Scanning and positioning assembly for oral implantation and scanning and positioning device for edentulous jaw implantation

Abstract

The utility model discloses a scanning and positioning assembly for oral implantation and a scanning and positioning device for edentulous jaw implantation. The scanning and positioning assembly comprises a scanning main body and at least one positioning piece, the scanning main body comprises a scanning part and an interface part which are sequentially arranged from top to bottom, and one end of the positioning piece is arranged on the periphery of the scanning part in a sleeving manner; by the adoption of the technology, the accuracy of intraoral scanning is remarkably improved, and a more reliable data basis is provided for follow-up oral cavity restoration work; besides, the connecting structure of the scanning main body and the positioning piece is simple, the positioning piece can be conveniently connected in the limited space in the oral cavity, especially the position of the rear alveolar tooth, the preparation time before scanning is greatly shortened, and the efficiency of scanning work is improved; and meanwhile, the operation difficulty and the probability of misoperation are reduced, and even an operator with relatively insufficient experience can smoothly complete the connection operation.

Description

Technical Field

[0001] This application relates to the field of oral implant technology, specifically to an oral implant scanning and positioning component and a scanning and positioning device for edentulous jaw implants. Background Technology

[0002] Intraoral scanning, performed after implant surgery and successful osseointegration (which requires a healing period), is used to obtain the three-dimensional position of the implant within the bone. This is achieved using a scanning positioning device. During intraoral scanning, the positioning device is attached to the implant or its composite abutment, and an intraoral scanner scans the patient's oral cavity. The scanner emits light, acquiring local images of the implant and surrounding oral tissues through the markings and reflective areas of the positioning device. Image fusion technology is then used to reconstruct the three-dimensional image of the oral cavity. Dentists and technicians then combine this three-dimensional image with the patient's oral soft and hard tissue conditions, using computer-aided design (CAD) technology to design the most suitable personalized crowns, bridges, or prostheses for the patient.

[0003] A scanning rod for edentulous jaw implant restoration, as described in authorization announcement CN 217091002 U, includes a scanning rod body, a connecting post, and a connecting plate. The bottom end of the scanning rod body is fitted with a mounting post, and the bottom of the mounting post is fitted with a connecting post. The bottom of the connecting post has a mounting groove, and the top inner wall of the mounting groove has symmetrically formed fixing grooves. The mounting groove contains a connecting plate, and the bottom of the connecting plate is fitted with a connecting rod. The threaded post is installed on the patient's gums, which can lead to a large amount of bacteria remaining in the threads on the outer side of the threaded post. A magnetic suction post at the top of the mounting plate engages with the fixing groove and is attracted by a magnetic plate, thus fixing the threaded post and facilitating its removal. When the threaded post needs cleaning, it can be removed and cleaned separately, without needing to clean the entire scanning rod, making cleaning the threaded post more convenient. However, when scanning the three-dimensional position of implants in edentulous jaw restorations, the lack of adjacent natural teeth as identification landmarks makes it difficult for the scanner to find stable and clear reference points for accurate image matching. This leads to the scanner's inability to accurately determine the spatial relationship and corresponding points between two images during image fusion, resulting in image fusion deviations and failing to achieve the desired accuracy. This reduction in scanning accuracy can severely impact subsequent dental restoration work. For example, in denture fabrication, inaccurate scans can cause the denture to mismatch with the patient's actual oral condition, affecting wearing comfort, stability, and chewing function. It may also increase the rework rate of denture fabrication, prolong the treatment period, and cause unnecessary pain and financial burden to the patient. Utility Model Content

[0004] In view of the above problems, this application provides an oral implant scanning positioning component to solve the problem that it is difficult to find a stable and clear reference point for accurate image matching due to the lack of adjacent natural teeth as identification markers.

[0005] To achieve the above objectives, the inventors provide an oral implantation scanning and positioning component, which includes a scanning body and at least one positioning element; the scanning body includes a scanning section and an interface section arranged sequentially from top to bottom, and one end of the positioning element is sleeved on the outer periphery of the scanning section.

