Intraoral scanning rod for edentulous jaw implantation

Abstract

The utility model belongs to the technical field of edentulous jaw implantation, and particularly relates to an intraoral scanning rod for edentulous jaw implantation, which comprises an intraoral scanning rod and a scanning rod positioning frame, the intraoral scanning rod comprises an implant connecting part, and the top of the implant connecting part is vertically connected with an extension connecting part. The top of the extension connecting part is vertically connected with a scanning recognition part, the extension direction of the scanning recognition part is opposite to that of the implant connecting part, a groove is formed in the top of the scanning recognition part, the cross section of the groove is an isosceles triangle, and the vertex of the isosceles triangle is aligned with the right-angle position of the scanning recognition part and the connecting part; a handle is arranged on the side face of the scanning rod positioning frame, the scanning rod positioning frame is used for being matched with the size of a scanning head of a scanner, and the scanning recognition part is placed within the range of the scanning rod positioning frame. And the internal scanning rod converts the positions of the dental implant dispersed without teeth to be concentrated in the range of a common oral scanning probe, so that the problems of large manufacturing error, over-high cost and low mold taking efficiency of the conventional dental implant impression are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of edentulous jaw implant, and particularly relates to an intraoral scanning rod for edentulous jaw implant.

Background Art

[0002] An accurate impression is the key and prerequisite for the successful implant-supported restoration of the edentulous jaw, which is beneficial to improving the accuracy of the implant restoration, and can reduce serious complications such as marginal bone resorption around the implant, peri-implantitis, loosening of the implant and the upper abutment, and fracture of the stent. Compared with the relatively easy passive placement of single implant, the impression-taking range of the edentulous jaw restoration method supported by multiple implants has a large span. Once impression-taking deformation occurs during the process of replicating the relative positions between implants, it is very likely that the superstructure of the entire restoration cannot be passively placed. Therefore, the impression-taking process is relatively cumbersome. Traditional impression-taking methods include resin splint cutting and reconnecting method, dental floss resin connection method, bur connection method, prefabricated rigid connecting rod method, etc. However, traditional impression-taking methods all have the problem of resin shrinkage, which will affect the accuracy of impression-taking, and there are also disadvantages such as time-consuming and laborious operation process and poor patient comfort.

[0003] At present, digital intraoral three-dimensional scanning has been widely used. As a modern intraoral scanning diagnosis and treatment technology, digital intraoral three-dimensional scanning has many advantages. First, it can avoid the deformation problem of traditional impression-taking and provide more accurate data support for processing and producing impressions; second, it can quickly obtain oral models, avoid the discomfort of traditional impression-taking, save treatment time and improve treatment effect; third, digital intraoral three-dimensional scanning is also convenient for data storage, sharing, visual education and communication, convenient for patients to return for reexamination, and more conveniently saves and shares typical cases for the development of the entire industry.

[0004] However, for the digital intraoral three-dimensional scanning in the prior art, a three-dimensional scanner is required to combine multiple field-of-view real-time stitching and superimposing images to obtain complete model data. In the mouth of patients with tooth loss, there is only relatively flat mucosa, and there are few easily recognizable marking points such as teeth as stitching media. When performing image stitching, the stitching error is relatively large. In the prior art, the accuracy of image stitching is often improved and the stitching error is reduced by setting complex structures and shapes on the scanning rod to achieve the enlargement of the stitching area and the dispersion of stitching points. However, this method still relies on a large number of stitching to complete image fitting and cannot fundamentally solve the problem of multi-image stitching error caused by the large dispersion span of the scanning rod.

[0005] To address the limitations of intraoral scanning, in recent years, clinical practice has gradually shifted towards using extraoral scanning devices to obtain digital impressions, which can significantly reduce stitching errors, such as photogrammetry, ICam4D photography imaging & soft tissue oral scanning (Switzerland), PIC photography imaging & soft tissue oral scanning (Spain), video capture method, and digital scanning rod method. Existing research has confirmed that the accuracy of taking impressions using digital impression methods for edentulous implant models is relatively high, and the iteration of the above methods is also a key manifestation of the concept of precision and comfort in the diagnosis and treatment process.

