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Preparation method of implant fixed bridge repair model

A technology of restoration models and fixed bridges, applied in the field of dental implantology, can solve problems such as cumbersome processing, accuracy and quality errors of restorations, and uneven quality, and achieve good mechanical properties, good geometric similarity, and individualization of the parts. high degree of effect

Pending Publication Date: 2020-08-25
赤峰学院附属医院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main processing method of traditional oral metal restorations is investment lost wax casting technology, but the processing process is cumbersome and time-consuming, and the accuracy and quality of the restorations will have large errors due to different operators, incomplete casting, sticky surface, etc. Sand and other problems often occur, which makes the processing cycle of dentures long, high labor costs, and uneven quality, which can no longer meet the current high-performance, automatic and fast restoration production requirements

Method used

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  • Preparation method of implant fixed bridge repair model

Examples

Experimental program
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Effect test

Embodiment 1

[0033] Combine figure 1 , A method for preparing an implant fixed bridge repair model, including the following steps:

[0034] S1. Obtain a three-dimensional model of the patient’s dental jaw: Scan the upper jaw, lower jaw, and abutment models with a spiral CT scanner to obtain continuous cross-sectional ultra-thin scans to obtain dental jaw point cloud data, and use 3Shape software to perform occlusal relations Automatically match and convert to STL format, save for CAD software use;

[0035] S2, computer-aided design model: import the patient's maxillary and mandibular model data in STL format in S1 into the CAD software, and design the patient's anterior tooth inner crown in the CAD software according to the neck line, crown parameters and the addition of the lingual reinforcement rod Model, save the fixed bridge model of posterior teeth in the CAD software according to the design of the retainer abutment gingival line, the crown parameters, and the connecting body, and save the...

Embodiment 2

[0040] A preparation method of implant fixed bridge repair model, using American PQ6000 spiral CT scanner to do continuous ultra-thin scanning from the lower edge of the mandibular chin to the base of the nasal bone. The scanning parameters are 1mm pitch, 2mm layer thickness, and 0.1-0.2mm interval. .

[0041] Build a local area network with the built-in computer of the spiral CT scanner and another microcomputer, upload the two-dimensional CT images in the spiral CT scanner to the microcomputer through the FPT file transmission format, and rely on adjusting the CT scanner's contrast, brightness and other parameters , Obtain the enhanced two-dimensional CT image, and finally store it in BMP image file format.

[0042] Read the 2D CT image data file with an interval of 0.5-1mm through image synthesis software, extract the edge of the 2D image by the gray-scale segmentation method, and then use the 3D surface reconstruction algorithm to perform 3D reconstruction of the intercepted 2D...

Embodiment 3

[0046] On the basis of Example 2, the STL format of the upper anterior inner crown and the upper posterior fixed bridge model designed by the CAD software were loaded into the rapid prototyping software Magics15.01 for surface refinement and smoothing, and the geometric error value was modified to be 0.005. To optimize the model with a smooth surface, use the rotation command in the Magics software to adjust the spatial position of the part so that the inner surface of the crown is facing up and the outer surface is facing down. At the same time, to reduce the support added to save the molding time, repeat the above steps to complete each upper jaw After adjusting the spatial position of the anterior inner crown, maxillary anterior fixed bridge and maxillary posterior fixed bridge, rationally arrange the forming and placement positions of the crown fixed bridge so that the arrangement direction of the crown and bridge of the maxillary posterior fixed bridge is the same as X / The...

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Abstract

The invention relates to a preparation method of an implant fixed bridge repair model. The preparation method comprises the following steps of acquiring a three-dimensional model of the dental jaw ofa patient, performing computer aided design on the model, performing data processing on a dental crown fixed bridge, performing processing by a selective laser melting technology, and cleaning and polishing the repair model. The preparation method of the model has the advantages that complex parts are formed at a time, the machining period is short, the material utilization rate is high, the mechanical property of workpieces is good, and the individuation degree is high.

Description

Technical field [0001] The invention belongs to the technical field of oral implantology, and specifically relates to a method for preparing an implant fixed bridge repair model. Background technique [0002] A fixed tooth is a restoration that restores one or several missing teeth in the dentition. It is connected with the abutment or implant prepared on both sides of the missing tooth by an adhesive or a fixing device to restore the anatomy and physiology of the missing tooth. Function, because patients with this kind of prosthesis can’t take it on their own, they are called “fixed teeth” for short, and because their structure is similar to bridges, they are also called fixed bridges. Fixed bridges can not only restore the anatomical shape and physiological functions of the masticatory organs, but also compare Maintain the health of the organ for a long period of time and prevent the occurrence of dental and jaw diseases. The fixed tooth is composed of three parts: retainer, p...

Claims

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Application Information

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IPC IPC(8): A61C13/34A61C13/003
CPCA61C13/0004A61C13/0006A61C13/34
Inventor 哈斯达来吕广辉田媛王海志田硕齐长娥
Owner 赤峰学院附属医院
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