[0006] Furthermore, the projection of the scanning part in the height direction is located within the interface part, so that a limiting platform is formed between the connection between the scanning part and the interface part, and the limiting platform is used to accommodate one end of the positioning member.

[0007] Furthermore, one end of the positioning member is provided with a connecting ring, which is sleeved on the outer periphery of the scanning part.

[0008] Furthermore, the positioning element is formed by connecting one or more positioning rods.

[0009] Furthermore, a connection mark is provided between adjacent positioning rods.

[0010] Furthermore, the cross-section of the positioning rod is circular, arc-shaped, or polygonal.

[0011] Furthermore, a groove is formed at the bottom of the interface part along its central axis; a screw is connected in the groove along its central axis.

[0012] Furthermore, the upper end face of the scanning part is provided with a polygonal hole along its central axis.

[0013] Furthermore, the outer periphery of the scanning unit is provided with a first positioning surface for calibrating the outer contour of the dental arch and / or a second positioning surface for calibrating the inner contour of the dental arch.

[0014] A scanning and positioning device for edentulous implants, employing the aforementioned oral implant scanning and positioning components; comprising at least two adjacent oral implant scanning and positioning components; wherein, a positioning element of one oral implant scanning and positioning component is correspondingly positioned to a positioning element or scanning body of the other oral implant scanning and positioning component, such that the positioning element is parallel to the outer contour of the dental arch between the two oral implant scanning and positioning components.

[0015] Unlike existing technologies, the above-mentioned technical solution can be applied to intraoral scanning in cases lacking adjacent natural teeth, especially for edentulous jaws. The described oral implant scanning positioning component significantly improves the accuracy of intraoral scanning, providing a more reliable data foundation for subsequent oral restoration work. In addition, the connection structure between the scanning body and the positioning component is simple, allowing for easy connection of the positioning component even in the limited space of the oral cavity, especially at the position of the posterior molars, greatly shortening the preparation time before scanning and improving the efficiency of the scanning work. At the same time, it reduces the difficulty of operation and the probability of operational errors, allowing even relatively inexperienced operators to complete the connection operation relatively smoothly.

[0016] The above description of the utility model is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description

[0017] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this utility model and other related contents, and should not be considered as limitations on this application.

[0018] In the accompanying drawings of the instruction manual:

[0019] Figure 1 This is a front view of the oral implant scanning and positioning component described in the specific embodiment;

[0020] Figure 2 This is a schematic diagram of the structure of the scanning body described in a specific embodiment;

[0021] Figure 3 This is a schematic diagram of the structure of the scanning body described in a specific embodiment;

[0022] Figure 4 This is a structural schematic diagram of the positioning component described in a specific embodiment;

[0023] Figures 5-6 This is a schematic diagram illustrating the connection process of the oral implant scanning and positioning component described in a specific implementation method;

[0024] Figure 7 This is a schematic diagram of the structure of the dental implant scanning and positioning component connected to the composite abutment on the implant, as described in a specific embodiment.

[0025] Figure 8 This is a schematic diagram of the installation structure of the scanning and positioning device for edentulous jaw implants as described in the specific embodiment;

[0026] Figure 9This is a schematic diagram of the installation structure of the scanning and positioning device for edentulous jaw implants as described in a specific embodiment.

[0027] The reference numerals used in the above figures are explained as follows:

[0028] 10. Scanning subject;

[0029] 101. Scanning Department;

[0030] 1011, First positioning surface; 1012, Second positioning surface; 1013, Polygonal hole;

[0031] 102. Interface Section;

[0032] 1021. Groove; 1022. Screw; 1023. Limiting platform;

[0033] 20. Positioning components;

[0034] 201. Positioning rod; 202. Connecting ring; 203. Connection mark;

[0035] 30. Composite substrate;

[0036] 40. Implants;

[0037] 50. Dental arch;

[0038] 60. Cross-section of the outer contour of the dental arch; Detailed Implementation

[0039] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended only as examples, not as limiting the scope of protection of this application.

[0040] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0041] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0042] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0043] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order between these entities or operations.

