Methods for fabricating anatomical healing abutment kits and anatomical healing abutment kits

Abstract

This application provides a method for fabricating a pre-made anatomical healing abutment kit and the pre-made anatomical healing abutment kit itself. The method includes: generating grouping and classification rules for tooth cervical morphology based on a tooth cervical morphology database; designing and fabricating an anatomical healing abutment morphology model set according to the grouping and classification rules; and prefabricating a pre-made anatomical healing abutment kit containing multiple models based on the anatomical healing abutment morphology model set. The pre-made anatomical healing abutments in the kit have group numbers and models corresponding to the grouping and classification rules. According to the technical solution of this application, the morphology of the critical transgingival region of the healing abutment can achieve a high degree of fit with the ideal transgingival contour, eliminating the need for additional treatment procedures.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oral medicine, in particular to a method for making and selecting an anatomic healing abutment finished product kit and an anatomic healing abutment finished product kit. BACKGROUND

[0002] The implant tooth transgingival contour refers to the contour feature from the implant platform to the tooth transgingival contour. It includes the key area of 1.5 mm below the gum margin and the secondary key area from 1.5 mm below the gum margin to the implant platform, which has an important influence on the health and stability of the soft and hard tissue around the implant, the aesthetics and function of the denture, and the healing abutment is the main component of the transgingival contour.

[0003] At present, the existing finished product healing abutment of various implant brands on the market is a cylinder or a cone column with different diameters and different transgingival heights, and the transgingival contour formed has a great difference from the natural tooth neck transgingival contour. In clinical application, the existing finished product healing abutment has the following problems: 1) the implant tooth crown formed according to the existing finished product healing abutment has a small neck, the gum papilla lacks support, the triangular gap is too large, food impaction is caused and the aesthetics is affected; 2) the implant tooth crown formed according to the normal anatomic transgingival contour causes difficulty in wearing and pain due to the large difference between the implant tooth transgingival key area shape and the actual transgingival contour; 3) an additional treatment procedure is needed to use a temporary resin denture to shape the transgingival contour.

[0004] Therefore, a technical solution is needed to make the transgingival key area shape of the healing abutment highly adaptable to the ideal transgingival contour without the need for an additional treatment procedure. SUMMARY

[0005] The present application aims to provide a method for making and selecting an anatomic healing abutment finished product kit and an anatomic healing abutment finished product kit, so that the transgingival key area shape of the healing abutment can be highly adaptable to the ideal transgingival contour without the need for an additional treatment procedure.

[0006] According to an aspect of the present application, a method for making an anatomic healing abutment finished product kit is provided, comprising:

[0007] Based on a tooth neck shape database, a grouping and typing rule for tooth neck shape is generated, which divides teeth into different groups and types;

[0008] According to the grouping and typing rule for tooth neck shape, an anatomic healing abutment shape model set is designed and made;

[0009] Based on the anatomic healing abutment shape model set, an anatomic healing abutment finished product kit containing multiple models is prefabricated,

[0010] The anatomical healing abutment finished product in the anatomical healing abutment finished product kit has a grouping number and a model number corresponding to the grouping and typing rule, the anatomical healing abutment finished products with the same grouping number have the same gingival key area cross-section profile characteristics, the anatomical healing abutment finished products with the same model number have the same gingival key area cross-section size characteristics, and the anatomical healing abutment finished product further has a sub-model number representing the gingival height.

[0011] According to some embodiments, the foregoing method further comprises pre-establishing the tooth neck morphology database:

[0012] The tooth neck morphology data is collected by means of an oral scan image or a cone beam computed tomography image;

[0013] The tooth neck morphology database is established based on the collected tooth neck morphology data.

[0014] According to some embodiments, the tooth neck morphology database comprises a plurality of data units of different tooth positions, each data unit corresponding to a tooth position and having tooth position annotation information.

[0015] According to some embodiments, based on the tooth neck morphology database, a grouping and typing rule for tooth neck morphology is generated, comprising:

[0016] Based on the tooth neck morphology database, tooth neck morphology features are extracted from the data units in the tooth neck morphology database to generate the grouping and typing rule for tooth neck morphology, the grouping and typing rule for tooth neck morphology comprising tooth neck morphology grouping rules and typing rules within the groups.

[0017] According to some embodiments, the tooth neck morphology features comprise:

[0018] Tooth neck profile features, including the ratio of mesial-distal diameter to buccal-lingual diameter, the gingival key area cross-section profile features corresponding to the tooth neck profile features;

[0019] Tooth neck size features, including the mesial-distal diameter, the gingival key area cross-section size features corresponding to the tooth neck size features.

[0020] According to some embodiments, the tooth neck profile features further comprise tooth neck cross-sectional area, tooth neck cross-sectional perimeter, mesial-distal diameter, and buccal-lingual diameter.

[0021] According to some embodiments, the grouping rule comprises grouping the plurality of different tooth positions according to the tooth neck profile features of the plurality of different tooth positions, each group comprising at least one tooth position;

[0022] The typing rule comprises typing the at least one tooth site in a group according to the tooth neck size feature.

[0023] According to some embodiments, the transgingival height comprises the height of the transgingival key area and the sub-key area.

[0024] According to some embodiments, the anatomical healing abutment finished product kit is used for implant restoration of the posterior tooth site edentulous area.

[0025] According to another aspect of the present application, an anatomical healing abutment finished product kit is provided, which is obtained by the method of any one of the preceding.

[0026] According to another aspect of the present application, a method for selecting an anatomical healing abutment finished product is provided, comprising:

[0027] Obtaining tooth site information of the implant tooth site, the tooth site information comprising tooth site number, mesiodistal distance, and height from the plane of the implant to the gum margin;

[0028] Comparing the tooth site information with an anatomical healing abutment shape model set to obtain a comparison result;

[0029] According to the comparison result, selecting a corresponding target healing abutment finished product from the anatomical healing abutment finished product kit,

[0030] wherein,

[0031] The anatomical healing abutment shape model set corresponds to the anatomical healing abutment finished product kit,

[0032] The anatomical healing abutment finished product kit is grouped according to the transgingival key area cross-sectional profile feature, each group corresponds to at least one tooth site, and each group is typed according to the transgingival key area cross-sectional size feature, each type of anatomical healing abutment finished product comprises a plurality of sub-types with different transgingival heights, and the transgingival height comprises the height of the transgingival key area and the sub-key area.

