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The Determination Of The Effect Of Various Types Of Sodium Perborate On Bond Strength Of Composite Using Microtensile Test Technique
(Istanbul Univ Press, Istanbul Univ Rectorate, 2005) Ari, Hale; Eldeniz, Ayce U.; Erdemir, Ali
The aim of this in-vitro study was to evaluate bond strength of composite resin after intracoronal bleaching treatment with different types of sodium perborate (SP) mixed with water or hydrogen peroxide using a microtensile bond strength test. Eighty human upper central incisor teeth extracted for periodontal reasons were used. Following obturation, the teeth were randomly divided into eight groups including 10 teeth each. Bleaching agents were then placed in the pulp chamber as follows; Group 1: SP monohydrate (MH) + water, Group 2: SP trihydrate (TRH) + water, Group 3: SP tetrahydrate (TH) + water, Group 4: SP-MH + hydrogen peroxide (HP), Group 5: SP-TRH + HP, Group 6: SP-TH + HP, Group 7: water, Group 8: HP. Access cavities were then sealed with Cavil. The bleaching materials were then replaced at 3 day intervals. After 7 day bleach the crowns were cut vertically from mesial to distal and the labial pulp chamber dentine was prepared for bonding