Manufacturing of Removable Complete Dentures Using Vacuum Casting Technique

摘要

This paper presents the research on manufacturing for full denture components. The aim is to develop a new manufacturing procedure for the removal full denture by integrating the techniques used in the Advanced Manufacturing Technology (AMT). The 3D-ATOS scanning system was used to obtain the surface data of the denture teeth sets, the edentulous models and the rims for patient. The surface quality of the digitized images was further refined by using Geomagic Studio 10 and the complete model of the denture components were prepared using Solid Work CAD application tool. A set of library for teeth was developed in the CAD system which includes the reference lines and points for setup and assembly process. The master models of the full denture were produced using MJM rapid prototyping system. The full denture was fabricated using acrylic resin (Vertex Castavaria) material using vacuum casting technique. The finish denture was then tested on patient and found satisfactory with good fitting accuracy as compared to the conventional denture. The use of vacuum casting procedure also has improved about 30% flexural strength as compared to the conventional technique (compression flask).