A new method for making an immediate denture

Abstract

This disclosure presents a novel method for fabricating immediate implant-supported dentures. The method includes: acquiring first oral data, which includes three-dimensional data of a edentulous jaw model and three-dimensional data of a denture model, the denture model being located at a planned position relative to the edentulous jaw model; acquiring second oral data, which includes scanned data of multiple abutments installed within the oral cavity; determining the positional relationship between the multiple abutments and the denture model based on the first and second oral data; forming multiple holes in a prefabricated denture corresponding to the denture model based on the positional relationship, each hole accommodating one of the multiple abutments; and fixing the multiple abutments to the prefabricated denture. This denture fabrication method employs digital scanning technology to precisely drill holes in the prefabricated denture, ensuring a tight connection with the abutments. This process simplifies the fabrication process and enables the efficient production of highly customized, high-precision dentures.

Description

Technical Field

[0001] Embodiments of this disclosure relate to dental implant technology, specifically to a method and apparatus for fabricating dentures based on digital scanning. Background Technology

[0002] With the aging of society, the number of patients with missing teeth is constantly increasing, leading to a growing demand for efficient and stable restorative methods. As a result, dental implant technology has gradually gained clinical application. This technology provides chewing efficiency and stability close to natural teeth by implanting a dental implant, effectively protecting the alveolar bone and improving patients' quality of life. However, dental implants typically require a long treatment period, and patients must wait until the prosthesis is fully prepared before regaining normal chewing function. Prefabricated denture technology allows patients to wear prefabricated dentures (also known as "ready-to-wear dentures") on the same day the implant is placed, restoring chewing function and avoiding the inconvenience of the transition period for edentulous or missing teeth in traditional methods.

[0003] Nevertheless, traditional prefabricated dentures often lack sufficient customization and have poor fitting accuracy with implants. This can easily lead to gaps or uneven stress distribution between the denture and implant, affecting the stability and comfort of the denture, reducing chewing efficiency, and potentially increasing the risk of implant failure. Therefore, improving the fitting accuracy and personalization of prefabricated dentures to ensure patients' chewing ability and comfort presents a challenge for relevant technicians. Summary of the Invention

[0004] According to a first aspect of this disclosure, a method for fabricating a denture based on digital scanning is provided, comprising: acquiring first oral cavity data, the first oral cavity data including three-dimensional data of a edentulous jaw model and three-dimensional data of a denture model, the denture model being located at a planned position relative to the edentulous jaw model; acquiring second oral cavity data, the second oral cavity data including scan data of a plurality of abutments installed in the oral cavity; determining a positional relationship between the plurality of abutments and the denture model based on the first oral cavity data and the second oral cavity data; forming a plurality of holes in a prefabricated denture corresponding to the denture model based on the positional relationship, each hole being used to accommodate one of the plurality of abutments; and fixing the plurality of abutments to the prefabricated denture.

[0005] According to a second aspect of this disclosure, a denture fabrication apparatus is provided, comprising: a computing device including a processor and a memory, the memory storing instructions that, when executed by the processor, cause the computing device to: acquire first oral cavity data, the first oral cavity data including three-dimensional data of a edentulous jaw model and three-dimensional data of a denture model, the denture model being located at a planned position relative to the edentulous jaw model; acquire second oral cavity data, the second oral cavity data including scan data of a plurality of abutments mounted in the oral cavity; and determine a positional relationship between the plurality of abutments and the denture model based on the first oral cavity data and the second oral cavity data. The denture fabrication apparatus according to the second aspect further includes a drilling device for forming a plurality of holes in a prefabricated denture corresponding to the denture model based on the positional relationship, each hole for receiving one of the plurality of abutments. The denture fabrication apparatus according to the second aspect further includes a connecting device for fixing the plurality of abutments to the prefabricated denture.