[0044] Without further limitations, the use of terms such as “comprising,” “including,” “having,” or other similar open-ended expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0045] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0046] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. They are only for the purpose of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0047] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral arrangement; it can be a direct connection or an indirect connection through an intermediate medium; it can be a relationship of two components combined together, an interaction relationship between two components, or a connection within two structures. Those skilled in the art to which this application pertains can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0048] In practical applications of oral scanning, an intraoral scanner emits light to acquire local images of oral tissues, which are then used to construct a complete 3D model of the oral cavity through image fusion technology. In this process, accurate image fusion plays a crucial role in the accuracy of the final model. However, intraoral scanners primarily rely on identification markers to determine the spatial relationship between two consecutive images. Therefore, identification markers are the core element for achieving accurate image matching and fusion.

[0049] However, in special cases involving edentulous jaws or the absence of adjacent natural teeth, the lack of a stable and reliable reference point means that intraoral scanners, when performing image fusion, cannot accurately determine the corresponding points between images. This leads to image fusion deviations and severely affects scanning accuracy. This decrease in accuracy can cause a series of problems in subsequent dental restoration work, such as the fabricated dentures not matching the patient's actual oral condition, affecting wearing comfort and chewing function, and even requiring multiple rework sessions, increasing patient suffering and treatment costs.

[0050] See Figures 1-9As shown, this application provides an oral implant scanning and positioning component and a scanning and positioning device for edentulous implants. A positioning element 20 is connected to the periphery of the scanning body 10, allowing the positioning element 20 to be positioned between adjacent implants 40, thus playing a crucial identification role. During intraoral scanning, the positioning element 20 acts as a clear and stable identification marker, providing a reliable image matching basis for the intraoral scanner. When the intraoral scanner acquires images, the positioning element 20 is clearly presented in different images. The scanner can accurately determine the spatial relationship between two consecutive images by recognizing the position, shape, and other features of the positioning element 20 in the image. For example, the geometric features such as the edge and angle of the positioning element 20 can be used for image alignment and matching, thereby achieving precise image fusion. The positioning element 20 is also fitted onto the periphery of the scanning body 10. In actual operation, after the scanning body 10 enters the oral cavity and is positioned, the positioning element 20 can be easily connected to the scanning body 10 within the limited space of the oral cavity. Taking the posterior molar position as an example, this area has narrow space and poor field of vision, making operation more difficult. However, the connection process is relatively simple when the positioning element 20 is attached to the scanning body 10.

[0051] Based on the above, this application provides an oral implant scanning and positioning component and a scanning and positioning device for edentulous jaw implants, which can be applied to intraoral scanning in cases lacking adjacent natural teeth, especially for edentulous jaws. The oral implant scanning and positioning component significantly improves the accuracy of intraoral scanning, providing a more reliable data foundation for subsequent oral restoration work. Based on accurate scanning results, a precise three-dimensional oral model is constructed. Prostheses, implant guides, and other restorations fabricated based on this precise three-dimensional model can better fit the patient's oral tissues, improving wearing comfort and stability, reducing the number of repeated scans due to inaccurate scanning, and alleviating patient discomfort during the scanning process; it even reduces the need for rework of restorations due to insufficient scanning accuracy, shortening the treatment cycle, reducing medical costs, and alleviating patient pain and financial burden. Furthermore, the connection structure between the scanning body 10 and the positioning component 20 is simple, allowing for convenient connection of the positioning component 20 even in the limited space of the oral cavity, especially at the position of the posterior molars, greatly shortening pre-scan preparation time and improving scanning efficiency; it also reduces operational difficulty and the probability of operational errors, allowing even relatively inexperienced operators to complete the connection operation relatively smoothly.

[0052] See Figure 1 As shown, this application provides an embodiment of an oral implant scanning and positioning component, which includes a scanning body 10 and at least one positioning element 20; the scanning body 10 includes a scanning part 101 and an interface part 102 arranged sequentially from top to bottom, and one end of the positioning element 20 is sleeved on the outer periphery of the scanning part 101.

