摘要
目的:研究不同浓度的H2O2表面处理对纤维桩与树脂水门汀之间黏结强度的影响。方法:选择2种不同种类的玻璃纤维桩各18支,随机分为6组,A组(对照组)、B组(单纯硅烷化处理)、C组(3%H2O2+硅烷化处理)、D组(10%H2O2+硅烷化处理)、E组(20%H2O2+硅烷化处理)和F组(30%H2O2+硅烷化处理)。将各组纤维桩与树脂水门汀进行黏结,形成圆柱状树脂块,将每个树脂块切割成7个1.0 mm厚的薄片进行推出实验,记录数据并采用SPSS13.0软件包对数据进行统计学分析。测试后的试件置于光学显微镜下,观察其破坏模式。结果:Tenax玻璃纤维桩黏结强度值A1-F1组分别为(22.35±3.43)MPa、(22.75±1.92)MPa、(27.21±3.60)MPa、(32.32±2.19)MPa、(36.15±2.32)MPa和(40.51±2.37)MPa,Macthpost玻璃纤维桩黏结强度值A2-F2组分别为(17.29±3.23)MPa、(17.01±3.18)MPa、(20.48±2.11)MPa、(23.60±2.60)MPa、(27.65±3.77)MPa和(30.52±2.99)MPa。Tenax及Matchpost组中,除了A组和B组无显著差异(P>0.05)外,其余每2组间相比,差异均有显著性(P<0.05)。结论:使用H2O2溶液处理Tenax及Matchpost玻璃纤维桩表面再涂以硅烷偶联剂,可明显提高2种玻璃纤维桩与树脂水门汀之间的黏结强度。30%H2O2溶液处理玻璃纤维桩表面的黏结强度最高,可使其更利于黏结。
PURPOSE： To evaluate the effect of H2O2 on the push-out bond strength between glass fiber posts and the resin cement. METHODS： Eighteen Tenax glass fiber posts and 18 Macthpost glass fiber posts were randomly assigned to 6 groups according to the surface treatments. Group A, no surface treatment （control group）; Group B, treated with silane agent; Group C, treated with 3% H2O2, then with silane agent; Group D, treated withl0% H2O2, then with silane agent; Group E, treated with20 % H2O2, then with silane agent; Group F, treated with 30% H2O2, then with silane agent. The posts were adhered using the resin cement to form cylindrical resin block. Each resin block was sectioned to 7 sections of 1 mm thick. A push-out test was performed on other sections of each post to measure bond strengths. The date was recorded and analyzed with SPSS13.0 software package. The failure modes were examined with stereomicroscope. RESULTS： The bond strengths of Tenax post from A1 to F1 were （22.35±3.43） MPa, （22.75±1.92） MPa, （27.21±3.60） MPa, （32.32±2.19） MPa, （36.15±2.32） MPa and （40.51±2.37） MPa, respectively. The bond strengths of Macthpost post from A2 to F2 were （17.29±3.23） MPa, （17.01±3.18） MPa, （20.48±2.11） MPa, （23.60±2.60） MPa, （27.65±3.77） MPa and （30.52± 2.99） MPa, respectively. No significantly difference （P〉0.05） was found between Group A and Group B, except other groups. CONCLUSIONS： Treatment with H2O2 followed with silane agent can significantly improve the bond strength between Tenax and Macthpost glass fiber posts and resin cement. The group treated with 30% H2O2 has the highest bond strength, and the treatment procedure is more useful to improve the adhesion of the glass fiber post. Supported by Science and Technology Plan Project of Department of Health of Jiangxi Province （20131084）.
出处
《上海口腔医学》
CAS
CSCD
北大核心
2013年第5期508-513,共6页
Shanghai Journal of Stomatology
基金
江西省卫生厅科技计划课题(20131084)~~
