2010 Volume 21 Issue 3 Pages 141-148
Although the histological changes in tooth enamel following Er:YAG laser application have been extensively studied, the acid resistance and remineralization of tooth surfaces after laser application have not been evaluated. In the present study, the tooth surfaces following Er:YAG laser application were observed by quantitative light-induced fluorescence (QLF) to ascertain the effects of laser output, and the following results were obtained.
After Er:YAG laser irradiation and high-speed drill preparation, the average fluorescence loss (ΔF) and mineral loss (ΔQ) increased and area decreased in specimens that had been immersed in remineralized solution for four weeks. However, the response of the laser-irradiation side was about three times better than that of the side ground by the high-speed drill.
These results suggest that:
1. Er:YAG laser irradiated enamel is effective for remineralization treatment.
2. QLF is a useful observation method for determining the prognosis of tooth surfaces following Er:YAG laser application.