[0053] The aforementioned scanning body 10 provides guidance for intraoral scanning. Specifically, it guides the movement of the intraoral scanner during the scanning process, allowing for more accurate control of the scanner's direction and ensuring comprehensive and thorough scanning of key areas. The scanning section 101 of the scanning body 10 has a certain height so that when the scanning body 10 is connected to the implant 40 or the composite abutment 30 on the implant 40 in the oral cavity, the scanning section 101 is exposed as completely as possible within the mouth. This guides the intraoral scanner to precisely scan around the implant 40 and its surrounding soft tissue, avoiding blind spots and ensuring the acquisition of complete oral images, providing a foundation for subsequent image matching and fusion. The interface section 102 of the scanning body 10 is used to connect to the implant 40 or the composite abutment 30 on the implant 40, ensuring a stable connection of the scanning body 10 to the implant 40 or the composite abutment 30 on the implant 40. To ensure that during the scanning process, the scanning subject 10 can accurately acquire images of the implant 40 and its surrounding tissues, including the position and angle of the implant 40 and the morphology of the surrounding bone tissue, and to avoid deviations in the scanning data due to shaking or displacement.

[0054] This application does not limit the appearance of the scanning unit 101 and the interface unit 102. Their design can be flexibly adjusted according to diverse application scenarios, scanning needs, and the complex anatomical structure of the oral cavity. Specifically, the shapes of the scanning unit 101 and the interface unit 102 can include, but are not limited to, cylinders (suitable for routine dental arch scanning, providing a stable grip and operating angle), elliptical cylinders (optimized to fit the 50° curve of the dental arch, reducing pressure on the buccal and lingual soft tissues), arc-shaped cylinders (with a partially rounded cross-section, suitable for precise scanning of narrow posterior tooth areas or implant sites), and polygonal cylinders (such as triangular prisms and quadrangular prisms, facilitating anti-slip positioning during handheld operation). The appearance of the two can be consistent (e.g., both are cylinders, achieving an integrated streamlined design) or differentiated (e.g., the scanning unit 101 is an arc-shaped cylinder to fit the tooth surface, and the interface unit 102 is a polygonal cylinder to enhance grip stability). In particular, the scanning unit 101 and the interface unit 102 are coaxially arranged, that is, their central axes coincide. The interface 102 locks its spatial position by connecting to the composite abutment 30 on the implant 40 or directly to the implant 40. The data collected by the intraoral scanner along the outer periphery of the scanning unit 101 can be directly mapped to the coordinate system of the implant 40 by the coaxial setting of the scanning unit 101 and the interface 102, avoiding positional errors caused by angular deviations and ensuring a stable transmission path and accurate spatial positioning relationship during the scanning operation.

[0055] During intraoral scanning, the positioning element 20 plays a crucial role as a landmark between adjacent implants 40. As the intraoral scanner emits light to acquire images, the positioning element 20 appears clearly in the image. The appearance of the positioning element 20 in the image becomes an important basis for determining the spatial relationship of the image. By identifying the position, angle, and shape of the positioning element 20 in different images, precise matching and fusion of front and back images can be achieved, thereby improving scanning accuracy and providing accurate data support for subsequent oral restoration work.

[0056] A positioning element 20 is attached to the periphery of the intraoral scanner, allowing it to be positioned between adjacent implants 40 and serving as a crucial identification marker. During intraoral scanning, the positioning element 20 acts as a clear and stable identification marker, providing a reliable basis for image matching. When the intraoral scanner acquires images, the positioning element 20 is clearly visible in different images. The scanner can accurately determine the spatial relationship between two consecutive images by recognizing the position, shape, and other features of the positioning element 20 in the images. For example, the geometric features such as the edges and angles of the positioning element 20 can be used for image alignment and matching, thereby achieving precise image fusion. Simultaneously, the positioning element 20 is fitted onto the periphery of the scanning body 10. In actual operation, once the scanning body 10 enters the oral cavity and is in place, the positioning element 20 can be easily connected to the scanning body 10 within the limited space of the oral cavity. Taking the posterior molar region as an example, this area has narrow space and poor visibility, making operation more difficult. However, the fitting of the positioning element 20 to the scanning body 10 makes this connection process relatively simple.