[0033] According to some embodiments, selecting a corresponding target healing abutment finished product from the anatomical healing abutment finished product kit comprises:

[0034] Determining the group where the target healing abutment finished product is located according to the tooth site number;

[0035] Determining the type of the target healing abutment finished product according to the mesiodistal distance of the implant tooth site;

[0036] Determining the transgingival height of the target healing abutment finished product according to the height from the plane of the implant to the gum margin of the implant tooth site, thereby determining the sub-type.

[0037] According to another aspect of the present application, there is provided a computing device comprising:

[0038] a processor; and

[0039] a memory storing a computer program which, when executed by the processor, causes the processor to perform the method of any one of the preceding aspects.

[0040] According to another aspect of the present application, there is provided a non-transitory computer readable storage medium having computer readable instructions stored thereon which, when executed by a processor, cause the processor to perform the method of any one of the preceding aspects.

[0041] According to an embodiment of the present application, by constructing a tooth neck morphology database, a set of anatomic healing abutment morphology models is determined, and an anatomic healing abutment finished product kit is produced according to the set of anatomic healing abutment morphology models, so as to provide an anatomic healing abutment close to the real tooth neck morphology of the implant tooth site for the patient. By establishing a set of anatomic healing abutment morphology models covering various tooth sites and neck morphologies, and combining with individual data of the patient for accurate matching, the selected healing abutment is closer to the real transgingival contour, which is helpful for the healing of the gingiva according to the ideal transgingival contour after the second stage operation, and forms good soft tissue closure and support.

[0042] According to some embodiments, the scheme of the present application is used for posterior teeth. The aesthetic requirements of posterior teeth are not as high as those of anterior teeth, and as long as the basic morphology of the transgingival contour is correct, it can play a role in supporting the neck gingiva, gingival papilla, maintaining health, and preventing food impaction, and does not require complete individualization coordination with adjacent teeth.

[0043] According to some embodiments, the method of the present application also has clinical significance for the measurement of the contour of the neck of the anterior tooth and the anatomic healing abutment. Although the anterior tooth has high aesthetic requirements and the morphology of the gingival margin changes a lot, the clinician generally produces a temporary implant resin tooth after the second stage operation to shape the transgingival contour, so as to achieve coordination with adjacent teeth, but the scheme of the present application can be used for preliminary shaping of the transgingival contour when bilateral anterior teeth are missing, and can be used to close the wound and support the neck contour when immediate implantation does not meet the requirements of immediate repair.

[0044] It should be understood that the above general description and the following detailed description are only exemplary and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced as follows.

[0046] Figure 1 A flow chart of a method for producing an anatomic healing abutment finished product is shown according to an example embodiment.

[0047] Figure 2 An example diagram of a data unit in a natural tooth cervical form database according to an example embodiment is shown.

[0048] Figure 3 An example diagram of a data unit in a natural tooth cervical form database according to another example embodiment is shown.

[0049] Figure 4 A schematic diagram of natural tooth cervical form measurement according to another example embodiment is shown.

[0050] Figure 5 An example diagram of form models corresponding to 3 types included in the 4th group of the anatomical healing abutment form model set according to Embodiment 1 is shown.

[0051] Figure 6 A schematic diagram of the mesiodistal measurement position in a data unit according to an example embodiment is shown.

[0052] Figure 7 A schematic diagram of the transgingival height measurement position in a data unit according to an example embodiment is shown.

[0053] Figure 8 A schematic diagram of an anatomical healing abutment finished product according to an example embodiment is shown.

[0054] Figure 9 A flowchart of a method of selecting an anatomical healing abutment finished product according to an example embodiment is shown.

[0055] Figure 10 A block diagram of a computing device according to an example embodiment is shown. DETAILED DESCRIPTION

[0056] Example embodiments now will be described more fully hereinafter with reference to the accompanying drawings. Example embodiments, however, can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of example embodiments to those skilled in the art. Like reference numerals refer to like elements throughout the several views and the description.

[0057] Moreover, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the application can be practiced without one or more of the specific details, or with other methods, components, materials, and so forth. In other instances, well-known structures, devices, and so forth have not been shown or described in detail to avoid obscuring aspects of the application.

[0058] The block diagrams shown in the drawings are merely functional entities, and do not necessarily have to correspond to physically independent entities. That is, the functional entities can be implemented in the form of software, or in at least one hardware module or integrated circuit, or in different network and / or processor devices and / or microcontroller devices.

[0059] The flowcharts shown in the drawings are merely exemplary illustrations, and do not necessarily include all contents and operations / steps, nor are they necessarily executed in the order described. For example, some operations / steps can be further divided, and some operations / steps can be combined or partially combined, so the actual execution order can be changed according to the actual situation.

[0060] It should be understood that although the terms first, second, third, etc. can be used herein to describe various components, these components should not be limited by these terms. These terms are used to distinguish one component from another component. Therefore, the first component discussed below can be referred to as the second component without departing from the teachings of the present application concepts. As used herein, the term "and / or" includes any one and all combinations of the associated listed items.

[0061] The user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are all information and data authorized by the user or authorized by all parties, and the collection, use and processing of related data need to comply with relevant laws, regulations and standards of relevant countries and regions, and provide corresponding operation portal for user to choose authorization or refusal.

[0062] Those skilled in the art can understand that the drawings are only schematic diagrams of exemplary embodiments, and the modules or flows in the drawings are not necessarily required for implementing the present application, and therefore cannot be used to limit the protection scope of the present application.

[0063] The implant gingival contour refers to the soft tissue contour of the implant platform to the prosthetic body penetrating the gum margin. It includes the key area of 1.5mm below the gum margin and the secondary key area of 1.5mm below the gum margin to the implant platform, which has an important influence on the health and stability of the soft and hard tissue around the implant, the aesthetics and function of the denture, and the healing abutment is the main component of the gingival contour.

