Miles P G, Pontier J P, Bahiraei D, Close J
University of Pittsburgh, School of Dental Medicine, Pa.
Am J Orthod Dentofacial Orthop. 1994 Oct;106(4):371-5. doi: 10.1016/S0889-5406(94)70058-3.
Recent advances in cosmetic dentistry have led to the development of a variety of new products and techniques including vital bleaching and ceramic brackets. Therefore this study was conducted to see whether the use of an at-home carbamide peroxide bleaching agent before bonding affected the tensile bond strength of a precoated ceramic orthodontic bracket. Sixty extracted human premolar teeth were randomly separated into three groups of 20. Group 1 was a control group that was etched and bonded in the usual manner. Group 2 was immersed in a carbamide peroxide home bleaching agent for 72 hours before pumicing and bonding. Group 3 was also bleached for 72 hours but was immersed in distilled water for 1 week before bonding. The results indicated that recently bleached teeth have significantly reduced bond strength values when compared with both groups 1 and 3. We suggest that if a patient is using a tooth whitening product, that they discontinue its use at least 1 week before the bonding of orthodontic attachments.
美容牙科的最新进展带来了多种新产品和技术的发展，包括活髓漂白和陶瓷托槽。因此，本研究旨在探讨在粘结前使用家用过氧化脲漂白剂是否会影响预涂陶瓷正畸托槽的拉伸粘结强度。60颗拔除的人类前磨牙被随机分为三组，每组20颗。第1组为对照组，采用常规方法进行酸蚀和粘结。第2组在打磨和粘结前，先浸泡在家用过氧化脲漂白剂中72小时。第3组也漂白72小时，但在粘结前先浸泡在蒸馏水中1周。结果表明，与第1组和第3组相比，近期漂白的牙齿粘结强度值显著降低。我们建议，如果患者正在使用牙齿美白产品，在粘结正畸附件前至少停用1周。
