华西口腔医学杂志2011，Vol.29Issue(4)：361-364,4.DOI:10.3969/j.issn.1000-1182.2011.04.007
第一前磨牙桩道预备后剩余根管壁厚度的研究
Residual dentin thickness in first premolars after root canalpreparation
章蕾 1汲平 2傅新海 3宋晓蕾4
作者信息
- 1. 山东大学口腔医院,修复科
- 2. 山东大学口腔医院山东省口腔生物医学重点实验室,济南,250012
- 3. 金华市中心医院,口腔科,金华,321000
- 4. 山东大学口腔医院,修复科,山东省口腔生物医学重点实验室,济南,250012
- 折叠
摘要
Abstract
Objective The residual dentin thickness of first premolars were measured by anatomical methods before and after post preparation, the data from which can help clinicians to choose proper sizes of peeso drill. Methods 30 first maxillary premolars and 30 first mandibular premolars were collected. Walls of 4 mm short of the apex were respectively measured before and after post preparation with peeso drills number 1-3. Results The measurement results of all indexes assumed a normal distribution. For two-canal first maxillary premolars and single-canal first mandibular premolars, the average residual mesial and distal thickness of root walls 4 mm short of the apex were less than 1 mm after post preparation by number 3 peeso drill. The buccal root had nonsignificant differences(P＞0.05). The palatine root and the first mandibular premolars had significant differences (P＜0.05). For single-canal first maxillary premolars, the average residual mesial and distal thickness were less than 1 mm after post preparation by number 2 peeso drill. The distal wall had significant differences (P＜0.05). Conclusion In post preparation, for the buccal root of two-canal maxillary premolars, the maximum size of peeso drill was number 3, and for the palatine root and first mandibular premolars, the size was number 2, and for single-canal maxillary first premolars, the size was number 1.关键词
第一前磨牙/桩道预备/剩余根管壁厚度Key words
first premolar/ post preparation/ residual dentin thickness分类
医药卫生引用本文复制引用
章蕾,汲平,傅新海,宋晓蕾..第一前磨牙桩道预备后剩余根管壁厚度的研究[J].华西口腔医学杂志,2011,29(4):361-364,4.
