Avaliação da sensibilidade dentinária relacionada ao uso de laser infravermelho associado a clareamento dental.

Abstract

Studies show that in patients there are always the desire for smile improvement, which can be obtained with office tooth-whiteningg, but a common complaint in this procedure is dental sensitivity. The objective of this study was to study the dental sensitivity when used a light source associated with office tooth-whiteningg in order to verify the potential of infrared laser in the reduction of sensitivity. To this study, ten volunteers were selected who had the upper arches divided, from the median line, into two groups: the LD composed of the right hemiarcate (tooth 11-14), which received only 35% hydrogen peroxide; the LE composed of the left hemiarcate (tooth 21-24) that received the same hydrogen peroxide 35% followed by infrared laser applied at the end of each session in three cervical points of each tooth of the group; the lower arch formed the LC control group. The sensitivity measurement was done using the Wong-Baker Scale in four moments: immediately after the session; after 12 hours; 24h and 48h of each session. The results showed that in the first session the mean sensitivity of the LE group decreased gradually during the measurements, while in the second session the two groups showed similar behavior. In the comparison between groups at each measurement, p <0.05 was found in both sessions, with no statistically significant differences between the protocols used. It was concluded that the use of infrared laser after each tooth-whiteningg session did not provide a reduction in dental sensitivity.