[0006] The summary section is provided to present the chosen concepts in a simplified form, which will be further described in the detailed description below. The summary section is not intended to identify key or principal features of the claimed subject matter, nor is it intended to limit the scope of the claimed subject matter. Attached Figure Description

[0007] Figure 1 The denture fabrication process according to some embodiments of the present disclosure is illustrated.

[0008] Figure 2 A flowchart of a digital scanning-based denture fabrication method according to some embodiments of the present disclosure is shown.

[0009] Figure 3 A schematic diagram of aligned oral scan data and planned denture models according to some embodiments of the present disclosure is shown.

[0010] Figure 4 A schematic diagram is shown of a prefabricated denture forming a hole for receiving an abutment, according to some embodiments of the present disclosure.

[0011] Figure 5 A schematic diagram is shown illustrating the rigid connection of the abutment and the prefabricated denture by injection adhesive according to some embodiments of the present disclosure.

[0012] In these accompanying figures, the same or similar reference symbols are used to indicate the same or similar elements. The figures are for illustrative purposes only, and the sizes of the elements are not necessarily drawn to scale. Detailed Implementation

[0013] This disclosure will now be discussed with reference to several example implementations. It should be understood that these implementations are discussed only to enable those skilled in the art to better understand and thus implement this disclosure, and not to imply any limitation on the scope of this disclosure.

[0014] As used herein, the term "comprising" and its variations are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "at least partially based on". The terms "an implementation" and "an implementation" are to be interpreted as "at least one implementation". The term "another implementation" is to be interpreted as "at least one other implementation". The terms "first", "second", etc., may refer to different or the same objects. Other explicit and implicit definitions may also be included below.

[0015] Dental implants are a restorative technique that artificially restores the function and aesthetics of missing teeth. The core of the procedure involves the use of three structural components: the implant, the abutment, and the crown, to replace the tooth. The implant, typically made of titanium or titanium alloy, is inserted into the patient's alveolar bone, acting as an artificial tooth root. After implantation, the implant and alveolar bone achieve stable integration through osseointegration, providing reliable support for the superstructure. This integration process usually takes several months. Once the implant has firmly integrated with the alveolar bone, the abutment is installed. The abutment is the transitional structure connecting the implant and the crown; one end connects to the implant, and the other end provides a platform for fixing the crown. The denture is the crown portion that ultimately appears in the oral cavity and directly performs the chewing function.

[0016] Using prefabricated denture technology, a temporary abutment (also known as a "temporary post") and temporary crown can be installed directly on the day of or within a few days of implant placement. After the implant and alveolar bone have integrated, they are replaced with the permanent abutment and denture. Patients do not need to experience an edentulous period, and the comfort and aesthetics are excellent.

[0017] In related technologies, the fabrication of prefabricated dentures mainly includes traditional and digital processes. The traditional process relies on impression taking after implantation, model fabrication, temporary abutment adjustment, wax pattern making, and on-site processing. While it can achieve personalized restorations, the process is cumbersome, requires chairside technician assistance, is time-consuming, highly dependent on technician operation, and results in a poor patient experience. The digital process achieves denture fabrication through optical impression taking, digital design and processing, and model printing, reducing some manual operations. However, it is still limited by scanning accuracy and factory processing cycles, resulting in a longer overall time consumption. Post-operative patient cooperation is low, and occlusal deviations are prone to occur, requiring additional intraoral adjustments. Both methods suffer from high precision requirements, complex processes, and high time costs, making it difficult to balance speed, accuracy, and patient comfort.

[0018] In view of the problems of existing denture fabrication technology, such as complicated process, high time cost, limited materials and technology, and poor patient adaptability, the embodiments of this disclosure propose a denture fabrication method and denture fabrication device that can improve the customization and precision of denture fabrication, simplify the process and improve the patient experience.