[0006] However, when borrowing extraoral scanning devices for digital impression taking of edentulous implants, there are still the following applicable bottlenecks and solution paths that need to be adjusted urgently. First, current extraoral scanning devices rely heavily on imports, with high introduction costs, and their universality and feasibility are relatively low for regions with unbalanced development. Second, with the implementation of the domestic implant centralized procurement policy and the reduction of implant prices, if digital impression taking for edentulous implants widely relies on imported devices, it will result in a large number of patients paying service premiums, so new solution paths are still needed.

Utility Model Content

[0007] The utility model provides an intraoral scanning rod for edentulous implant to solve the problems of low accuracy, high cost, and low impression taking efficiency of edentulous implant impressions in the prior art.

[0008] The technical solution of an intraoral scanning rod for edentulous implant provided by the utility model is as follows:

[0009] An intraoral scanning rod for edentulous implant, the intraoral scanning rod includes an intraoral scanning rod and a scanning rod positioning frame. The intraoral scanning rod includes an implant connection part. At the top of the implant connection part, an extension connection part is vertically connected. At the top of the extension connection part, a scanning and recognition part is vertically connected. The extension direction of the scanning and recognition part is opposite to that of the implant connection part. A groove is provided at the top of the scanning and recognition part. The cross-section of the groove is an isosceles triangle, and the vertex of the isosceles triangle is aligned with the right angle of the scanning and recognition part and the connection part. A handle is provided on the side of the scanning rod positioning frame. The scanning rod positioning frame is used to adapt to the size of the scanning head of the scanner. When in use, the scanning and recognition part is placed within the range of the scanning rod positioning frame to indirectly reflect the position of the implant.

[0010] Particularly, for the intraoral scanning rod for edentulous implant, the groove is a conical groove.

[0011] Particularly, for the intraoral scanning rod for edentulous implant, the diameter of the implant connection part is 4 mm.

[0012] Particularly, for the intraoral scanning rod for edentulous implant, the length of the extension connection part ranges from 6 to 15 mm.

[0013] Specifically, the intraoral scanning rod for edentulous jaw implantation is characterized in that an axially penetrating connection hole is provided on the implant connection part, and a connection bolt is provided in the connection hole for fixedly connecting the intraoral scanning rod to the implant.

[0014] Specifically, the intraoral scanning rod for edentulous jaw implantation is characterized in that the handle is arranged on the side where the length of the scanning rod positioning frame is located and fixed at the middle position of the side.

[0015] The beneficial effects are as follows:

[0016] (1) By directly identifying the scanning recognition parts of multiple intraoral scanning rods with the intraoral scanning probe of an external three-dimensional scanner, it is not necessary to perform image acquisition and video stitching multiple times, and the accuracy of edentulous jaw implant impression taking can be improved simply and quickly. It solves the problem that during the stitching process of each group of images of traditional scanning rods, the scanning rods are scattered in the mouth, the positions are not concentrated, and the distance between each scanning rod is relatively large, resulting in a large error during the image stitching process, inaccurate implant position, and affecting the passive seating of the later restoration.

[0017] (2) The intraoral scanning rod can be constructed for easy one-piece molding manufacturing. The production and manufacturing process is simple, the production cost is low, and moreover, it is not necessary to use expensive scanning devices (such as PIC and other equipment) anymore, and the edentulous jaw implant impression taking can be completed quickly and accurately.

[0018] (3) During impression taking, it is not necessary to collect and stitch multiple images like traditional intraoral scanning. Instead, by directly scanning the scanning recognition parts of multiple intraoral scanning rods installed on the jaw surface, the operator does not need to move the intraoral scanning rod over a large range multiple times. The overall operation process is simple and the operation efficiency is high. Moreover, shortening the impression taking time can also improve the comfort of the patient during the treatment process.

