绿茶提取物作为抗氧化剂对树脂复合材料与办公室和家庭漂白搪瓷剪切结合强度的影响。

Journal of Dental Biomaterial Pub Date : 2016-09-01
Sharafeddin F, Farshad F, Azarian B, Afshari A
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引用次数: 0

摘要

问题说明:家庭和办公室漂白牙釉质的剪切粘结强度(SBS)会因立即应用复合修复而受到损害。抗氧化剂可以克服这个问题。目的:体外研究绿茶提取物对树脂复合材料与办公室和家庭漂白牙釉质剪切结合强度的影响。材料与方法:将取出的40个完整的人门牙嵌入圆柱形丙烯酸树脂块(2.5 ×1.5 cm)中,牙髓牙釉质接点上方的冠状部分伸出块。然后,将20颗牙齿用15%过氧化脲每天6小时漂白唇牙釉质表面,连续5天,根据是否使用抗氧化剂,随机分为A1组和A2组(n = 10)。其余20颗牙齿的唇牙釉质表面用38%的过氧化氢漂白,然后根据是否使用抗氧化剂随机分为B1组和B2组(n = 10)。实验组(A2,B2)先用5%绿茶提取物溶液处理,然后用聚四氟乙烯圆柱模具(5×2 mm)进行树脂复合修复。在Zwick/Roell Z020万能试验机上测试试件的剪切粘结强度。SBS资料分析采用单因素方差分析(One-way ANOVA)和Tukey HSD检验(p < 0.05)。结果:对照组(A1)与治疗组(A2)剪切粘接强度比较,差异无统计学意义,而B1组与B2组比较,差异有统计学意义(p < 0.05)。结论:抗氧剂的应用并不能提高家用漂白牙釉质对树脂复合材料的剪切结合强度,但可提高办公室漂白牙釉质对树脂复合材料的剪切结合强度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Effect of Green Tea Extract as Antioxidant on Shear Bond Strength of Resin Composite to in-Office and Home-Bleached Enamel.

Effect of Green Tea Extract as Antioxidant on Shear Bond Strength of Resin Composite to in-Office and Home-Bleached Enamel.

Effect of Green Tea Extract as Antioxidant on Shear Bond Strength of Resin Composite to in-Office and Home-Bleached Enamel.

Statement of problem: Shear bond strength (SBS) of home and office bleached enamel will be compromised by immediate application of composite restoration. Antioxidant agent may overcome this problem.

Objectives: This in vitro study assessed the effect of green tea extract on shear bond strength of resin composite to in-office and home-bleached enamel.

Materials and methods: In this experimental study, 40 extracted intact human incisors were embedded in cylindrical acrylic resin blocks (2.5 ×1.5 cm), with the coronal portion above the cemento enamel junction out of the block. Then, after bleaching labial enamel surfaces of 20 teeth with 15% carbamide peroxide 6 hours a day for 5 days, they were randomly divided into two groups: A1 and A2 (n = 10), depending upon whether or not they are treated with antioxidant. Labial enamel surfaces of the remaining 20 teeth were bleached with 38% hydrogen peroxide before being randomly divided into groups B1 and B2 (n = 10), again depending on whether or not the antioxidant was used in their treatment . The experimental groups (A2,B2) were treated with 5% solution of green tea extract before resin composite restoration was done by a cylindrical Teflon mould (5×2 mm). Shear bond strength of the specimens was tested under a universal testing machine (Zwick/Roell Z020). The SBS data were analyzed by using One-way ANOVA and Tukey HSD tests (p < 0.05).

Results: There were no statistically significant differences between shear bond strength of the control group (A1) and treated group (A2), but there were statistically significant differences between the groups B1 and B2 (p < 0.05).

Conclusions: Application of antioxidant did not increase the shear bond strength of home-bleached enamel to resin composite but its application increased the shear bond strength of in-office bleached enamel to resin composite.

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