the first plane; The horizontal plane where the root tip of the mesial adjacent tooth is located is vertically moved from the second direction of the tooth to the first direction until the cementoenamel junction at the palatal vertex of the distal adjacent tooth appears to obtain a second plane, and a fourth point is determined in the second plane; The horizontal plane where the root apex of the mesial adjacent tooth is located is moved vertically from the second direction of the tooth to the first direction until the enamel-cementum junction at the mesial apex of the mesial adjacent tooth appears to obtain a third plane, and a fifth point is determined in the third plane, wherein the third plane, the second plane and the first plane are different from each other, and the second direction is different from the first direction.

7. The dental implant virtual implantation method according to claim 6, characterized in that: The third point is the buccal apex of the enamel-cementum junction of the distal adjacent tooth, the fourth point is the palatal apex of the enamel-cementum junction of the distal adjacent tooth, and the fifth point is the mesial apex of the enamel-cementum junction of the mesial adjacent tooth.

8. The dental implant virtual implantation method according to claim 2, characterized in that: The overall three-dimensional model is obtained through three-dimensional design software, wherein the three-dimensional design software is ProPlan software.

9. The dental implant virtual implantation method according to claim 1, characterized in that: It is realized through implantation software, wherein the implantation software is SimPlant software.

10. A virtual dental implantation device, characterized in that: include: Import module, used to import the overall 3D model of the teeth and the jaws in which they are located; A first determination module is used to determine an observation plane from the overall three-dimensional model, wherein the observation plane includes an edentulous area, a distal adjacent tooth, and a mesial adjacent tooth; A second determination module is used to determine a first point and a second point of different positions in the observation plane according to the mesial neighboring tooth and the distal neighboring tooth; a third determination module, configured to determine an implantation site based on the first point and the second point; a fourth determination module, configured to determine an implantation direction based on the implantation site; A virtual implantation module is used to implant the implant into the edentulous area according to the implantation site and the implantation direction.

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