[0019] The following is for reference Figures 1 to 5 Exemplary embodiments of this disclosure are described below. The following primarily describes the denture fabrication process for edentulous patients (i.e., those who have no teeth at all). It is understood that the denture fabrication method and apparatus provided in this disclosure are also applicable to some edentulous patients (i.e., those who have some teeth in their mouths but also have edentulous areas).

[0020] Figure 1 A denture fabrication process 100 according to some embodiments of the present disclosure is illustrated. This process ensures precise matching of the denture to the implant through digital design and intraoral scanning. As shown, the denture fabrication process 100 includes three stages: oral data registration 110, pre-fabricated denture opening 120, and denture and abutment connection 130.

[0021] In oral data registration 110, oral data registration is performed based on first oral data 102 and second oral data 104. In some implementations, the first oral data 102 can be obtained through digital denture design, and the second oral data can be obtained through intraoral scanning. The first oral data 102 corresponds to the planning data before implantation. The second oral data corresponds to the intraoral scan data after implantation. In some embodiments, the second oral data can be scan data obtained through real-time intraoral scanning, or scan data that has been scanned in advance and stored on a storage medium. When denture fabrication is required, the first and second oral data can be retrieved from the storage medium or obtained remotely via a network. The denture fabrication method provided in this disclosure can be implemented independently of the process of implanting implants and abutments in the oral cavity.

[0022] The first oral data 102 includes three-dimensional data of the edentulous jaw model and three-dimensional data of the denture model. The edentulous jaw model can be an edentulous jaw model or a partially edentulous jaw model. The three-dimensional data of the edentulous jaw model can be oral three-dimensional data obtained through intraoral scanning, or three-dimensional data obtained by scanning the impression after taking an intraoral impression. The three-dimensional data of the denture model can be standard model data of the prefabricated denture (without holes) to be used, or three-dimensional data obtained by scanning a solid prefabricated denture. In some embodiments, the technician can set the relative positional relationship between the edentulous jaw model and the denture model on a computer interface, so that the denture model is located at the planned position relative to the edentulous jaw model.

[0023] The second oral data 104 includes scan data of multiple abutments installed within the oral cavity, wherein one end of each abutment is detachably fixed to an implant. In this case, each abutment has defined spatial information within the oral cavity, including coordinates and angles. To connect the prefabricated denture and the abutment, multiple holes need to be formed in the prefabricated denture, each hole accommodating one abutment, and the positions and angles of the holes precisely match the positions and angles of the abutments. Through registration between the first oral data 102 and the second oral data 104, the first oral data 102 and the second oral data 104 can be transformed to the same coordinate system, thereby determining the relative positional relationship between the abutments in the second oral data 104 and the denture model in the first oral data 102. In some embodiments, oral data registration can be performed based on the same markers in the first oral data 102 and the second oral data 104. For the second oral data 104, the markers are rigid or near-rigid objects that have been installed or are already present in the oral cavity, allowing their three-dimensional data to be acquired through intraoral scanning. For example, feature points of the palatal folds of the maxilla can be used as markers. In some embodiments, retention screws used to fix the implant guide can also be used as markers, as can other additionally installed bone screws (e.g., orthodontic anchorage screws). For the first oral data 102, the same markers can be added in advance or superimposed on the edentulous jaw model, for example, by adding the three-dimensional data of the markers to specific locations in the first oral data according to the planning and design scheme.

[0024] Through oral data registration 110, the positional relationship between the abutment and the denture model can be obtained. This positional relationship can be represented by the coordinate and angle information of the through-holes formed by each abutment on the denture model. Further, in the prefabricated denture drilling stage 120, based on the positional relationship between the abutment and the denture model, holes are drilled on the prefabricated denture corresponding to the denture model. In some embodiments, a drilling device with drilling and cutting capabilities (e.g., a chairside robot or chairside cutting device) is used to drill holes on the prefabricated denture. The drilling device may have a robotic arm, a worktable, an image acquisition module, and a control unit. The image acquisition module is used to acquire images of the prefabricated denture on the worktable. The control unit is used to align the coordinate system of the drilling device with the coordinate system of the denture model based on the acquired images, and control the robotic arm to drill holes on the prefabricated denture according to the coordinate and angle information of the through-holes.