[0019] (4) The intraoral scanning rod can be constructed for easy one-piece molding manufacturing. The production and manufacturing process is simple, the production cost is low, and moreover, it is not necessary to use expensive extraoral scanning devices anymore, and the edentulous jaw implant impression taking can be completed quickly and accurately.

Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the installation structure of the intraoral scanning rod on a jaw surface in Embodiment 1 provided by the present utility model;

[0021] Figure 2 It is a schematic diagram of the structure of the intraoral scanning rod in Embodiment 1 provided by the present utility model;

[0022] Figure 3 It is a top view of the scanning recognition part of the intraoral scanning rod in Embodiment 1 provided by the present utility model;

[0023] Figure 4 It is a top view of the intraoral scanning rod mounting structure on one jaw surface of Embodiment 1 provided by the present utility model;

[0024] Figure 5 It is a schematic structural diagram of Embodiment 1 provided by the present utility model;

[0025] Figure 6 It is a schematic structural diagram of the scanning rod positioning frame of the present utility model.

[0026] 1. Intraoral scanning rod; 11. Implant connection part; 111. Connection hole; 12. Extended connection part; 13. Scanning and recognition part; 131. Groove; 2. Scanning rod positioning frame; 21. Handle; 3. Implant.

Specific implementation manner

[0027] In order to make the purpose, technical solution and advantages of the present utility model clearer, the following further details the present utility model in conjunction with the attached drawings.

[0028] Specific Embodiment 1 of an intraoral scanning rod for edentulous jaw implant provided by the present utility model:

[0029] An intraoral scanning rod for edentulous jaw implant provided in this embodiment includes an intraoral scanning rod and a scanning rod positioning frame. The intraoral scanning rod includes an implant connection part, an extended connection part and a scanning and recognition part. The bottom of the implant connection part is used to connect the implant. An axially penetrating connection hole is provided on the implant connection part, and a connection bolt is provided in the connection hole. The connection bolt is used to fixedly connect the intraoral scanning rod to the implant. As Figure 2 shown, the implant connection part is directly connected to the implant. The top of the implant connection part is connected to the extended connection part. The extended connection part is perpendicular to the implant connection part. The value range of the length of the extended connection part is 6 - 15 mm. The top of the extended connection part is connected to the scanning and recognition part. The scanning and recognition part is perpendicular to the extended connection part, and the extending direction of the scanning and recognition part is opposite to the extending direction of the implant connection part. A groove is provided at the top of the scanning and recognition part. The cross-section of the groove is an isosceles triangle, and the apex of the isosceles triangle is aligned with the right angle of the scanning and recognition part and the connection part. In this embodiment, as Figure 3 shown, the groove is a tapered groove, and the cross-section of the tapered groove is an isosceles triangle. In this embodiment, the diameter of the implant connection part is 2 mm, the length is 4 mm, the length of the extended connection part is 6 - 12 mm, the diameter is 4 mm, the diameter of the scanning and recognition part is 4 mm, and the length is 6 mm.

[0030] The scanning rod positioning frame is as Figure 6As shown, the scanning rod positioning frame is 15mm long, 10mm wide, 4mm high, and is rectangular in shape. A handle is provided on one side. In this embodiment, the handle is provided on the side where the length is located and is fixed in the middle of the side for easy holding. The scanning rod positioning frame is used to adapt to the size of the scanning head of the scanner. When the scanner is used for scanning, the scanning identification part is placed within the range of the scanning rod positioning frame. The scanning rod positioning frame can effectively determine whether the fixed position of the scanning rod is within the scanning range of the scanning head. In this embodiment, the scanning rod positioning frame is a rectangular frame structure. The scanning rod positioning frame is 15mm long, 10mm wide, and 4mm high, and the cross section of the handle is cylindrical.

[0031] like Figure 1 , Figure 2 As shown, the intraoral scanning rod is set on the implant, and the specific number of intraoral scanning rods is determined according to the patient's tooth loss and the number of implants set. When using a scanner for scanning, the intraoral scanning probe identification end is placed on the scanning rod positioning frame to identify the positions of all intraoral scanning rods. In this embodiment, the maxillary or mandibular single jaw is provided with an intraoral scanning rod and four intraoral scanning rods are provided on the maxillary and mandibular single jaws. The doctor holds the scanning rod positioning frame and places the scanning rod positioning frame in the middle position of the top of the scanning identification part of the four scanning rods, and the height from the top of the scanning rod is within the range of 1-2mm, ensuring that the top of the scanning identification part of the four scanning rods is within the range of the scanning rod positioning frame. After that, the intraoral scanning probe moves in a small range to identify the top structure of the scanning identification part, and the scattered position of the implant in the mouth can be automatically calculated, and the positions of multiple implants in the maxillary or mandibular edentulous jaw can be quickly and accurately converted into regional integrated centralized collection, avoiding large implant position errors due to the dispersion of the scanning rod, which is not conducive to the passive placement of the restoration.

[0032] Specific embodiment 2 of an intraoral scanning rod for edentulous jaw implantation provided by the utility model:

[0033] The only difference between this embodiment and embodiment 1 is that the length of the extended connection portion is 10 mm. In other embodiments, the length of the extended connection portion may also be any value within the range of 6-15 mm, such as 6.5 mm, 8 mm or 15 mm.

[0034] Specific embodiment 3 of an intraoral scanning rod for edentulous jaw implantation provided by the utility model:

[0035] The only difference between this embodiment and the first embodiment is that the groove is a rectangular groove. In other embodiments, the groove may also be a trapezoidal groove or a circular groove.

[0036] Specific embodiment 4 of an intraoral scanning rod for edentulous jaw implantation provided by the utility model:

[0037] The difference between this embodiment and Embodiment 1 is only that six intraoral scanning rods are provided on one jaw surface and are evenly distributed on the jaw surface.

Claims

1. An intraoral scanning rod for edentulous jaw implantation, characterized in that: The intraoral scanning rod includes an intraoral scanning rod and a scanning rod positioning frame. The intraoral scanning rod includes an implant connecting part. The top of the implant connecting part is vertically connected with an extension connecting part. The top of the extension connecting part is vertically connected with a scanning identification part. The extension direction of the scanning identification part is opposite to the extension direction of the implant connecting part. The top of the scanning identification part is provided with a groove. The cross-section of the groove is an isosceles triangle. The vertex of the isosceles triangle is aligned with the right angle between the scanning identification part and the connecting part. A handle is provided on the side of the scanning rod positioning frame. The scanning rod positioning frame is used to adapt to the size of the scanning head of the scanner. When in use, the scanning identification part is placed within the range of the scanning rod positioning frame.

2. The intraoral scanning rod for edentulous jaw implantation according to claim 1, characterized in that: The groove is a tapered groove.

3. The intraoral scanning rod for edentulous jaw implantation according to claim 2, characterized in that: The diameter of the implant connection part is 4mm.

4. The intraoral scanning rod for edentulous jaw implantation according to claim 3, characterized in that: The length of the extended connection portion ranges from 6 to 15 mm.

5. The intraoral scanning rod for edentulous jaw implantation according to claim 4, characterized in that: An axially penetrating connecting hole is arranged on the connecting part of the implant, and a connecting bolt is arranged in the connecting hole. The connecting bolt is used to fix the intraoral scanning rod on the implant.

6. The intraoral scanning rod for edentulous jaw implantation according to claim 5, characterized in that: The handle is arranged on the long side of the scanning rod positioning frame and is fixed at the middle position of the side.

Images