止血剂对乳牙牙本质黏结强度的影响  

Effect of hemostatic agent on bonding strength of deciduous tooth dentin

作　　者：潘秋华 黄大维 王青泰 

机构地区：[1]厦门市妇幼保健院口腔科,福建厦门361003

出　　处：《上海口腔医学》2017年第2期184-187,共4页Shanghai Journal of Stomatology

摘　　要：目的 :探讨止血剂对乳牙牙本质黏结强度的影响。方法 :选取40颗滞留乳磨牙,构建磨切后牙本质模型,随机分为观察组和对照组,每组20颗实验牙。观察组采用止血剂覆盖30 s后冲洗,然后进行黏结处理,对照组直接进行黏结处理。观察2组微拉伸黏结强度、微渗漏情况。采用SPSS 19.0软件包对数据进行统计学分析。结果:观察组微拉伸黏结强度为(12.84±2.10)MPa,显著低于对照组的(14.03±2.28)MPa(P<0.05);观察组形成的树脂突大部分>35μm,且长而密集,伸入开放的牙本质小管中;对照组形成的树脂突长约7~35μm,侧支交通明显;2组牙本质黏结剂的微渗漏程度比例差异无显著性(P>0.05)。结论:止血剂对乳牙牙本质黏结强度有一定影响,临床应用时应特别注意。PUPPOSE： To investigate the effect of hemostatic agent on bonding strength of deciduous tooth dentin. METHODS： Forty deciduous molars were used to make dentin grinding model and randomly divided into observation group and control group, 20 teeth in each group. Teeth in the observation group were covered with hemostatic agent for 30s, and then washed, followed by processing; while teeth in the control group were subjected to bonding directly. Micro tensile bond strength and micro leakage were measured and compared in the two groups. SPSS19.0 software package was used to analyze the data. RESULTS： Micro tensile bond strength of the observation group was （12.84±2.10） MPa, significantly lower than that of the control group （P〈0.05）; most resin protrusion in the observation group was 〉 35 μm and long and dense, extending into the open dentinal tubules; while resin protrusion in the control group was about 7 to 35 μm, with obvious collateral communication. There was no significant difference in the degree of micro leakage between the two groups （P〉0.05）. CONCIUSIONS： Hemostatic agent has certain impact on the dentin bonding strength of deciduous tooth, special attention should be paid during clinical application.

关 键 词：止血剂 乳牙 牙本质 微拉伸强度 微渗漏 

分 类 号：R783.1[医药卫生—口腔医学]