[0064] At present, the existing finished healing abutments of various implant brands on the market are cylindrical or conical with different diameters and different gingival penetration heights. The gingival contour formed by these finished healing abutments has a great difference from the morphology of the natural tooth neck. In the current clinical application, the commonly used techniques include direct repair scheme, model trimming scheme, personalized shaping scheme and CAD-CAM personalized healing abutment scheme.

[0065] Direct repair scheme is usually applied to posterior teeth area. The healing abutment is used to repair the gingival contour. However, the neck of the denture made according to the gingival contour of the healing abutment is usually too small, which can cause lack of support of the gum margin and papilla, excessive interproximal space, horizontal food impaction and poor aesthetics.

[0066] Model modification scheme is usually applied to posterior teeth area. The healing abutment is used to form the gingival contour and transfer to the model. The neck shape of the denture is completed by modifying the gingival contour on the model. The neck shape of the denture obtained by this method is quite different from the actual gingival contour, which causes difficulty in placing the denture and pain during clinical wearing.

[0067] Personalized shaping scheme is usually applied to the anterior teeth area with high aesthetic requirements. The gingival contour is gradually induced and shaped by a temporary resin denture to obtain a similar gingival shape to the adjacent teeth or the original gingival contour is maintained by immediate restoration after immediate implantation after tooth extraction. However, personalized customization shaping often has high cost, increases additional treatment procedures, high technical sensitivity, and long cycle.

[0068] The CAD-CAM personalized healing abutment scheme uses digital technology to copy the neck shape of the missing tooth site before tooth extraction or the mirror image of the neck shape of the contralateral homonymous tooth to make a CAD-CAM personalized healing abutment. Generally, the production of the CAD-CAM personalized healing abutment requires the investment of CAD / CAM related equipment, increases additional work procedures and costs, and has high cost. In addition, when both sides of the homonymous teeth are missing at the time of examination, the CAD-CAM personalized healing abutment cannot be implemented without personalized production reference.

[0069] Therefore, the application provides a method for producing and selecting an anatomic healing abutment kit and an anatomic healing abutment kit, so that the gingival key area shape of the healing abutment can be highly adapted to the natural tooth gingival contour without additional treatment procedures. According to the embodiments, by constructing a natural tooth neck shape database, an anatomic healing abutment shape model set is determined, and according to the anatomic healing abutment shape model set, an anatomic healing abutment kit is produced to provide an anatomic healing abutment close to the real tooth neck shape of the implant site for the patient. Compared with the existing general round abutment, the application establishes an anatomic healing abutment shape model set covering various tooth sites and neck shapes, and accurately matches the patient's individual data, so that the selected healing abutment is closer to the real gingival contour, which is helpful for the healing of the gum according to the ideal gingival contour after the second stage operation, and can restore the natural tooth neck contour in the gingival key area, support the gum margin and papilla, and improve the repair quality.

[0070] Before the embodiments of the present application are described, some terms or concepts related to the embodiments of the present application are explained.

[0071] Intraoral Scanning (IOS): A technique used to capture digital impressions of the inside of the mouth. By using a handheld scanner that is operated directly inside the patient's mouth, detailed three-dimensional images of teeth, gums, and other oral structures can be quickly captured. This technology greatly improves the efficiency and accuracy of making restorations such as crowns, bridges, inlays, and dentures, while also improving patient comfort as it avoids the discomfort that can be caused by traditional impression materials.

[0072] Cone Beam Computed Tomography (CBCT): Provides a special X-ray imaging technology that can generate three-dimensional images of the oral and facial regions. Compared with traditional two-dimensional X-ray films, CBCT can provide more detailed anatomical information, including bone structure, tooth position, and nerve path, etc. This makes it an ideal choice for making complex diagnoses and treatment plans, especially in the fields of dental implant surgery, maxillofacial surgery, etc.

[0073] The example embodiments of the present application are described below in conjunction with the accompanying drawings.

[0074] Figure 1 A flowchart of a method for making an anatomical healing abutment finished product is shown according to an example embodiment.

[0075] Referring to Figure 1 At S101, based on a natural tooth neck shape database, a grouping and typing rule for tooth neck shape is generated, which divides teeth into different groups and types.

[0076] According to some embodiments, the tooth neck morphology data is collected by means of oral scanning images or cone beam computed tomography images; and the tooth neck morphology database is established based on the collected tooth neck morphology data. For example, the tooth neck morphology features can include tooth neck contour features and tooth neck size features. The tooth neck contour features can include the ratio of mesial-distal diameter to buccal-lingual diameter, and the cross-sectional contour features of the key gingival-penetration area correspond to the tooth neck contour features; and the tooth neck size features can include the mesial-distal diameter, and the cross-sectional size features of the key gingival-penetration area correspond to the tooth neck size features. According to some embodiments, the tooth neck contour features can further include tooth neck cross-sectional area, tooth neck cross-sectional perimeter, mesial-distal diameter, and buccal-lingual diameter. Specifically, the three-dimensional morphology information of the tooth neck (enamel-cement junction and 1.5 mm coronally) of the target tooth site is obtained by collecting intraoral scanning (IOS) image data or cone beam computed tomography (CBCT) image data of the patient. The oral scanning image data can be directly obtained by a high-precision intraoral scanner, which has the advantages of non-invasiveness, convenient operation, real-time imaging, etc., and is suitable for rapid collection of tooth and gum surface morphology. The cone beam CT image data is obtained by a CBCT device, and combined with three-dimensional reconstruction technology, complete anatomical information including the tooth crown, tooth root, and alveolar bone can be obtained, which is suitable for analyzing the morphology of the tooth neck in multiple cross-sectional planes. Based on the data obtained by the above collection methods, the morphology features of the tooth gingival-penetration area are extracted, and data units are constructed in a unified format. In addition, data collection can also be performed by measuring the extracted teeth using a vernier caliper.

