Faculty of Dentistry, Department of Prosthodontics, Ankara University, Besevler, Ankara, Turkey.
Acta Odontol Scand. 2013 May-Jul;71(3-4):488-97. doi: 10.3109/00016357.2012.696691. Epub 2012 Jul 2.
The aim of this in vitro study was to evaluate the surface roughness of human enamel bleached with 10% carbamide peroxide or 10% hydrogen peroxide bleaching agents at different times and also subjected to different superficial cleaning treatments.
One hundred and forty flat enamel samples were divided into 14 groups, Group 1-Group 14 (G1-G14). G1-G7 were treated with 10% carbamide peroxide and different dentifrices, G8-G14 were treated with 10% hydrogen peroxide and different dentifrices (G1 and G8: not brushed as control groups; G2 and G9: brushed with Ipana® toothpaste; G3 and G10: brushed with Clinomyn® toothpaste; G4 and G11: brushed with Moos Dent® toothpaste; G5 and G12: brushed with Signal® toothpaste; G6 and G13: brushed with Colgate® toothpaste; G7 and G14: brushed without dentifrice). A profilometer was used to measure average roughness values of the initial surface roughness and at each 7-day-interval. The bleaching was performed for 6 h a day and the surface cleaning treatment was performed 3-times a day, 2 min each time, for 4 weeks. The samples were stored in distilled water during the test period.
Statistical analysis revealed significant differences in surface roughness values over time for all groups except G1 and G8 (not brushed). The results of the surface roughness of all groups were nearly the same.
The bleaching with 10% hydrogen peroxide and 10% carbamide peroxide did not alter the enamel surface roughness, but when the bleaching treatment was performed combined with abrasive dentifrices, a significant increase in roughness values was observed.
本体外研究旨在评估用 10%过氧脲或 10%过氧化氢漂白剂漂白人牙釉质后不同时间的表面粗糙度,以及不同表面清洁处理后的表面粗糙度。
将 140 个平面牙釉质样本分为 14 组,即第 1 组至第 14 组(G1-G14)。G1-G7 用 10%过氧脲和不同牙膏处理,G8-G14 用 10%过氧化氢和不同牙膏处理(G1 和 G8:不刷牙作为对照组;G2 和 G9:用 Ipana®牙膏刷牙;G3 和 G10:用 Clinomyn®牙膏刷牙;G4 和 G11:用 Moos Dent®牙膏刷牙;G5 和 G12:用 Signal®牙膏刷牙;G6 和 G13:用 Colgate®牙膏刷牙;G7 和 G14:不用牙膏刷牙)。使用轮廓仪测量初始表面粗糙度和每 7 天间隔的平均粗糙度值。每天漂白 6 小时,表面清洁处理每天进行 3 次,每次 2 分钟,持续 4 周。在测试期间,样本被储存在蒸馏水中。
除 G1 和 G8(未刷牙)外,所有组的表面粗糙度值随时间均有显著差异。所有组的表面粗糙度结果几乎相同。
用 10%过氧化氢和 10%过氧脲漂白不会改变牙釉质表面粗糙度,但当漂白处理与研磨性牙膏联合使用时,粗糙度值会显著增加。