[0025] Next, in the denture and abutment connection stage 130, the abutment is placed into the corresponding hole of the prefabricated denture, and the denture and abutment are fixedly connected by filling with adhesive (e.g., resin). To facilitate adhesive filling, in addition to the through hole corresponding to the abutment, the drilling device can also form a hole in the prefabricated denture for injecting adhesive, wherein the injection hole communicates with the corresponding through hole, and the adhesive fills the gap between the abutment and the hole of the prefabricated denture through the injection hole. In some embodiments, the abutment can be placed into the corresponding hole of the prefabricated denture by a connection device (e.g., including a robotic arm and an injection device), and then adhesive is filled through the injection hole, so that the denture and abutment are rigidly connected. In some embodiments, the adhesive can be injected into the hole of the denture while the prefabricated denture is in a passive connection state. In some embodiments, the adhesive can be injected into the hole of the denture while in occlusion. Optionally, the rigid connection of the denture and abutment can be completed manually.

[0026] Figure 2 A flowchart of a digital scanning-based denture fabrication method 200 according to some embodiments of the present disclosure is shown. For ease of understanding, reference will be made to... Figures 3 to 5 The digital interface shown describes method 300.

[0027] In box 210, first oral cavity data is obtained, which includes three-dimensional data of the edentulous jaw model and three-dimensional data of the denture model, with the denture model located at a planned position relative to the edentulous jaw model. Figure 3 (a) An exemplary edentulous jaw model (maxilla) is shown. In some embodiments, the edentulous jaw model of a patient can be obtained by intraoral scanning. Figure 3 (b) An exemplary denture model is shown, wherein the denture model is located at the planned position of the edentulous jaw model, and both are in the same coordinate system. In some embodiments, a technician can move the denture model in a digital interactive interface to place it at the desired planned position.

[0028] To facilitate precise alignment of the prosthesis model and abutment data, the first oral cavity data may also include three-dimensional data of markers positioned relative to the prosthesis model. In some embodiments, the position of the markers relative to the edentulous jaw model can be determined, and the three-dimensional data of the markers can be acquired based on that position. For example, the position of the markers can be selected on a digital interactive interface, and then the three-dimensional data of the markers can be added to the corresponding position.

[0029] In some embodiments, the marker may be a retaining pin on the implantation guide (hereinafter referred to as the "guide"). For example... Figure 3 As shown in (c), Figure 3Based on the edentulous jaw model in (a), three-dimensional data of the surgical guide is added through a digital interactive interface. The surgical guide includes retention pin holes and implant holes for implant positioning. In actual operation, retention pins pass through the retention pin holes of the surgical guide, fixing the surgical guide immovably in the oral cavity. The implant passes through the implant holes and is inserted into the oral cavity. After implant placement, the abutment can pass through the implant holes, and one end of the abutment is detachably fixed to the implant.

[0030] like Figure 3 As shown in (c), the position of the implant guide relative to the edentulous jaw model can be determined. Based on this position, the position of the retention pin holes can be determined, the three-dimensional data of the retention pins can be obtained, and added to that position. Figure 3 As shown in (d), the three-dimensional data of the retention pins is added to the first oral cavity data according to the position of the retention pin holes on the guide plate. In the first oral cavity data, the planned position of the three-dimensional data of the retention pins relative to the denture model is fixed and immovable. With the help of the guide plate, the relative positional relationship between the retention pins and the implant holes / abutment holes is fixed and immovable.

