The effect of disinfectants on the surface roughness of different condenional silicone impression materials
Tarık Ilhan
Ankara university
Objectives
The characteristics such as stability of the disinfection methods used in measurements and surface clarity are negatively affected.The surface roughness of different silicones types disinfected with immersion method using hypochlorite and glutaraldehyde was measured using a profilometer.
Materials and Methods
This study was funded by the Scientific and Technological Research Council of Turkey(TUBITAK)(Grant Number:1919B012320693).A semi-circular sample with 6 holes, each 2mm deep and 15mm in diameter, compliant with ADA classification, was prepared.Zhermack zeta plus( ITALY) and Adcosill acplus(TURKEY) C-type silicones were prepared by mixing their catalysts and activators. After being placed in three compartments accordingly, the dimensions were examined for surface roughness after polymerization. Totally 24 samples divided into 4 groups. Group 1A, the specimens were soaked in 2% hypochlorite solution for 3 minutes to assess surface roughness. Group 2A, the specimens were soaked in 2% hypochlorite solution for 10 minutes to assess surface roughness. Group 1B, the specimens were soaked in 5% glutaraldehyde solution for 3 minutes to assess surface roughness. Group 2B, the specimens were soaked in 5% glutaraldehyde solution to assess surface roughness.
Results
There was a significant difference between Group 1A and Group 1B in terms of the arithmetic mean roughness value (Ra) and the mean roughness depth (Rz) values. Significant difference was between Group 2A and Group 2B Ra and Rz values . Significant difference was between Group 1A and Group 2A Ra and Rz values. Significant difference was between Group 1B and Group 2B Ra and Rz values (p<0,05).
Conclusions
In this study, it was observed that changing the type of disinfectant affected the surface roughness of the materials. Additionally, increasing the contact time of the measurement material with the disinfectant resulted in observable effects on the surface roughness of the material.