Transmitted laser beam power of the resin washed by experimental washing machine for dentures

We had developed the experimental washing machine for denture, and had examined the cleansing property of the machine. The washing machine was using hydrogen peroxide as cleansing solution activated by LED (375 nm) and ultrasonic energy. However, the effect of long-term use of this machine was not examined. The purpose of this study was to examine the color alteration using measurement of transmitted laser beam. This study showed that there was not a change in the measurement of transmitted laser beam after 100 h for washing. If the color alteration in the surface of the samples had occurred because of washing, it was thought that absorption and dispersion of the laser light were influenced. Consequently, this study indicated that this washing machine might not change on the surface of the resin.