[0031] In some embodiments, the first oral cavity data is obtained through a digital oral impression. For example, three-dimensional data of a edentulous jaw model is acquired by intraoral scanning, and markers and three-dimensional data of a denture model are placed at their designated locations. Alternatively, the first oral cavity data can be obtained by scanning a physical oral impression. For example, an intraoral plaster model is made from the impression, a prefabricated denture and markers are placed at their designated locations on the plaster model, and then the first oral cavity data is obtained by scanning.

[0032] In frame 220, second oral data is acquired, including scan data of multiple abutments mounted intraorally. After implant placement, the multiple abutments are detachably connected to the implant, and then an intraoral scan is performed using an intraoral scanner to acquire the second scan data. Abutments made of a material with good reflective properties can be selected to facilitate scanning. The diameter of the abutments should be as small as possible while ensuring strength. In some implementations, the abutments may have anti-dislodgement retention grooves to ensure reliable connection with the implant.

[0033] To facilitate registration with the first oral data, the second oral data may also include three-dimensional data of markers. For example, a marker could be a retainer pin on a surgical guide. After implant placement, the retainer pin is retained, and three-dimensional data of the retainer pin and abutment are acquired using an intraoral scanner, such as... Figure 3 As shown in (e).

[0034] In box 230, the positional relationship between multiple abutments and the denture model is determined based on first and second oral cavity data. In some embodiments, the first and second oral cavity data are converted to the same coordinate system through registration, such as... Figure 3 As shown in (f), based on the first and second oral cavity data in the same coordinate system, the position and angle of each abutment relative to the denture model can be determined.

[0035] Registration can be achieved based on the same markers in the first and second oral cavity data. As an example, retention pins can be used as markers. Figure 3 (d) represents the first oral cavity data, where the positional relationship between the retention pins and the denture model is fixed. Figure 3 (e) represents the second oral cavity data, where the positional relationship between the retainer and the abutment is determined. By transforming the coordinates of the retainer between the first and second oral cavity data, the abutment and the denture model can be transformed to the same coordinate system, thereby enabling the determination of the position and angle of the hole formed by each abutment on the denture model.

[0036] In frame 240, based on positional relationships, multiple holes are formed on the prefabricated denture corresponding to the denture model, each hole accommodating one of multiple abutments. The holes can be created using a cutting drilling device (e.g., a chairside robot or chairside cutting device), or manually according to software-registered guidance. Figure 4 (a) shows multiple through holes formed in the preformed denture. Figure 4 (b) shows the hole through which the abutment passes at an angle to the denture.

[0037] In frame 250, multiple abutments are securely attached to the prefabricated denture. Multiple abutments can be placed into corresponding holes in the prefabricated denture, and then adhesive (e.g., resin material) is injected into each hole to secure the multiple abutments to the prefabricated denture. In some embodiments, the abutments can be removed from the implant, inserted into the holes of the prefabricated denture, and adhesive can be filled between the holes and the abutments.

[0038] In some embodiments, adhesive can be injected into the holes of the prefabricated denture while it is in a passively connected state. For example, a rigid connection between the denture and the abutment is achieved using resin material under proper occlusion. To achieve a rigid connection under occlusion, injection ports corresponding to each hole can be formed on the side of the prefabricated denture. In some embodiments, the injection ports are located below the labial crown of the denture model, for example, at the lower third of the labial crown. Figure 5As shown in (a). This arrangement is more conducive to a tighter connection between the abutment and the prefabricated denture, preventing the abutment from loosening due to false connections within the prefabricated denture. The passive connection during occlusion ensures the accuracy of the prefabricated denture's occlusal position and reduces intraoral adjustment after the denture is worn, such as... Figure 5 As shown in (b).

