上海口腔医学 ›› 2013, Vol. 22 ›› Issue (6): 659-661.

• 基础研究 • 上一篇    下一篇

2种储存温度对牙本质黏结剂黏结强度的影响

张晓,王庆,薛苗苗,刘一凡   

  1. (郑州大学第四附属医院 修复科,河南 郑州 450052)
  • 收稿日期:2013-03-18 修回日期:2013-04-26 出版日期:2013-04-12 发布日期:2013-04-12
  • 通讯作者: 张晓,Tel:0371-66993400,E-mail:zhangxiaoxiao67@126.com
  • 作者简介:张晓(1967-),女,硕士,副教授

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

ZHANG Xiao, WANG Qing, XUE Miao-miao, LIU Yi-fan   

  1. Department of Prosthodontics, the Fourth Affiliated Hospital, Zhengzhou University. Zhengzhou 450052, Henan Province, China
  • Received:2013-03-18 Revised:2013-04-26 Online:2013-04-12 Published:2013-04-12

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、B 2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25℃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1 mm/min速度测试剪切力,采用SPSS 18.0软件包对数据进行单因素方差分析和LSD t检验。结果:分别对A、B 2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LSD t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。

关键词: 牙本质黏结剂 , 储存温度, 黏结强度

Abstract: 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℃ 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(P<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.

Key words: Dentin adhesive agent, Storage temperature, Bonding strength

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