A Method of Using Bezier Curves to Design Large Connectors

A Bezier curve and connector technology, which is applied in the field of drawing large connectors for removable dentures, can solve the problems of inconvenient design and manufacturing, poor user experience, and disordered clinical paths, achieving simple design ideas, saving design time, The effect of a high degree of automation

Active Publication Date: 2021-04-20
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most of the design process of clinical removable partial dentures only relies on the hand-drawn drawings of doctors. There are still problems such as difficult design, chaotic clinical paths, and miscellaneous hand-painted styles. Designs with different styles are not convenient for industrial production and manufacturing.
On this basis, few doctors will pay attention to the design effect of the large connector, resulting in the problem of poor user experience

Method used

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  • A Method of Using Bezier Curves to Design Large Connectors
  • A Method of Using Bezier Curves to Design Large Connectors
  • A Method of Using Bezier Curves to Design Large Connectors

Examples

Experimental program
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Effect test

Embodiment 1

[0046] This embodiment discloses a method for designing a large connector using Bezier curves, which includes the following steps:

[0047] A. Import the patient's oral cavity data into the oral partial denture design system (or other similar existing systems) to generate the patient's oral cavity model, the oral cavity data at least includes the patient's missing dentition information.

[0048] B. Based on the missing dentition information, manually design a clasp or select a matching clasp in the system, and place the clasp layer on the corresponding abutment tooth 13 of the oral cavity model. The existing denture design system already has the function of selecting snap rings.

[0049] C. Draw the contour curve of the large connector, including the following C1-C2:

[0050] C1: Identify the snap ring attachment point. In the clasp and retention network layer, several pixels for easy identification are reserved at the end of the small connector, such as a special color desi...

Embodiment 2

[0054] This embodiment discloses a method for designing a large connector using Bezier curves, which includes the following steps:

[0055] A. Importing the patient's oral cavity data into the oral partial denture design system to generate the patient's oral cavity model, the oral cavity data at least including the patient's missing dentition information.

[0056] The patient's oral data can be obtained through inquiries and oral examinations (such as oral scans). The patient's dentition information is an important basic data for denture design.

[0057] B. Select a clasp (or design it in a corresponding system) based on the oral cavity data (dentition loss information), and place the clasp layer on the corresponding abutment 13 of the oral cavity model.

[0058] C. Draw the contour curve of the large connector:

[0059] C1: Identify the snap ring attachment point.

[0060] In the clasp and retention network layers, there are several pixels with special colors at the end of ...

Embodiment 3

[0072] This embodiment discloses a design method of a removable partial denture based on the design method of the above-mentioned large connecting body. Specifically include:

[0073] A. Import the patient's missing dentition information into the existing oral denture design system, which has modeling capabilities.

[0074] B. Execute steps A-C in the above embodiment, after the user selects the shape of the large connector, execute step D; if the shape of the large connector has been configured when importing the exact information of the dentition, then directly execute the above embodiment Steps A-D. In this way, the design of the first-level scheme (the design of the large connector) is completed.

[0075] C. In the design process of the second-level and third-level schemes (the design of other denture parts that match the large connector), if there is a replacement of the snap ring and the position of the abutment teeth, steps A-D will be automatically re-executed. The ...

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Abstract

The invention discloses a method for designing a large connecting body by using a Bezier curve. It includes the following steps: the step of importing the patient's oral data into the modeling system, the step of designing the clasp, the step of determining the connection point of the clasp, producing the anchor point according to the quantity information, position information and oral data of the clasp connection point, and based on the anchor A step of drawing the contour curve of the large connective body, and a step of drawing the large connective body according to the determined shape of the large connective body. The invention realizes the unified style design of the large connecting body through a simple and efficient design method, and is convenient for industrial processing. The large connector designed according to the method is highly matched with the patient's oral cavity, which can improve the user experience of the patient. The design scheme based on the invention facilitates seamless connection with other denture component designs.

Description

technical field [0001] The invention relates to a drawing method of a large connecting body of a removable denture, in particular to a method for designing a large connecting body based on a Bezier curve based on the condition of dentition loss. Background technique [0002] In the design process of oral removable dentures, in most cases, it is necessary to draw a large connector. The large connector is an important part of the removable partial denture. Its main function is to link the denture parts into a whole for transmission and Disperses bite force and increases denture strength. Since there are many forms of large connectors, choose the form that can maintain the health of the remaining teeth and mucous membranes in the patient's oral cavity, so that the dentures can not only restore the chewing function, but also benefit tissue health care. When the periodontal condition of the tooth is poor, if the design of the large connecting body is not good, there will be poor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61C13/00
CPCA61C13/0004
Inventor 于海洋陈昕饶思晗
Owner SICHUAN UNIV
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