2种储存温度对牙本质黏结剂黏结强度的影响  

Effect of bonding strength of dentin adhesive agent under 2 kinds of storage temperatures

作　　者：张晓[1] 王庆[1] 薛苗苗[1] 刘一凡[1] 

机构地区：[1]郑州大学第四附属医院修复科.河南郑州450052

出　　处：《上海口腔医学》2013年第6期659-661,共3页Shanghai Journal of Stomatology

摘　　要：目的：研究不同储存温度对牙本质黏结剂黏结强度的影响。方法：将100颗离体牙随机分为10组，每组10颗，再随机将每组10颗牙分A、B2组．每组5颗。第1周黏结时，黏结剂未做温度差别处理，从第2周开始．每组的A组为4℃冷藏黏结剂处理组，B组为25cC室温存储黏结剂处理组。在10周内分别对离体牙进行树脂黏结处理．制成试件．用万能材料测试仪以1mngmin速度测试剪切力．采用SPSS18．0软件包对数据进行单因素方差分析和LSDt检验。结果：分别对A、B2个实验组的剪切力值进行单因素方差分析，差异有显著性（P〈0．05）。进一步采用LsDt检验进行组间比较．结果显示，前5周差异均无显著性，第6～10周，差异均有显著性。结论：随着时间的延长，冷藏组与室温组的牙本质黏结剂的黏结强度呈下降趋势．从第6周开始．冷藏组与室温组的牙本质黏结剂的黏结强度的差异逐渐明显。PURPOSE： To measure the changes of bonding strength of dentin adhesive agent at different storage temperatures. METHODS： One hundred extracted bicuspids were randomly divided into 10 sets, 10 teeth in each set. Each set was further divided randomly into Group A and Group B, each with 5 teeth. During a 10-week test period, Groups A and B were applied with adhesives labeled A and B. Group A was refrigerated under 4~C and B was stored at room-temperature from the second week on. The first set was stored at the same situation. The shear force of samples were tested by universal material tester at the speed of 1 mm/min. The results were evaluated using one-way ANOVA and LSD t test using SPSS 18.0 software package. RESULTS： According to one-way ANOVA, the shear bond strength of the 2 groups differed significantly （/~〈0.05）. Comparing the sets by LSD t test, the results showed that during the first 5 weeks, there was no significant difference between Group A and B. However, there were measurable differences in performance after 6 weeks. CONCLUSIONS： With time goes on, the bonding strength of both refrigerated and room-temperature adhesives tend to diminish. After 6 weeks, the bonding performance of the 2 groups begins to differ significantly, and the refrigerated adhesives are superior to room-temperature adhesives.

关 键 词：牙本质黏结剂 储存温度 黏结强度 

分 类 号：R783.1[医药卫生—口腔医学]