[0077] According to some embodiments, when measuring the contour features of the tooth neck cross-section, for teeth without periodontal disease, intact neck, and in proper arrangement, the average contour features of the gum margin and 1.5 mm below the gum margin (oral scanning) or the contour features of the enamel-cement junction and 1.5 mm coronally thereof (CBCT) can be measured, including mesial-distal diameter, buccal-lingual diameter, the ratio of the two, cross-sectional area, perimeter, etc., which correspond to the features of the key gingival-penetration area of the implant tooth. For example, the mandibular molar is approximately rectangular with the mesial-distal diameter greater than the buccal-lingual diameter, while the maxillary molar is rhombic, and the bicuspid is elliptical with the buccal-lingual diameter greater than the mesial-distal diameter.

[0078] According to some embodiments, the tooth neck morphology database includes a plurality of data units of different tooth sites, each data unit corresponding to a tooth site and having tooth site annotation information. Specifically, the tooth neck morphology database is composed of many data units, and each data unit constituting the database has a specific tooth site annotation information. The tooth site annotation information uniquely points to a tooth site in the oral cavity dentition to ensure that the data of each tooth site can be accurately identified and classified (see examples in Figure 2 and Figure 3 .

[0079] According to some embodiments, the above-mentioned data units are obtained by intraoral scanning (IOS) or cone beam computed tomography (CBCT), ensuring high precision and comprehensiveness of the data. Each data unit not only records the geometry of the gingival region of the tooth, but also includes key parameters such as mesiodistal distance, buccolingual diameter, etc., for subsequent analysis and application. By collecting data on the morphology of the neck of natural teeth and conducting statistical analysis, a database of the morphology of the neck of natural teeth can be established, providing rich and accurate basic data for the design of anatomic healing abutments, making the database have good expansibility and practicality, providing basic data support for the establishment of anatomic healing abutment morphology model set, and also providing a clinical basis for personalized model matching and product adaptation.

[0080] According to some embodiments, based on the tooth neck morphology database, tooth neck morphology features are extracted from the data units in the tooth neck morphology database to generate grouping and typing rules for tooth neck morphology. Tooth neck contour features include the ratio of mesiodistal diameter to buccolingual diameter, and the features of the gingival key area of the implant tooth correspond to the tooth neck contour features.

[0081] The grouping and typing rules for tooth neck morphology include tooth neck morphology grouping rules and typing rules within the groups. Based on the established tooth neck morphology database, grouping and typing rules for tooth neck morphology are generated to guide the construction and model division of the anatomic healing abutment morphology model set.

[0082] According to some embodiments, the grouping rules include grouping the plurality of different tooth positions according to the tooth neck contour features (e.g., the ratio of mesiodistal diameter to buccolingual diameter) of the plurality of different tooth positions, each group including at least one tooth position; and the typing rules include typing the at least one tooth position within a group according to the tooth neck size features. For example, an artificial intelligence system is used to extract and classify the morphology features of the tooth neck region of a plurality of data units in the database. The AI system can be a convolutional neural network (CNN), a support vector machine (SVM), or other machine learning models suitable for image recognition and clustering analysis. The AI system automatically extracts key features such as tooth neck contour, curvature change, mesiodistal diameter, and buccolingual diameter ratio through learning from a large number of clinical samples, and classifies the morphology based on these features. On this basis, grouping and typing rules for tooth neck morphology are developed, including grouping rules and typing rules within the groups.

[0083] According to some embodiments, the grouping rules include grouping different tooth sites included in the tooth neck morphology database, each group including at least one tooth site. The typing rules include typing different tooth neck morphologies included in the groups, each group including at least one model, and each model corresponding to a morphology model. For example, different tooth sites are divided into several groups according to position, function or morphology similarity, and each group contains at least one tooth site. For example, mandibular molars are rectangular with approximate mesiodistal diameter greater than buccolingual diameter, and maxillary molars are rhombic; bicuspid teeth are elliptical with buccolingual diameter greater than mesiodistal diameter. Each group contains at least one tooth site with similar tooth neck morphology characteristics. Within each group, further subdivide into several models according to the difference in tooth neck morphology, and each model represents a representative morphology type. For example, size typing is performed according to the mesiodistal diameter.

[0084] In S103, according to the grouping and typing rules for tooth neck morphology, anatomical healing abutment morphology model sets are designed and manufactured.

[0085] According to some embodiments, anatomical healing abutment morphology model sets can be established according to the set grouping and typing rules for tooth neck morphology. Based on the tooth neck morphology database, artificial intelligence algorithms such as convolutional neural networks (CNN) are used to extract and cluster analyze the tooth neck morphology characteristics of the data units in the database, thereby inducing a clinically representative tooth neck morphology classification system. Specifically, within each group, further subdivide into several models according to the difference in tooth neck size, and each model corresponds to a specific anatomical healing abutment morphology model. Through the grouping and typing rules, anatomical healing abutment morphology model sets covering various clinical scenarios are constructed, and each model in the model set corresponds to a three-dimensional morphology model with clear geometric parameters.

[0086] According to some embodiments, the data of the three-dimensional morphology model includes three-dimensional data of the neck of the natural gum margin to 1.5 millimeters below the gum. The key area corresponding to the implant tooth transgingival contour is the core area affecting the gum support and aesthetic effect; the secondary key area is the area between the gum margin 1.5 millimeters below the implant tooth transgingival contour and the implant platform, which mainly functions to form a soft tissue seal and protect the stability of the implant and alveolar bone junction interface. The anatomical healing abutment finished kit is used for implant restoration in the edentulous area of the posterior tooth site. Through data modeling of the tooth transgingival area, accurate design basis can be provided for the construction of subsequent anatomical healing abutment morphology models, thereby realizing the healing of the second stage postoperative gum tissue according to the ideal transgingival contour.

[0087] An embodiment 1 is described below.