[0057] During intraoral scanning, to avoid interference from the positioning element 20 on the imaging of the soft tissue surrounding the scanning body 10 and to ensure the acquisition of complete and accurate three-dimensional position data of the implant 40 and soft tissue morphology data of the dental arch, the spatial relationship between the positioning element 20 and the soft tissue needs to be reasonably set. Specifically, an appropriate gap needs to be reserved between the positioning element 20 and the soft tissue surrounding the scanning body 10. This gap needs to avoid the positioning element 20 directly compressing or obstructing the soft tissue, resulting in a scanning blind zone, while ensuring that it can still serve as a stable image recognition reference. If the positioning element 20 is in close contact with the soft tissue, it may obstruct the scanning light or cause tissue deformation, resulting in blurred soft tissue edges or missing data. After reserving the gap, the scanning light can be reflected to the scanner without obstruction, ensuring complete imaging of the texture and morphology of the soft tissue surface (such as gingival papillae and mucosal folds). In addition, the gap can also reduce the discomfort caused by the pressure of the positioning element 20 on the patient and reduce scanning errors caused by factors such as swallowing and tongue movement. Preferably, when the positioning element 20 is fitted around the periphery of the scanning part 101, the central axis of the positioning element 20 is parallel to the dental arch 50. The dental arch 50 is a continuous arc shape. When the central axis of the positioning element 20 is parallel to it, it can ensure that it can maintain a stable distance throughout the entire length of the dental arch 50, avoiding local areas being too close or too far, which would affect soft tissue scanning or lack identification marks. At the same time, the parallel positioning element 20 serves as a stable reference, significantly improving the accuracy of multi-frame image fusion and reducing model misalignment or deformation caused by positional shifts. It is especially suitable for scenarios such as complex tooth loss and joint scanning of multiple implants 40.

[0058] The outer periphery of the scanning unit 101 is used to accommodate the positioning member 20 to ensure that the positioning member 20 remains stable during scanning and does not interfere with intraoral imaging. In some embodiments, a limiting platform 1023 for accommodating one end of the positioning member 20 may be provided in the scanning unit 101. The limiting platform 1023 is formed by protrusion or depression along the circumference of the scanning unit 101. When one end of the positioning member 20 is fitted onto the outer periphery of the scanning unit 101, one end of the positioning member 20 is accommodated on the limiting platform 1023, forming a stepped limiting, which effectively prevents the positioning member 20 from shifting along its axial direction due to longitudinal force (swallowing) (such as the positioning member 20 sliding down), and helps to constrain the positioning member 20 to a fixed position in the scanning unit 101, so that the distance between it and the soft tissues (such as gingiva, buccal mucosa) around the scanning body 10 can be precisely controlled. See also Figure 2 As shown, in some embodiments, a limiting platform 1023 is formed between the connection between the scanning unit 101 and the interface unit 102. That is, the projection of the scanning unit 101 in the height direction is located within the interface unit 102, so that a limiting platform 1023 is formed between the connection between the scanning unit 101 and the interface unit 102. The limiting platform 1023 is used to accommodate one end of the positioning member 20. This avoids the scanning unit 101 from being too bulky and affecting operational flexibility, and is particularly suitable for connection with the scanning body 10 in limited spaces within the oral cavity (such as the posterior molar region).

