抄録
Abrasion of denture liners was studied using three kinds of resilient lining materials. The weight was markedly decreased with the frequency of brushing in polyolefin and silicone materials. Decreases in weight were hardly recognized in polyfluoroethylene material.
The mean roughness and maximum height were markedly increased with the frequency of brushing in polyolefin and silicone materials. On the other hand, these were hardly increased in polyfluoroethylene material.
Scanning electron microscopy after 100, 000 times of brushing revealed the appearance of distinct line-like marks in polyolefin and silicone materials, while such marks were not observed in polyfluoroethylene material.
In scanning electron micrcscopy, the surface texture of the three resilient denture lining materials were not changed after dipping in a denture cleaning-solution for one month.
These results suggest that mechanical brushing and chemical soke-cleaning are suitable for Cleaning of polyfluoroethylene material, while chemical soak-cleaning is suitable for polyolefin and silicone materials.