[0088] Assuming that a tooth neck morphology database is established for the posterior tooth area only, the database includes data units of 16 posterior tooth area tooth positions, and each data unit includes morphology data of a tooth through gingiva 1.5 mm in height range. The data units in the database are classified by convolutional neural network to extract tooth neck morphology features, and the 16 posterior tooth area tooth positions are divided into 4 groups, and the grouping rules established are shown in Table 1:

[0089] Table 1 Grouping rules

[0090] Group number Tooth positions included in the group Group 1 Upper left 7, upper left 6, upper right 7, upper right 6 Group 2 Lower left 7, lower left 6, lower right 7, lower right 6 Group 3 Upper left 5, upper left 4, upper right 5, upper right 4 Group 4 Lower left 5, lower left 4, lower right 5, lower right 4

[0091] For the 4 tooth position groups included in Example 1, the typing rules established are shown in Table 2:

[0092] Table 2 Typing rules

[0093]

[0094] According to the grouping and typing rules for tooth neck morphology described above, an anatomical healing abutment morphology model set is determined. The anatomical healing abutment morphology model set includes a plurality of model groups, each model group corresponding to at least one tooth position and including at least one model number of anatomical finished healing abutment morphology models, and each model number of anatomical finished healing abutment morphology models corresponds to one data unit. According to the above examples, the anatomical healing abutment morphology model set includes 4 groups totaling 10 model numbers, and each model number corresponds to one anatomical healing abutment morphology model.

[0095] The method of the present application significantly improves the fitting rate of healing abutment products, so that the soft tissue of the gingiva after the second stage surgery heals according to the ideal gingiva penetration profile.

[0096] In S105, based on the anatomical healing abutment morphology model set, a healing abutment finished product kit containing multiple model numbers is prefabricated.

[0097] According to some embodiments, the anatomical healing abutment finished products in the anatomical healing abutment finished product kit have a grouping number and a model number corresponding to the grouping and typing rules, the anatomical healing abutment finished products with the same grouping number have the same gingiva penetration key area cross-sectional profile characteristics, the anatomical healing abutment finished products with the same model number have the same gingiva penetration key area cross-sectional size characteristics, and the anatomical healing abutment finished products also have a sub-model number representing the gingiva penetration height.

[0098] According to some embodiments, the anatomical healing abutment morphology model set includes a plurality of model numbers, each model number corresponding to a specific tooth position group and a three-dimensional morphology model of neck morphology. Based on these standard morphology models, a series of standardized anatomical healing abutment finished products with clinical adaptability are manufactured using digital modeling and precision machining technology (seeFigure 8 In some embodiments, each model of the anatomical healing abutment product includes a plurality of sub-models with different gingival penetration heights (see, e.g., FIG. 4.2). The gingival penetration height corresponds to the height of the implant platform to the gum line, including the key and sub-key gingival regions. For example, the same model can have three sub-models corresponding to three gingival penetration heights, typically 2 mm, 4 mm, 6 mm, or 3 mm, 5 mm, 7 mm, or 1.5 mm, 3.5 mm, 5.5 mm.

[0099] Referring to Figure 5 FIG. 4 shows a set of anatomical healing abutment product of different models, which are obtained according to the method of any one of the above. Referring to the 3 models included in the 4th group of anatomical healing abutment shape models in Example 1 above, L1 is related to the mesiodistal distance of the corresponding tooth site (see the measurement position shown in Figure 6 , Figure 7 FIG. 4.2). The larger the mesiodistal distance of the corresponding tooth site, the larger L1 is. Typically, L1 can be set to be slightly smaller than the mesiodistal distance of the corresponding tooth site, so that the healing abutment product corresponding to the healing abutment shape model maintains a certain distance from the adjacent teeth on both sides after being installed at the implant tooth site of the patient, for example, maintaining a distance of 1 mm.

[0100] L2 is related to the buccolingual distance of the corresponding tooth site. The larger the buccolingual distance of the corresponding tooth site, the larger L2 is. Typically, L2 can be set to be close to the buccolingual distance of the corresponding tooth site. H1 is the height of the key gingival region of the gingival contour of the corresponding tooth site. For example, H1 can be set to 1.5 mm. The key gingival region is used to support the crown gingival contour. The profile features of the key gingival region in plan view need to conform to the basic features such as the width-length ratio and the circular curvature of the buccolingual distance / mesiodistal distance of the corresponding tooth site. Example: for shape model 4.2, H1 can be 1.5 mm. H2-H1 is the height of the sub-key region of the healing abutment of the corresponding tooth site. H2 is related to the gingival penetration height of the healing abutment of the corresponding tooth site. The larger the gingival penetration height of the corresponding tooth site, the larger H2 is. Typically, H2 can be set to be 1 mm higher than the gingival penetration height. The sub-key region needs to be narrowed to make the gum in this area as thick as possible to form a soft tissue seal and protect the stability of the implant neck bone integration. For shape model 4.2, H2 can be 4 mm.

[0101] Figure 9 FIG. 4 shows a set of anatomical healing abutment product of different models, which are obtained according to the method of any one of the above. Referring to the 3 models included in the 4th group of anatomical healing abutment shape models in Example 1 above, L1 is related to the mesiodistal distance of the corresponding tooth site (see the measurement position shown in

[0102] In S201, tooth site information of the implant tooth site is obtained, the tooth site information including tooth site number, mesiodistal distance, and height from the plane of the implant to the gum line.

[0103] According to some embodiments, the tooth position information includes tooth position number, mesiodistal distance, and height from the implant plane to the gingival margin.

[0104] In S203, the tooth position information is compared with the anatomical healing abutment morphology model set to obtain the comparison results.

[0105] According to some embodiments, firstly, the tooth position information of the patient's implant site (such as upper left 6, lower right 5, etc.) is compared with the corresponding model group in a preset set of anatomical healing abutment morphology models to determine the corresponding group. Further, the mesiodistal distance of the implant site can be compared with the mesiodistal diameter of the corresponding model in the preset set of anatomical healing abutment morphology models to determine the classification.

[0106] As mentioned above, the model grouping can be established based on clinical statistics and AI clustering analysis results in the tooth neck morphology database. For example, teeth with similar transgingival structural features are usually grouped together, such as the anterior teeth group, the left upper posterior teeth group, and the right lower posterior teeth group.