[0039] This disclosure also provides a denture fabrication apparatus. The apparatus includes a computing device comprising a processor and a memory, wherein the memory stores instructions that, when executed by the processor, cause the computing device to: acquire first oral cavity data, the first oral cavity data including three-dimensional data of a edentulous jaw model and three-dimensional data of a denture model, the denture model being located at a planned position relative to the edentulous jaw model; acquire second oral cavity data, the second oral cavity data including scan data of a plurality of abutments mounted within the oral cavity; and determine, based on the first oral cavity data and the second oral cavity data, the positional relationship between the plurality of abutments and the denture model. The denture fabrication apparatus further includes a drilling device for forming a plurality of holes in a prefabricated denture corresponding to the denture model, based on the positional relationship between the abutments and the denture model, each hole for receiving one of the plurality of abutments. The denture fabrication apparatus further includes a connecting device for securely connecting the plurality of abutments to the prefabricated denture. The denture fabrication apparatus may further include an intraoral scanner for scanning the oral cavity to acquire the second oral cavity data when the plurality of abutments are mounted within the oral cavity.

[0040] The above is for reference only. Figures 1 to 5 The features or contents of the described denture manufacturing method also apply to the denture fabrication apparatus provided in this disclosure, and will not be repeated here.

[0041] The denture fabrication method and apparatus disclosed herein employ digital scanning technology to precisely drill holes in the prefabricated denture, ensuring a tight connection with the abutment. This process simplifies the fabrication process and enables the efficient production of highly customized, high-precision dentures.

[0042] In some implementations, at least some features of the denture manufacturing method and denture fabrication apparatus provided in this disclosure can be implemented by a computing device, a computer program or a computer-readable storage medium, or by a computer program controlling hardware devices, including but not limited to: acquiring first oral cavity data and second oral cavity data, registering the first oral cavity data and the second oral cavity data, generating a positional relationship between the abutment and the denture model, using the positional relationship to create holes in the prefabricated denture, and rigidly connecting the denture and the abutment by adhesive.

[0043] The following lists some example implementations of this disclosure.

[0044] In a first aspect, this disclosure provides a method for fabricating a denture, comprising: acquiring first oral cavity data, the first oral cavity data including three-dimensional data of a edentulous jaw model and three-dimensional data of a denture model, the denture model being located at a planned position relative to the edentulous jaw model; acquiring second oral cavity data, the second oral cavity data including scan data of a plurality of abutments installed in the oral cavity; determining a positional relationship between the plurality of abutments and the denture model based on the first oral cavity data and the second oral cavity data; forming a plurality of holes in a prefabricated denture corresponding to the denture model based on the positional relationship, each hole being used to accommodate one of the plurality of abutments; and fixing the plurality of abutments to the prefabricated denture.

[0045] In some implementations, the first oral data also includes three-dimensional data of markers positioned relative to the denture model, and the second oral data includes scan data of the markers.

[0046] In some implementations, acquiring the first oral cavity data includes: determining the position of the marker relative to the edentulous jaw model; and acquiring the three-dimensional data of the marker based on the position of the marker.

[0047] In some implementations, the marker is a retention pin for an implant guide, and acquiring the first oral data includes: determining the position of the implant guide relative to the edentulous jaw model; and acquiring three-dimensional data of the retention pin based on the position of the implant guide relative to the edentulous jaw model.

[0048] In some implementations, the first oral cavity data is obtained by digital oral impressions or by scanning physical oral impressions.

[0049] In some implementations, determining the positional relationship between the plurality of abutments and the denture model based on the first oral cavity data and the second oral cavity data includes: converting the first oral cavity data and the second oral cavity data into the same coordinate system; and determining the position and angle of each abutment relative to the denture model.

[0050] In some implementations, securing the plurality of abutments to the pre-formed denture includes: placing the plurality of abutments into corresponding holes in the pre-formed denture; and injecting adhesive into each hole to securely connect the plurality of abutments to the pre-formed denture.

[0051] In some implementations, the pre-formed denture is in a passively connected state when adhesive is injected into the hole of the pre-formed denture.

[0052] In some implementations, the method further includes forming an injection port corresponding to each hole on the side of the prefabricated denture, and injecting the adhesive into the hole via the injection port.

[0053] In some implementations, the injection port is located below the labial crown of the prefabricated denture.

[0054] In a second aspect, this disclosure provides a denture fabrication apparatus, comprising: a computing device including a processor and a memory, the memory storing instructions that, when executed by the processor, cause the computing device to: acquire first oral cavity data, the first oral cavity data including three-dimensional data of a edentulous jaw model and three-dimensional data of a denture model, the denture model being located at a planned position relative to the edentulous jaw model; acquire second oral cavity data, the second oral cavity data including scan data of a plurality of abutments installed in the oral cavity; and determine, based on the first oral cavity data and the second oral cavity data, a positional relationship between the plurality of abutments and the denture model. The denture fabrication apparatus of the second aspect further includes: a drilling device for forming a plurality of holes in a prefabricated denture corresponding to the denture model based on the positional relationship, each hole for receiving one of the plurality of abutments. The denture fabrication apparatus of the second aspect further includes: a connecting device for fixing the plurality of abutments to the prefabricated denture.

[0055] In some implementations, the denture fabrication apparatus further includes an intraoral scanner for scanning the oral cavity to obtain the second oral cavity data, provided that the plurality of abutments are mounted in the oral cavity.

[0056] In some implementations, the first oral data further includes three-dimensional data of markers positioned relative to the denture model, and the second oral data includes scan data of the markers.

[0057] In some implementations, acquiring the first oral cavity data includes: determining the position of the marker relative to the edentulous jaw model; and acquiring the three-dimensional data of the marker based on the position of the marker.

[0058] In some implementations, the marker is a retention pin for an implant guide, and obtaining the first oral data includes: determining the position of the implant guide relative to the edentulous jaw model based on the planned position of the denture model; and obtaining the three-dimensional data of the marker based on the three-dimensional data of the implant guide and the position of the implant guide relative to the edentulous jaw model.

[0059] In some implementations, determining the positional relationship between the plurality of abutments and the denture model based on the first oral cavity data and the second oral cavity data includes: converting the first oral cavity data and the second oral cavity data into the same coordinate system; and determining the position and angle of each abutment relative to the denture model.

[0060] In some implementations, the connecting device is used to: place the plurality of abutments into corresponding holes in the denture model; and inject adhesive into each hole to fix the plurality of abutments to the prefabricated denture.

[0061] In some implementations, the denture model is in a passively connected state when adhesive is injected into the holes of the denture model.

[0062] In some implementations, the drilling device is also used to form an injection port corresponding to each hole on the side of the prefabricated denture, and the connecting device injects the adhesive into the hole via the injection port.

[0063] In some implementations, the injection port is located below the labial crown of the denture model.

[0064] The various embodiments of this disclosure have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical applications, or technical improvements to the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A method for fabricating dentures based on digital scanning, comprising: Acquire first oral cavity data, which includes three-dimensional data of a edentulous jaw model and three-dimensional data of a denture model, wherein the denture model is located at a planned position relative to the edentulous jaw model; Acquire second oral cavity data, which includes scan data of multiple bases installed in the oral cavity; Based on the first oral cavity data and the second oral cavity data, the positional relationship between the plurality of abutments and the denture model is determined; Based on the positional relationship, a plurality of holes are formed on the prefabricated denture corresponding to the denture model, each hole being used to accommodate one of the plurality of abutments; as well as The plurality of abutments are fixedly connected to the prefabricated denture.

2. The method of claim 1, wherein, The first oral data also includes three-dimensional data of markers positioned relative to the denture model, and the second oral data includes scan data of the markers.

3. The method of claim 2, wherein, Obtaining the first oral cavity data includes: Determine the position of the marker relative to the edentulous jaw model; and Based on the location of the marker, the three-dimensional data of the marker is obtained.

4. The method of claim 2, wherein, The marker is a retention pin for the implant guide, and acquiring the first oral cavity data includes: Determine the position of the implant guide relative to the edentulous jaw model; Based on the position of the implant guide relative to the edentulous jaw model, the three-dimensional data of the retention screw is obtained.

