Stokes A N, Hood J A, Dhariwal D, Patel K
Department of Restorative Dentistry, University of Otago, School of Dentistry, Dunedin, New Zealand.
Quintessence Int. 1992 Nov;23(11):769-71.
Human third molar teeth were divided into three groups: untreated control; enamel treated with 35% hydrogen peroxide for 2 hours; and enamel treated with 10% carbamide peroxide gel for 14 days. All teeth were ground to present a flat enamel surface, to which cylinders of light-cured composite resin were bonded. Shear bond strengths were determined for each specimen. The mean shear bond strengths of resin-enamel bonds after pretreatment with both 35% hydrogen peroxide and 10% carbamide peroxide were significantly lower than those for untreated controls. External bleaching with these materials prior to resin bonding procedures may reduce the quality of resin-enamel bonds.
未处理的对照组；用35%过氧化氢处理2小时的牙釉质组；以及用10%过氧化脲凝胶处理14天的牙釉质组。所有牙齿均被磨平以呈现平整的牙釉质表面，在该表面上粘结光固化复合树脂圆柱体。测定每个样本的剪切粘结强度。用35%过氧化氢和10%过氧化脲预处理后，树脂与牙釉质粘结的平均剪切粘结强度显著低于未处理的对照组。在进行树脂粘结程序之前用这些材料进行外部漂白可能会降低树脂与牙釉质粘结的质量。
