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In vitro action of various carbamide peroxide gel bleaching agents on the microhardness of human enamel
E C Pinheiro Júnior1, R A Fidel, A M da Cruz Filho
1Disciplina de Endodontia, Faculdade de Odontologia, Universidade do Estado do Rio de Janeiro, Brasil.
Brazilian Dental Journal
|January 1, 1996
Abstract:
The authors verified a decrease in human enamel microhardness after application of the following carbamide peroxide gel bleaching agents for 8 hours daily for 1 week: 10% Nite White, 16% Nite White, Opalescence, Karisma Alpha and Perfect Smile. Statistical analysis showed that these agents caused a decrease in enamel microhardness. Nite White (16%) was the most effective in reducing enamel microhardness and Opalescente the least effective. Nite White (10%), Karisma Alpha and Perfect Smile fell into a statistically intermediate position.