5. The method of claim 2, wherein, The first oral cavity data is obtained through digital oral impressions or by scanning physical oral impressions.

6. The method according to claim 1, wherein, Determining the positional relationship between the plurality of abutments and the denture model based on the first oral cavity data and the second oral cavity data includes: Convert the first oral cavity data and the second oral cavity data to the same coordinate system; and Determine the position and angle of each abutment relative to the denture model.

7. The method of claim 1, wherein, Attaching the plurality of abutments to the prefabricated denture includes: The plurality of abutments are placed into the corresponding holes of the prefabricated denture; and Adhesive is injected into each hole to securely connect the plurality of abutments to the prefabricated denture.

8. The method of claim 7, wherein, When adhesive is injected into the hole of the prefabricated denture, the prefabricated denture is in a passive connection state.

9. The method according to claim 7 or 8, further comprising: An injection port corresponding to each hole is formed on the side of the prefabricated denture, and the adhesive is injected into the hole through the injection port.

10. The method of claim 9, wherein, The injection port is located below the labial crown of the prefabricated denture.

11. A denture fabrication apparatus, comprising: A computing device, comprising a processor and a memory, the memory storing instructions that, when executed by the processor, cause the computing device to: Acquire first oral cavity data, which includes three-dimensional data of a edentulous jaw model and three-dimensional data of a denture model, wherein the denture model is located at a planned position relative to the edentulous jaw model; Acquire second oral cavity data, which includes scan data of multiple bases installed in the oral cavity; as well as Based on the first oral cavity data and the second oral cavity data, the positional relationship between the plurality of abutments and the denture model is determined. A drilling device for forming a plurality of holes on a prefabricated denture corresponding to the denture model based on the positional relationship, each hole being used to accommodate one of the plurality of abutments; A connecting device for securing the plurality of abutments to the prefabricated denture.

12. The denture fabrication apparatus according to claim 11, further comprising: An intraoral scanner is used to scan the oral cavity to obtain the second oral cavity data when the plurality of abutments are installed inside the oral cavity.

13. The denture fabrication device of claim 11, wherein, The first oral data also includes three-dimensional data of markers positioned relative to the denture model, and the second oral data includes scan data of the markers.

14. The denture fabrication device of claim 13, wherein, Obtaining the first oral cavity data includes: Determine the position of the marker relative to the edentulous jaw model; and Based on the location of the marker, the three-dimensional data of the marker is obtained.

15. The denture fabrication apparatus according to claim 13, wherein the marker is a retention pin for an implant guide, and acquiring the first oral cavity data includes: Based on the planned position of the denture model, the position of the implant guide relative to the edentulous jaw model is determined; Based on the three-dimensional data of the implant guide and the position of the implant guide relative to the edentulous jaw model, the three-dimensional data of the marker is obtained.

16. The denture fabrication device of claim 11, wherein, Determining the positional relationship between the plurality of abutments and the denture model based on the first oral cavity data and the second oral cavity data includes: Convert the first oral cavity data and the second oral cavity data to the same coordinate system; and Determine the position and angle of each abutment relative to the denture model.

17. The denture fabrication apparatus according to claim 11, wherein, The connection device is used for: Place the plurality of abutments into the corresponding holes of the denture model; and Adhesive is injected into each hole to securely connect the plurality of abutments to the prefabricated denture.

18. The denture fabrication device of claim 17, wherein, When adhesive is injected into the holes of the denture model, the denture model is in a passive connection state.

19. The apparatus of claim 17 or 18, wherein, The drilling device is also used to form an injection port corresponding to each hole on the side of the prefabricated denture, and the connecting device injects the adhesive into the hole via the injection port.

20. The apparatus of claim 19, wherein, The injection port is located below the labial crown of the denture model.

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