THE EFFECTS OF PEROXIDE BLEACHING ON COMPOSITE TO ENAMEL BOND STRENGTH
THE EFFECTS OF PEROXIDE BLEACHING ON COMPOSITE TO ENAMEL BOND STRENGTH
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DOI：
10.1016/0109-5641(94)90019-1
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发表时间：
1994-01-01
期刊：
影响因子：
5
通讯作者：
BAUGHAN, LW
中科院分区：
文献类型：
--
作者：
DISHMAN, MV;COVEY, DA;BAUGHAN, LW
目标.本体外研究的目的是评估在办公室类型的漂白方案对复合材料与牙釉质结合的影响。对40颗离体人牙的牙釉质进行25%过氧化氢漂白处理。另外10个未漂白样本作为对照（A组）。将40个漂白样本分为四个相等的组（组B-E）。复合圆柱体在漂白后以不同的时间间隔粘合到制备的表面。B组在漂白后即刻、C组在漂白后1 d、D组在漂白后1 wk、E组在漂白后1 mo进行粘接。平均剪切粘结强度值显示B组的粘结强度显著降低。但粘结强度在1 d后恢复正常，并保持正常至少1个月。扫描电镜观察显示，与对照组相比，B组牙釉质/复合材料界面的树脂突数量明显减少。树脂粘合剂的聚合抑制是漂白对粘合强度的影响的可能机制。
Objectives. The objective of this in vitro study was to evaluate the effects of an in-office type of bleaching regimen on the composite to enamel bond.Methods. The enamel on forty extracted human teeth was subjected to a 25% hydrogen peroxide bleaching treatment. Ten additional unbleached specimens served as controls (Group A). The 40 bleached specimens were divided into four equal groups (Groups B-E). Composite cylinders were bonded to the prepared surfaces at various time intervals following bleaching. Group B was bonded immediately, Group C at 1 d, Group D at 1 wk, and Group E at 1 mon post-bleaching.Results. Mean shear bond strength values showed a significant decrease in bond strength for Group B. However, the bond strength returned to normal values after 1 d and remained normal for at least 1 mon. Scanning electron microscope examination showed an apparent decrease in the number of resin tags present in the enamel/composite interface for Group B compared with the other groups including controls.Significance. Polymerization inhibition of the resin bonding agent is the likely mechanism for the effects of the bleaching on bond strength.