[0107] According to other embodiments, three-dimensional morphological data of the patient's implant site at the gingival level are acquired (e.g., through intraoral scanning or CBCT reconstruction), and preprocessed, including data cleaning, noise reduction, coordinate system unification, and size standardization, to ensure the accuracy and consistency of subsequent feature extraction and comparison processes. Image recognition and 3D modeling techniques are used to extract key geometric features from the standardized cervical morphological data to match the core feature vectors of the analysis, specifically including mesiodistal distance, buccolingual diameter, and gingival height. Then, similarity calculations and comparisons are performed based on the extracted features. After determining the model group to which the patient belongs, the system calculates the similarity between the extracted individual patient's tooth cervical morphological features and the anatomical healing abutment morphological models of all models within that group.

[0108] In S205, based on the comparison results, the corresponding target healing abutment is selected from the anatomical healing abutment kit.

[0109] According to some embodiments, the anatomical healing abutment morphology model set corresponds to the anatomical healing abutment finished kit as described above. The anatomical healing abutment finished kit is grouped according to the cross-sectional contour characteristics of the transgingival critical area. Each group corresponds to at least one tooth position. Within each group, it is classified according to the cross-sectional size characteristics of the transgingival critical area. Each model of anatomical healing abutment finished kit includes multiple sub-models with different transgingival heights. The transgingival height includes the height of the transgingival critical area and the secondary critical area.

[0110] According to some embodiments, as mentioned above, the set of anatomical healing abutment form models corresponds to the set of anatomical healing abutment finished product kits as described above, the anatomical healing abutment finished product models in the set of anatomical healing abutment form models are grouped by cross-sectional profile characteristics of the transgingival key area, each group includes healing abutment finished product models of at least one tooth site, the healing abutment finished product models within each group are subtyped by cross-sectional size characteristics of the transgingival key area, each subtype of the abutment finished product model includes multiple submodels of different transgingival heights, the transgingival heights include the heights of the transgingival key area and the sub-key area. The group of the target healing abutment finished product can be determined according to the tooth site number, the subtype of the target healing abutment finished product can be determined according to the mesial-distal distance of the implant tooth site, and the submodel of the target healing abutment finished product can be determined according to the height from the plane of the implant to the gum margin of the implant tooth site. For example: the tooth site corresponding to the patient's implant tooth site is left lower 5, then according to Table 1, the type of the anatomical healing abutment form model required by the patient's implant tooth site belongs to the 4th group of tooth site groups. The mesial-distal distance can be obtained from the preoperative CT, or can be obtained in the second stage surgery. The height from the plane of the implant to the gum margin can be measured in the second stage surgery.

[0111] According to another embodiment, the target healing abutment product is determined according to the tooth site number; the model of the target healing abutment product is determined according to the mesiodistal diameter of the implant tooth site; the sub-model of the target healing abutment product is determined according to the height from the plane of the implant to the gum margin of the implant tooth site, thereby determining the sub-model. Thus, the corresponding target healing abutment product can be selected from the set of anatomical healing abutment products. Specifically, the comparison result includes the matching score between the actual tooth neck morphology of the patient and each model of each model in the model group, the geometric similarity index, and the consistency evaluation of the key area of the gingival penetration, etc. According to the set matching threshold or sorting rule, the system identifies an optimal matching model from the candidate models, and the three-dimensional morphology of the optimal matching model is closest to the actual gingival penetration structure of the implant tooth site of the patient. The determined optimal matching model is used to select the corresponding product from the set of anatomical healing abutment products that have been completed. For example, after obtaining the three-dimensional data of the tooth neck morphology corresponding to the implant tooth site of the patient, the three-dimensional data of the actual tooth gingival appearance morphology is matched with the data unit corresponding to each model in the set of anatomical healing abutment morphology models, and the morphology model with the highest matching degree is determined. The model corresponding to the morphology model with the highest matching degree is determined as the model of the anatomical healing abutment morphology model required by the implant tooth site of the patient. For example, the data format of the three-dimensional data of the tooth neck morphology is standardized, so that the data format of the three-dimensional data of the tooth neck morphology is consistent with the data format of the morphology model. The coordinate system and unit (such as millimeter) are unified to avoid matching errors caused by coordinate system offset or scaling. The three-dimensional data of the tooth neck morphology is denoised and repaired to remove flying point or hole scanning noise and scanning blind area. Feature alignment, for example, coarse alignment based on key anatomical landmarks or principal component analysis (PCA); fine alignment can also be performed, and the position and angle are further optimized by iterative closest point algorithm (ICP) to minimize the geometric difference between the two. Then, feature extraction is performed. Geometric feature extraction can be used, such as extracting global features, such as calculating volume, surface area, centroid position, principal axis direction, etc. Local features can also be extracted, such as extracting curvature, normal direction, edge contour (such as gum line, cusp ridge), etc. Through similarity calculation, the morphology model with the highest matching degree is determined from the morphology models corresponding to each model included in the tooth site group. For example, for the three-dimensional data of the tooth neck morphology corresponding to the left lower 5 tooth site of the patient, the volume overlap rate (Dice coefficient) similarity algorithm is used to quantitatively calculate the volume overlap rate between the morphology model corresponding to each model of the 4.1-4.2 model in Table 2, Group 4 and the three-dimensional data of the tooth neck morphology, and the morphology model with the largest volume overlap rate is determined as the morphology model with the highest matching degree.Assuming that the volume overlap rate between the morphological model corresponding to the 4.2 type and the three-dimensional data of the tooth neck morphology is the largest, the type determining subsystem determines the 4.2 type of the fourth group in the set of anatomical healing abutment morphological models as the type of the anatomical healing abutment morphological model required by the dental implant site of the patient, that is, the morphological model 4.2, so that the product corresponding to the type can be selected from the set of anatomical healing abutment products, and an anatomical healing abutment close to the actual tooth neck morphology of the dental implant site can be provided for the patient.

[0112] The product kit according to the present application is designed and mass-produced based on the set of anatomical healing abutment morphological models established as described above, ensuring that each type has good clinical representativeness and adaptability. Such a method realizes a complete closed loop from individualized data acquisition to product selection, significantly improving the efficiency and quality of postoperative gingival soft tissue induced healing, while taking into account the needs of industrial production and personalized treatment.