[0059] One end of the aforementioned positioning member 20 is fitted onto the outer periphery of the scanning unit 101. This end of the positioning member 20 is the part directly connected to and fitted onto the scanning unit 101, forming the core of the connection between the positioning member 20 and the scanning unit 101. The shape of one end of the positioning member 20 corresponds to the outer periphery of the scanning unit 101, allowing it to fit snugly against the outer periphery. If the scanning unit 101 is cylindrical, one end of the positioning member 20 can be an annular or arc-shaped shape corresponding to the outer periphery of the scanning unit 101. In some embodiments, one end of the positioning member 20 is provided with an elastic buckle; when the positioning member 20 is connected to the scanning unit 101, an external force is applied to the elastic buckle, causing both ends of the buckle to elastically deform and unfold outwards; after the elastic buckle is fitted onto the outer periphery of the scanning body 10, the external force is removed, and the elastic buckle returns to its original shape due to its own elasticity, thus securely fitting onto the outer periphery of the scanning body 10. See also... Figure 4 As shown, in some embodiments, one end of the positioning member 20 is provided with a connecting ring 202, which is sleeved on the outer periphery of the scanning part 101. The inner diameter of the connecting ring 202 is designed to fit the outer diameter of the scanning part 101. Based on the preset small gap between the inner diameter of the connecting ring 202 and the outer diameter of the scanning part 101, it is ensured that the connecting ring 202 can be smoothly slidably sleeved along the axial direction of the scanning part 101, while relying on the surface friction between the materials and the clamping force generated by the small deformation. In some embodiments, in order to achieve stable circumferential positioning and prevent the positioning member 20 from rotating or moving axially during scanning, a keyway can also be provided on the outer periphery of the scanning part 101, and a key is provided at one end of the positioning member 20 corresponding to the position of the keyway; when the positioning member 20 is sleeved on the outer periphery of the scanning part 101, the key is embedded in the keyway to achieve circumferential positioning.

[0060] See Figure 4 As shown, the aforementioned positioning element 20 can be formed by connecting one or more positioning rods 201. The positioning element 20 converts the spatial position information between the implants 40 into quantifiable geometric parameters. The number of positioning rods 201 can be individually selected based on the distance between two adjacent composite abutments 30 in the oral cavity. Specifically, by matching the spatial distribution of the implants 40 in the oral cavity, a positioning element 20 of appropriate length is selected and connected to the scanning unit 101, thereby improving scanning accuracy and clinical feasibility. Specifically, the number of positioning rods 201 is analyzed using visual recognition technology, and the spatial distance between adjacent implants 40 is calculated based on the preset length parameters of the positioning rods 201, thus converting the spatial position information of the implants 40 into quantifiable geometric parameters. Accurate measurement of the implant spacing can avoid positional conflicts during prosthesis design (such as crowns being too tight or too loose), ensuring precise matching of the prosthesis (crown, bridge, or denture, etc.) fabricated based on the three-dimensional oral model.

[0061] The above-mentioned multiple positioning rods 201 can be connected in a fixed manner, such as by welding, integral molding or high-strength adhesive to form an integral structure that cannot be disassembled; or they can be connected in a detachable manner, such as by threaded connection, snap-fit ​​and other quick-release structures.

[0062] See Figure 4 As shown, in some embodiments, a connection mark 203 is provided between adjacent positioning rods 201. The connection mark 203 can be used to identify the number of connections of the positioning rods 201 and spatial alignment. The connection mark 203 can be an optical mark, such as one that contrasts with the positioning rods 201 using a specific color. It can also be a mechanical mark, such as one that provides a circumferential concave or convex structure or groove at the connection point of the positioning rods 201.

[0063] The cross-sectional shape of the aforementioned positioning rod 201 can be flexibly designed according to clinical needs, including but not limited to circular, arc-shaped (such as semi-circular, fan-shaped) or polygonal (such as triangular, hexagonal) geometric shapes. The positioning rods 201 within the same positioning component 20 can adopt a homogeneous design (each rod has a uniform cross-sectional shape) or a differentiated design (combination of multiple shapes).

[0064] The connection between the interface portion 102 and the implant 40 or composite abutment 30 must meet high precision and high stability requirements. The interface portion 102 can achieve precise docking through threaded connection, snap-fit ​​connection, or magnetic connection. (See also...) Figure 3 As shown, in some embodiments, a groove 1021 is formed upward along its central axis at the bottom of the interface portion 102; a screw 1022 is connected to the groove 1021 along its central axis. The groove 1021 is used to accommodate the top of the implant 40 or the adapter structure of the composite abutment 30. The screw 1022 connected to the central axis inside the groove 1021 is used for threaded connection with the implant 40 or the composite abutment 30. Through the helical engagement of the screw 1022 with the threaded hole of the implant 40 or the composite abutment 30, the rotational force is converted into an axial fastening force, ensuring that the interface portion 102 and the implant 40 form a rigid connection; at the same time, the groove 1021 evenly distributes the force of the screw 1022 to the base of the interface portion 102 and restricts further radial displacement of the interface portion 102, ensuring that the spatial position of the interface portion 102 and the implant 40 correspond precisely. The screw 1022 can be fixedly connected to the groove 1021 along the central axis of the interface portion 102 by welding or integral molding.

