Evaluation of the effect of concentration and duration of application of sodium ascorbate hydrogel on the bond strength of composite resin to bleached enamel.
Evaluation of the effect of concentration and duration of application of sodium ascorbate hydrogel on the bond strength of composite resin to bleached enamel.
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DOI：
10.4103/0972-0707.87197
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发表时间：
2011-10
期刊：
影响因子：
--
通讯作者：
Uppin VM
中科院分区：
文献类型：
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作者：
Dabas D;Patil AC;Uppin VM
评估了不同浓度的抗坏血酸钠水凝胶在不同时间段内对漂白牙釉质粘合强度的影响以及失效模式。从 35 颗人类拔除的前磨牙中获得了 70 个牙釉质表面。标本分为四组：不漂白（对照）、用过氧化脲凝胶漂白、漂白并应用10%/20%抗坏血酸钠水凝胶30、60、120分钟。表面用全蚀刻粘合系统和复合树脂粘合。测试样品的剪切粘合强度。通过立体显微镜确定失效模式。使用双向方差分析和 Scheffe 事后检验对数据进行分析。漂白后应用抗坏血酸钠水凝胶可增加树脂-牙釉质的粘合强度，并与其应用时间成正比。然而，随着抗坏血酸钠水凝胶浓度的增加，粘合强度没有变化。经过抗氧化剂抗坏血酸钠水凝胶处理后，复合树脂可以立即粘合到漂白牙釉质上。
The effect of different concentrations of hydrogel of sodium ascorbate on bond strength of bleached enamel for varying periods of time and the mode of failure was evaluated. Seventy enamel surfaces were obtained from 35 human extracted premolars. Specimens were divided into four groups: no bleaching (control), bleaching with carbamide peroxide gel, bleaching and application of 10% / 20% sodium ascorbate hydrogel for 30, 60, 120 min. Surfaces were bonded with a total etch bonding system and composite resin. Specimens were tested for shear bond strength. Mode of failure was determined by stereomicroscope. Data were analyzed using a two-way analysis of variance, and Scheffe's post hoc test. Sodium ascorbate hydrogel application following bleaching increased the resin-enamel bond strength and was directly proportional to its duration of application. However, there was no difference in bond strength with an increase in the concentration of sodium ascorbate hydrogel. Immediate bonding of composite resin to bleached enamel is possible after treatment with antioxidant sodium ascorbate hydrogel.