[0113] In the design scheme of the present application, the matching can be performed by model matching, without the requirement of clinical experience, and is widely applicable to most actual clinical scenarios, realizing natural healing and good aesthetic effect of postoperative gingival tissue.

[0114] According to some embodiments, the determination of the adaptive type of the anatomical healing abutment according to the tooth neck morphology data of the patient's dental implant site can be implemented in various ways. For example, the dentist obtains the tooth site information of the patient's dental implant site for positioning the tooth site group to which the anatomical healing abutment to be matched belongs. Then, through clinical examination or three-dimensional image auxiliary means, the gingival region of the patient's dental implant site is observed, and key morphological parameters are obtained, including mesiodistal distance, buccolingual diameter, etc., and the above-mentioned tooth site and morphological information are compared and analyzed with each type of the anatomical healing abutment morphological model set corresponding to the tooth site, to evaluate the matching degree in terms of contour curvature, size ratio, etc. Based on experience and visual comparison, a anatomical healing abutment type closest to the actual tooth neck morphology of the patient can be finally selected.

[0115] According to some embodiments, the tooth site information not only identifies the specific location of the target implant region, but also includes a plurality of key anatomical parameters closely related to the neck morphology, as shown in Figure 5 、 6 、7. Among them, the mesiodistal distance is the width of the target tooth site in the dental arch direction, reflecting the space distance between adjacent teeth; the buccolingual diameter represents the transverse size from the buccal side to the lingual side of the crown, affecting the symmetry and support effect of the healing abutment shape; the vertical distance from the gum margin to the implant platform determines the soft tissue sealing performance. By including these parameters in the tooth site information system, the present application realizes more accurate type identification and individualized matching, improving the quality and aesthetic effect of postoperative gingival healing.

[0116] According to some embodiments, the design scheme of the present application can provide a better anatomical healing abutment product for the dental implant patient. By constructing a tooth neck morphology database, determining an anatomical healing abutment morphology model set, and then producing an anatomical healing abutment product kit according to the anatomical healing abutment morphology model set, the type of the anatomical healing abutment morphology model required for the dental implant site of the patient is determined, and the patient is provided with an anatomical healing abutment close to the real tooth neck morphology of the dental implant site.

[0117] According to some embodiments, the design scheme of the present application can provide a better anatomical healing abutment product for the dental implant patient. By constructing a tooth neck morphology database, determining an anatomical healing abutment morphology model set, and then producing an anatomical healing abutment product kit according to the anatomical healing abutment morphology model set, the type of the anatomical healing abutment morphology model required for the dental implant site of the patient is determined, and the patient is provided with an anatomical healing abutment close to the real tooth neck morphology of the dental implant site.

[0118] According to some embodiments, the design scheme of the present application can provide a better anatomical healing abutment product for the dental implant patient. By constructing a tooth neck morphology database, determining an anatomical healing abutment morphology model set, and then producing an anatomical healing abutment product kit according to the anatomical healing abutment morphology model set, the type of the anatomical healing abutment morphology model required for the dental implant site of the patient is determined, and the patient is provided with an anatomical healing abutment close to the real tooth neck morphology of the dental implant site.

[0119] According to some embodiments, the design scheme of the present application can provide a better anatomical healing abutment product for the dental implant patient. By constructing a tooth neck morphology database, determining an anatomical healing abutment morphology model set, and then producing an anatomical healing abutment product kit according to the anatomical healing abutment morphology model set, the type of the anatomical healing abutment morphology model required for the dental implant site of the patient is determined, and the patient is provided with an anatomical healing abutment close to the real tooth neck morphology of the dental implant site.

[0120] According to some embodiments, the design scheme of the present application can provide a better anatomical healing abutment product for the dental implant patient. By constructing a tooth neck morphology database, determining an anatomical healing abutment morphology model set, and then producing an anatomical healing abutment product kit according to the anatomical healing abutment morphology model set, the type of the anatomical healing abutment morphology model required for the dental implant site of the patient is determined, and the patient is provided with an anatomical healing abutment close to the real tooth neck morphology of the dental implant site.

[0121] Figure 10 A block diagram of a computing device according to an example embodiment of the present application is shown.

[0122] As shown in Figure 10 The computing device 30 includes a processor 12 and a memory 14. The computing device 30 can also include a bus 22, a network interface 16, and an I / O interface 18. The processor 12, the memory 14, the network interface 16, and the I / O interface 18 can communicate with each other via the bus 22.

[0123] The processor 12 can include at least one general-purpose CPU (Central Processing Unit), microprocessor, or application-specific integrated circuit, etc., for executing relevant program instructions. According to some embodiments, the computing device 30 can also include a high-performance display adapter (GPU) 20 for accelerating the processor 12.

[0124] The memory 14 can include a machine system readable medium in the form of volatile memory, such as a random access memory (RAM), read-only memory (ROM), and / or cache memory. The memory 14 is used to store at least one program containing instructions and data. The processor 12 can read the instructions stored in the memory 14 to execute the above-mentioned method according to the embodiments of the present application.

[0125] The computing device 30 can also communicate with one or more networks through the network interface 16. The network interface 16 can be a wireless network interface.

[0126] The bus 22 can include an address bus, a data bus, a control bus, etc. The bus 22 provides a path for exchanging information between the components.

[0127] It should be noted that, in the specific implementation process, the computing device 30 can also include other components necessary for normal operation. In addition, those skilled in the art can understand that the above-mentioned device can also only contain the components necessary to implement the embodiments of the present application, and does not necessarily contain all the components shown in the figure.

[0128] The present application also provides a computer readable storage medium having a computer program stored thereon, which is executed by a processor to implement the steps of the above-mentioned method. The computer readable storage medium can include but is not limited to any type of disk, including floppy disks, optical disks, DVDs, CD-ROMs, micro-drives, and magneto-optical disks, ROMs, RAMs, EPROMs, EEPROMs, DRAMs, VRAMs, flash memory devices, magnetic or optical cards, nanosystems (including molecular memory ICs), network storage devices, cloud storage devices, or any type of medium or device suitable for storing instructions and / or data.

