Authors

Salman Hamdan, Ghassan Wazir, Aous Dannan

Published in

Received 11 January 2016 and Accepted 9 March 2016

Abstract

  Few researches have been conducted researches on the influence of the type of dental stone used for fabrication of casts on the adaptation of denture bases. The purpose of this study was to compare the effect of two types of stone casts on the accuracy of fit in complete denture bases

 Methods: Using sixty fully replicated master casts obtained by duplicating a metal. die representing an edentulous maxillary arch, 30 castswere poured in type III dental stone and 30 made from type V dental stone. All dentures were completely waxed using a same thickness of base plate wax and teeth were made for the purpose of accuracy. Following polymerization in the same working conditions, dentures were trimmed. After silicone injection between each denture and metal die was performed, weighing the
elastomeric silicone layer was performed to study adaptation of dentures. Metal die was used both before copying the casts and after storing them in water for two months

Keywords

Dimensional change, Acrylic denture
base, Adaptation accuracy, Dental stones