Comparison of the Effect of Different Lasers Wavelengths and Powers on Teeth Bleaching

Abstract

Lasers have been long introduced in dentistry. Today lasers are been used for Endodontic, Periodontal, Oral Surgery as well as restorative procedures. Here, the effect of different wavelengths on teeth bleaching and in pulp temperature was investigated. Teeth were exposure to diode lasers with 532 nm, 820 nm, 915 nm and continue Nd: YAG 1064nm laser in different exposure times specifically (30, 40, 50, and 60) second, the degree of staining after bleaching was evaluated, and the effects of laser bleaching in pulp temperature with and without gel during exposure to laser beam was determined. The results led to the conclusion that the temperature rises with increasing wavelength, power, and exposure time, whereas using gel shows lower rise in temperature. Finally, this study stated some recommendations, one of the most important recommendations don’t use high power in the bleaching process because the tooth will damage.