Intra-pulpal temperature rises in power bleaching

Pulpal response to bleaching of teeth in dogs.

Three different application times of hydrogen peroxide and heat were used to evaluate removal of tetracycline stains from vital teeth of dogs and to evaluate histologic changes in the pulp tissue. Fifteen-, 30-, and 45-min treatments were applied at 2-week intervals for 4 consecutive treatments. The animals were sacrificed at 13, 62, and 92 days following the final bleaching treatment. The pulp...

Influence of simulated pulpal pressure on efficacy of bleaching gels.

AIM The aim of this study was to investigate the Influence of simulated pulpal pressure on efficacy of bleaching gels. MATERIALS AND METHODS Cylindrical enamel-dentin specimens from bovine teeth (3 mm diameter, enamel and dentin layer each 1 mm thick) were divided into 4 groups, according to the bleaching treatment: negative control (non-bleached), bleached with 10% carbamide peroxide (CP), b...

Human pulpal reaction to the modified McInnes bleaching technique.

Thirty-six human teeth were examined to histologically determine if the Modified Mclnnes Bleaching Technique had any adverse effects on the pulp. Under the conditions of this study, there were no significant pulpal reactions to the bleaching technique even when a substantial amount of the enamel was removed from the facial surface of the crowns. J. Craig Baumgartner 4 The Modified McInnes Bleac...

Pulpal temperature changes during low-power hard-tissue CO2 laser procedures.

Thermal insult to pulpal tissue is recognized as a major limitation to the use of lasers for dental hard-tissue procedures. This study examined thermal changes at the level of the dental pulp in human molar teeth irradiated with a CO2 dental laser using a pulsed mode of operation. Sectioned molar teeth were exposed, in vitro, to CO2 laser radiation. The laser parameters were those used clinical...

Temperature Stress and Coral Bleaching