Study on Surface Reproduction of a Dental Stone Model : Measurement of Surface Roughness of Dental Stone Models in Combination with Alginate Impression Materials by Non-contact Photogenic Surface Roughness Analyzing System

Abstract

The surface roughness of dental stone models in combination with alginate impression materials was measured by using a non-contact photogenic surface roughness analyzing system.This system was made by way of trial to evaluate the surface roughness simply.A correlation was found between the measured value and Ra.From the SEM observation, the surface roughness of dental stone models showed a tendency to be influenced by its crystal structure.In conclusion, this analyzing system can be used to evaluate the surface roughness of dental stone models in combination with alginate impression materials.