[0065] See Figure 2As shown, in some embodiments, the upper end face of the scanning unit 101 is provided with a polygonal hole 1013 downward along its central axis. The polygonal hole 1013 is used to adapt the operating head of a special tool (such as a multi-faceted drive rod). The polygonal hole 1013 matching the operating head of the tool can be hexagonal, quincunx-shaped, etc. During operation, the operating head of the special tool is inserted into the polygonal hole 1013 of the scanning unit 101. By rotating the special tool, the scanning unit 101 is rotated synchronously, so that the screw 1022 of the interface unit 102 rotates accordingly, forming a helical engagement with the threaded hole on the top of the implant 40 or the composite abutment 30. Based on the transmission structure of the polygonal hole 1013 and the special tool, through the principle of mechanical transmission and torque control, the screw 1022 and the implant 40 or the composite abutment 30 are precisely engaged, which can ensure the stability and accuracy of the transmission, avoid slippage or inaccurate rotation during operation, and help improve the quality and efficiency of the connection.

[0066] See Figure 2As shown, in some embodiments, a first positioning surface 1011 and / or a second positioning surface 1012 are provided on the outer periphery of the scanning unit 101. These two surfaces can work independently or collaboratively to construct a precise spatial positioning system to optimize image acquisition by the intraoral scanner. Specifically, the outer periphery of the scanning unit 101 is provided with a first positioning surface 1011 for calibrating the outer contour of the dental arch 50 and / or a second positioning surface 1012 for calibrating the inner contour of the dental arch 50. The first positioning surface 1011 serves as a reference for optical scanning. In clinical operation, when the scanning body 10 is installed in the oral cavity, the first positioning surface 1011 of the scanning unit 101 can correspond to the sectional surface 60 of the outer contour of the dental arch or to the perpendicular surface of the dental arch. After intraoral scanning is completed, the horizontal reference of the scanning coordinate system can be quickly established using the automatic recognition algorithm of the scanning software, and image fusion calibration can be performed based on the first positioning surface 1011. Similarly, the second positioning surface 1012 serves as a reference for optical scanning. In clinical practice, when the scanning body 10 is installed in the oral cavity, the second positioning surface 1012 of the scanning unit 101 corresponds to the sectional surface of the inner contour of the dental arch or the perpendicular surface of the dental arch. After the oral scan is completed, the horizontal reference of the scanning coordinate system can be quickly established in conjunction with the automatic recognition algorithm of the scanning software. At the same time, image fusion calibration can be performed based on the second positioning surface 1012. The aforementioned first positioning surface 1011 and second positioning surface 1012 can be configured individually or simultaneously for dual positioning to ensure the accurate pose of the scanning unit 101 in three-dimensional space. The aforementioned first positioning surface 1011 and second positioning surface 1012 can be arranged adjacently or relative to each other. In some embodiments, the first positioning surface 1011 and second positioning surface 1012 are arranged relative to each other, and the first positioning surface 1011 and second positioning surface 1012 form an angle, jointly constructing a spatial calibration system. This system can constrain the pose of the scanning unit 101 from two dimensions, and automatically compensate for deviations caused by soft tissue deformation or instrument obstruction through angle calculation, effectively improving the scanning success rate.

[0067] See Figures 5-6 as well as Figure 7 As shown, the working principle of the above embodiment is as follows: First, the scanning body 10 is connected to the implant 40 or the composite abutment 30 on the implant 40 in the oral cavity through the interface part 102, so that the scanning part 101 is exposed as completely as possible inside the mouth; then, one end of the positioning member 20 is sleeved on the scanning part 101, and the positioning member 20 is positioned on the soft tissue between the implants 40. The intraoral scanner is used to scan around the scanning body 10 inside the mouth, and the intraoral scanner emits light to acquire images of the implant 40 and the surrounding soft tissue. Finally, the acquired images are matched based on the positioning member 20, and a complete three-dimensional model of the oral cavity is constructed through image fusion technology.

