Complete denture designing and manufacturing method based on CAD/RP technology

Abstract

The invention discloses a neutral zone complete denture manufacturing method based on a Computer Aided Design/RapidPrototyping (CAD/RP) technology. The method comprises the following steps: a complete denture artificial tooth three-dimensional image database is established on the basis of the parameterized positioning; the data of upper and lower edentulous jaws with centric relation and neutral zone jaw is collected on the basis of the three-dimensional laser scanning technology with spatial position relation; the complete denture artificial articulation conforming to the theory of neutral zone and complete denture balanced occlusion tooth arrangement is designed on the basis of reverse engineering software, the gum and the base conforming to the complete denture neutral zone theory and the aesthetic principle are designed on the basis of the reverse engineering software; a complete denture flask is designed and processed on the basis of the CAD/RP technology; and the complete denture restoration is finished through the manual tooth inserting and the adhesive applying. The invention creates the concept of a two-step method, finishes the manual tooth arrangement and the wax pattern preparation with the highest technical content and the most complex operation in the traditional fabrication by using the computer and rapid prototyping technology, can finish the full fabrication of the complete denture only by being finally aided with the simple manual step, i.e., the second step of the two-step method, greatly simplifies the complex working procedures of the traditional handwork process, improves the efficiency and the accuracy of restoration and realizes the transformation of the designing and manufacturing process of the complete denture from the manual mode to the digital mode.

Description

technical field [0001] The invention relates to a production method of a neutral zone complete denture based on CAD / RP (Computer Aided Design / Rapid Prototyping, computer-aided design and rapid prototyping) technology. Background technique [0002] With the aging of my country's population, patients with complete dentition loss, that is, edentulous jaws, are increasing year by year. According to the second national oral health epidemic sampling survey data, edentulous patients aged 65-73 in urban and rural areas in my country account for 10.51%. There are about 15 million edentulous patients in all age groups. Various types of complete dentures are currently the most important restoration method for edentulous patients. The neutral zone total denture is the ideal state of the complete denture, and the complete denture made with the neutral zone theory can meet the individual requirements of the soft tissues in the oral cavity of edentulous patients, such as the masticatory mu...

AI Technical Summary

Problems solved by technology

[0006] In order to make up for the gaps in the prior art, the purpose of the present invention is to propose a high-efficiency, low-workload and suitable for clinical application of the neutral zone complete denture design and production method to produce accurate, comfortable and durable complete denture resto

Images