Analysis of the efficiency of different materials used as cervical barrier in endogenous bleaching

• Published in: RGO - Revista Gaúcha de Odontologia Vol. 56; no. 3; pp. 275 - 279
• Main Authors: Joel de Brito Gonçalves, Key Fabiano Souza Pereira, Gerson Hiroshi Yoshinari, Benícia Carolina Iaskieviscz Ribeiro, Maria Emília de Oliveira Gomes, Maria Salete Machado Candido
• Format: Journal Article
• Language: English
• Published: Faculdade São Leopoldo Mandic 01-01-2008
• Subjects: clareamento de dente; dental esthetics; estética dentária; hydrogen peroxide; peróxido de hidrogênio; tooth bleaching
• ISSN: 0103-6971; 1981-8637

Objective: Evaluate the efficiency of three materials used for making the cervical buffer on the bleaching procedure. Methods: Thirty-six, recently extracted human canines were used, and divided into four experimental groups of nine replicas in each group. Group I was the control group, in which no sealing was done in the cervical region; Group II corresponded to the cervical buffer made by chemically activated glass ionomer cement (Vidrion R); in Group III resin-modified glass ionomer cement (Vitremer, 3M, Sumaré, Brazil) was used as the cervical buffer; and in Group IV Coltosol temporary restorative cement was used. A paste of sodium perborateand 30% hydrogen peroxide was placed in the pulp chamber for seven days, followed by placement of a dye to evaluate microleakageafterwards. Results: The results obtained among the experimental groups were statistically significant. Conclusion: That Coltosol was the most effective material against leakage in the apical direction. Vitremer (3M, Sumaré, Brazil) occupied the intermediate position among the groups, and Vidrion behave better than the control group only, therefore, with precarious sealing properties.