[0068] See Figure 8 and Figure 9As shown, this application also provides a scanning and positioning device for edentulous jaw implantation, which applies the above-mentioned oral implantation scanning and positioning components; the scanning and positioning device includes at least two adjacent oral implantation scanning and positioning components, and through the collaborative positioning mechanism among multiple oral implantation scanning and positioning components, and by integrating the data of each component according to the global coordinate system, the positioning element 20 performs feature matching to achieve precise image fusion and construct a complete three-dimensional oral model.

[0069] See Figure 8 As shown, in some embodiments, during intraoral scanning, the positioning element 20 of one dental implant scanning positioning component is correspondingly set with the scanning body 10 of another dental implant scanning positioning component, so that the positioning element 20 is parallel to the outer contour of the dental arch 50 between the two dental implant scanning positioning components, that is, so that the positioning element is parallel to the cross-section 60 of the outer contour of the dental arch between the two dental implant scanning positioning components.

[0070] See Figure 9 As shown, in some implementations, during intraoral scanning, the positioning element 20 of one dental implant scanning positioning component is correspondingly positioned with the positioning element 20 of another dental implant scanning positioning component, so that the two positioning elements 20 are parallel to the outer contour of the dental arch 50 between the two dental implant scanning positioning components. That is, the positioning elements 20 of two adjacent positioning components are arranged in parallel, parallel to the cross-section 60 of the outer contour of the dental arch between the two dental implant scanning positioning components.

[0071] The aforementioned corresponding settings can be either abutting or spaced. Preferably, the positioning elements 20 in different dental implant scanning positioning components have different shapes, i.e., the positioning rods 201 have different shapes. During the image fusion stage, the shape and position of the positioning elements 20 are double-checked to avoid incorrect image matching, enhance the accurate fusion of scan data, and improve adaptability to complex scenarios and operational efficiency.

[0072] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. A dental implant scanning and positioning component, characterized in that, It includes a scanning body and at least one positioning element; the scanning body includes a scanning part and an interface part arranged sequentially from top to bottom, and one end of the positioning element is sleeved on the outer periphery of the scanning part; one end of the positioning element is provided with a connecting ring, and the connecting ring is sleeved on the outer periphery of the scanning part so that the positioning element is located between adjacent implants as an identification mark, providing a reliable image matching basis for the intraoral scanner.

2. The oral implant scanning and positioning component according to claim 1, characterized in that, The projection of the scanning part in the height direction is located within the interface part, so that a limiting platform is formed between the connection between the scanning part and the interface part, and the limiting platform is used to accommodate one end of the positioning member.

3. The oral implant scanning and positioning component according to claim 1, characterized in that, The positioning element is formed by connecting one or more positioning rods.

4. The oral implant scanning and positioning component according to claim 3, characterized in that, A connection mark is provided between adjacent positioning rods.

5. The oral implant scanning and positioning component according to claim 3, characterized in that, The cross-section of the positioning rod is circular, arc-shaped, or polygonal.

6. The oral implant scanning and positioning component according to claim 1, characterized in that, A groove is formed at the bottom of the interface part along its central axis; a screw is connected in the groove along its central axis.

7. The oral implant scanning and positioning component according to claim 1, characterized in that, The upper surface of the scanning unit is provided with a polygonal hole along its central axis.

8. The oral implant scanning and positioning component according to claim 1, characterized in that, The outer periphery of the scanning unit is provided with a first positioning surface for calibrating the outer contour of the dental arch and / or a second positioning surface for calibrating the inner contour of the dental arch.

9. A scanning and positioning device for edentulous jaw implants, employing the oral implant scanning and positioning component as described in any one of claims 1 to 8; characterized in that, It includes at least two adjacent dental implant scanning and positioning components; wherein, the positioning element of one dental implant scanning and positioning component is correspondingly positioned with the positioning element or scanning body of the other dental implant scanning and positioning component, so that the positioning element is parallel to the outer contour of the dental arch between the two dental implant scanning and positioning components.

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