[0129] The embodiments of the present application also provide a computer program product, which includes a non-transitory computer readable storage medium storing a computer program, the computer program being operable to cause a computer to execute some or all of the steps of any one of the methods as described in the above-mentioned method embodiments.

[0130] Those skilled in the art can clearly understand that the technical solutions of the present application can be implemented by means of software and / or hardware. The "unit" and "module" in the specification refer to software and / or hardware that can independently complete or cooperate with other components to complete a specific function, and the hardware can be, for example, a field programmable gate array, an integrated circuit, etc.

[0131] It should be noted that, for the foregoing method embodiments, in order to simply describe, they are all expressed as a combination of a series of actions, but those skilled in the art should know that the present application is not limited by the order of the described actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should know that the embodiments described in the specification all belong to preferred embodiments, and the actions and modules involved are not necessarily necessary for the present application.

[0132] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0133] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented by other means. For example, the device embodiments described above are only illustrative, and the division of units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed units can be indirect coupling or communication connection through some service interface, device or unit, which can be electrical or other forms.

[0134] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or they can be distributed on a plurality of network units. Part or all of the units can be selected to achieve the purpose of the embodiment scheme according to actual needs.

[0135] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0136] The integrated unit, if implemented in the form of a software function unit and sold or used as an independent product, can be stored in a computer readable memory. Based on such understanding, the technical solutions of the present application essentially or say the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a memory and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server or a network device, etc.) to execute all or part of the steps of the various embodiment methods of the present application.

[0137] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0138] The exemplary embodiments of the present application are specifically shown and described above. It should be understood that the present application is not limited to the detailed structure, arrangement or implementation method described herein; on the contrary, the present application is intended to cover various modifications and equivalent arrangements included in the spirit and scope of the appended clauses.

Claims

1. A method of making an anatomically shaped healing abutment finished kit, comprising: The method comprises the following steps: Based on the tooth neck shape database, a grouping and typing rule for tooth neck shape is generated, which divides teeth into different groups and types, wherein the grouping and typing rule for tooth neck shape comprises tooth neck shape grouping rule and typing rule within the group, wherein the tooth neck shape grouping rule comprises grouping of different tooth positions according to tooth neck contour features of the different tooth positions, each group comprising at least one tooth position, and the typing rule comprises typing of the at least one tooth position within the group according to tooth neck size features; According to the grouping and typing rule for tooth neck shape, an anatomic healing abutment shape model set is designed and manufactured; Based on the anatomic healing abutment shape model set, an anatomic healing abutment finished product kit containing multiple types is prefabricated, Wherein the anatomic healing abutment finished products in the anatomic healing abutment finished product kit have corresponding group numbers and types according to the grouping and typing rule, the anatomic healing abutment finished products with the same group number have the same key area cross-sectional profile feature, the anatomic healing abutment finished products with the same type have the same key area cross-sectional size feature, and the anatomic healing abutment finished products also have a sub-type number representing the height of the key area.

2. The method of claim 1, wherein, The method further comprises the following steps of pre-establishing the tooth neck shape database: Collecting tooth neck shape data through oral scanning images or cone beam computed tomography images; Based on the collected tooth neck shape data, the tooth neck shape database is established.

3. The method of claim 2, wherein, The tooth neck shape database comprises data units of multiple different tooth positions, each data unit corresponding to a tooth position and having tooth position annotation information.

4. The method of claim 3, wherein, Based on the tooth neck shape database, a grouping and typing rule for tooth neck shape is generated, comprising: Based on the tooth neck shape database, tooth neck shape features are extracted from the data units in the tooth neck shape database to generate the grouping and typing rule for tooth neck shape.

5. The method of claim 4, wherein, The tooth neck shape features comprise the tooth neck contour features and the tooth neck size features, wherein: The tooth neck contour features comprise the ratio of mesiodistal diameter to buccolingual diameter, and the key area cross-sectional profile feature corresponds to the tooth neck contour feature; The tooth neck size features comprise the mesiodistal diameter, and the key area cross-sectional size feature corresponds to the tooth neck size feature.

6. The method of claim 5, wherein, The tooth neck contour features further comprise tooth neck cross-sectional area, tooth neck cross-sectional circumference, mesiodistal diameter, and buccolingual diameter.

7. The method of claim 1, wherein, The height of the key area includes the height of the key area and the secondary key area.

8. The method of claim 1, wherein, The anatomic healing abutment finished product kit is used for implant restoration of posterior tooth position edentulous area.

9. An anatomical healing abutment finished kit, characterized in that, The anatomic healing abutment finished product kit The method according to any one of claims 1-8.

10. A method of selecting an anatomic healing abutment finished product, characterized by, The method comprises the following steps: Obtaining tooth position information of the implant tooth position, the tooth position information comprising tooth position number, mesiodistal distance, and height from the plane of the implant to the gum margin; Comparing the tooth position information with the anatomic healing abutment shape model set to obtain a comparison result; According to the comparison result, a corresponding target healing abutment product is selected from the anatomical healing abutment product set, wherein The anatomical healing abutment shape model set corresponds to the anatomical healing abutment product set according to claim 9, The anatomical healing abutment product set is grouped according to the transgingival key area cross-sectional profile characteristics, each group corresponds to at least one tooth site, and each group is subtyped according to the transgingival key area cross-sectional size characteristics, each type of anatomical healing abutment product includes multiple subtypes with different transgingival heights, and the transgingival height includes the height of the transgingival key area and the sub-key area.

11. The method of claim 10, wherein, Selecting a corresponding target healing abutment product from the anatomical healing abutment product set comprises: According to the tooth site number, determine the group where the target healing abutment product is located; According to the mesiodistal distance of the implant tooth site, determine the type of the target healing abutment product; According to the height from the plane of the implant to the gum margin of the implant tooth site, determine the transgingival height of the target healing abutment product, and thus determine the sub-type.

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