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| 洞形与抗剪切能力的关系 | |
| 引用本文： | 刘战义,郑镭,陈洁点,张翼鹏. 洞形与抗剪切能力的关系[J]. 牙体牙髓牙周病学杂志, 2006, 16(8): 454-456 |
| 作者姓名： | 刘战义 郑镭 陈洁点 张翼鹏 |
| 作者单位： | 1. 市第六医院口腔科,北京,100007 2. 加利福尼亚大学,旧金山,美国 |
| 摘 要： | 目的：研究盒型洞两侧的余留牙体组织与底面不同移行方式时抗剪切能力的关系。方法：将新鲜离体牙的一部分制备成符合要求的两组试件。第一组试件的两侧壁轴向加载，第二组试件两侧壁侧向加载，分别记录两侧不同形状侧壁的抗剪切力值。结果：轴向加载，不同形状的侧壁抗剪切力无显著性差异（P〉0.5）；侧向加载，不同形状的侧壁抗剪切力有高度显著性差异（P〈0．00001）。结论：两侧壁受到轴向负载时，其抗剪切能力与洞形无关，受侧向负载时，其抗剪切能力与洞形有密切关系。 |
| 关 键 词： | 环型洞 盒型洞 抗剪切力 |
| 文章编号： | 1005-2593（2006）08-0454-03 |
| 收稿时间： | 2005-11-14 |
| 修稿时间： | 2005-12-27 |
Relationship between the shape of the cavity and bond strength of the dentin |
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| LIU Zhan-yi,ZHENG Lei,CHEN Jie-dian,ZHANG Yi-peng. Relationship between the shape of the cavity and bond strength of the dentin[J]. Chinese Journal of Conservative Dentistry, 2006, 16(8): 454-456 | |
| Authors: | LIU Zhan-yi ZHENG Lei CHEN Jie-dian ZHANG Yi-peng |
| Affiliation: | Department of Stomatology, Beijing Sixth Hospital, Beijing 100007, China |
| Abstract: | AIM:To evaluate the relationship between the shape of cavity and bond strength of the dentin. METHODS: Forty freshly extracted molars were ground flat to expose the dentin and randomly divided into two groups. The specimens were subjected to the tensile and shear bond tests. RESULTS: There were no significant differences of tensile bond strength of the dentin for the first group (P>0.5). On the other hand, there were significant differences of shear bond strengths of the dentin for the second group (P<0.00001).CONCLUSION: The shape of the cavity had a greater influence on the shear bond strength of the dentin than the tensile bond strength of the dentin. |
| Keywords: | ring - shaped cave box - shaped cave anti - sheafing force |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |