Chipping fracture resistance of denture tooth materials.

ABSTRACT:

Objective

The applicability of the edge chipping method to denture tooth materials was assessed. These are softer materials than those usually tested by edge chipping. The edge chipping fracture resistances of polymethylmethacrylate (PMMA) based and two filled resin composite denture tooth materials were compared.

Methods

An edge chipping machine was used to chip rectangular blocks and flattened anterior denture teeth. Force versus edge distance data were collected over a broad range of forces and distances. Between 20 and 65 chips were made per condition depending upon the material, the scatter, and the indenter type. Different indenter types were used including Rockwell C, sharp conical 120(o), Knoop, and Vickers. The edge toughness, Te, was evaluated for different indente

SUBMITTER: Quinn GD 

PROVIDER: S-EPMC4084649 | biostudies-literature | 2014 May

REPOSITORIES: biostudies-literature