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抗坏血酸、乙醇和丙酮对处理后的纤维桩与复合树脂核之间粘结的影响。

Effect of ascorbic acid, ethanol and acetone on adhesion between the treated fiber posts and composite resin cores.

机构信息

Member of Dental Research Center, Department of Operative Dentistry, Dental School, Hamadan University of Medical Sciences, Hamadan, Iran.

出版信息

J Adv Prosthodont. 2012 Nov;4(4):187-91. doi: 10.4047/jap.2012.4.4.187. Epub 2012 Nov 29.

DOI:10.4047/jap.2012.4.4.187
PMID:23236569
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3517955/
Abstract

PURPOSE

The aim of the present study was to assess the effect of ascorbic acid, ethanol and acetone on microtensile bond strength between fiber posts pre-treated with hydrogen peroxide and composite resin cores.

MATERIALS AND METHODS

Twenty four fiber posts were pre-treated with 24% hydrogen peroxide and divided into 4 groups as follows: G1: no treatment, as control group; G2: treatment with 10% ascorbic acid solution for 5 minutes; G3: treatment with 70% ethanol solution for 5 minutes; and G4: treatment with 70% acetone solution for 5 minutes. Each fiber post was surrounded by a cylinder-shaped polyglass matrix which was subsequently filled with composite resin. Two sections from each sample were selected for microtensile test at a crosshead with speed of 0.5 mm/min. Statistical analyses were performed using one-way ANOVA and a post hoc Tukey HSD test. Fractured surfaces were observed under a stereomicroscope at ×20 magnification. The fractured surfaces of the specimens were observed and evaluated under a SEM.

RESULTS

MEANS OF MICROTENSILE BOND STRENGTH VALUES (MPA) AND STANDARD DEVIATIONS IN THE GROUPS WERE AS FOLLOWS: G1: 9.70±0.81; G2: 12.62±1.80; G3: 16.60±1.93; and G4: 21.24±1.95. G4 and G1 had the highest and the lowest bond strength values, respectively. A greater bond strength value was seen in G3 compared to G2. There were significant differences between all the groups (P<.001). All the failures were of the adhesive mode.

CONCLUSION

Application of antioxidant agents may increase microtensile bond strength between fiber posts treated with hydrogen peroxide and composite cores. Acetone increased bond strength more than ascorbic acid and ethanol.

摘要

目的

本研究旨在评估抗坏血酸、乙醇和丙酮对经过氧化氢预处理的纤维桩与复合树脂核之间微拉伸粘结强度的影响。

材料与方法

将 24 个纤维桩用 24%过氧化氢预处理，并分为 4 组：G1：无处理，作为对照组；G2：用 10%抗坏血酸溶液处理 5 分钟；G3：用 70%乙醇溶液处理 5 分钟；G4：用 70%丙酮溶液处理 5 分钟。每个纤维桩周围都有一个圆柱形的聚玻璃基质，随后用复合树脂填充。从每个样本中选择两个部分进行微拉伸测试，十字头速度为 0.5mm/min。采用单因素方差分析和事后 Tukey HSD 检验进行统计学分析。使用立体显微镜在 ×20 放大倍数下观察断裂面。使用 SEM 观察和评估试件的断裂面。

结果

各组微拉伸粘结强度值（MPA）的平均值和标准差如下：G1：9.70±0.81；G2：12.62±1.80；G3：16.60±1.93；G4：21.24±1.95。G4 和 G1 的粘结强度值最高和最低。G3 与 G2 相比，粘结强度值更高。所有组之间均有显著差异（P<.001）。所有的失效模式均为黏结性失效。

结论

抗氧化剂的应用可能会增加经过氧化氢处理的纤维桩与复合核之间的微拉伸粘结强度。与抗坏血酸和乙醇相比，丙酮能更有效地提高粘结强度。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7591/3517955/2d9dec6304b3/jap-4-187-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7591/3517955/0d2a7f0ed737/jap-4-187-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7591/3517955/90f020a21ec9/jap-4-187-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7591/3517955/f53eff97fd77/jap-4-187-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7591/3517955/2d9dec6304b3/jap-4-187-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7591/3517955/0d2a7f0ed737/jap-4-187-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7591/3517955/90f020a21ec9/jap-4-187-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7591/3517955/f53eff97fd77/jap-4-187-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7591/3517955/2d9dec6304b3/jap-4-187-g004.jpg

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