临床口腔医学杂志2017，Vol.33Issue(5)：294-296,3.DOI:10.3969/j.issn.1003-1634.2017.05.013
旁路通过术对根尖孔表面形态影响的研究
Influences of bypassing fractured instrument on apical surface morphology
徐蓉蓉 1杨亚萍 1王文梅1
作者信息
- 1. 南京大学医学院附属口腔医院,南京市口腔医院 江苏 南京 210008
- 折叠
摘要
Abstract
Objective:To evaluate the morphological changes of apical surface after performing bypass fractured instrument on root canal prepared teeth.Methods:Collecting two groups of teeth with 25#(n=13)and 15#(n=16)nickel-titanium instruments fractured in root canals,and the bypassing fractured instruments were performed.Also,15 teeth without instruments fractured were set as control group.The apical surfaces of all teeth were examined under SEM and dissecting microscope to observe their morphological changes.Results:The apical foramen diversifications such as dentin defects and crackles were observed in some samples.For the group with 25# nickel-titanium instruments fractured,the damage of apical surface by performing bypass fractured instrument was the severest,with damaging rate reaching 69.2%,significantly higher than the other two groups.Conclusion:Treatment of bypassing fractured instrument can damage the apical surfaces of teeth with significantly higher rate.关键词
旁路通过术/根尖孔表面/镍钛器械Key words
Bypass fractured instrument/Root apical surface/Nickel-titanium instrument分类
医药卫生引用本文复制引用
徐蓉蓉,杨亚萍,王文梅..旁路通过术对根尖孔表面形态影响的研究[J].临床口腔医学杂志,2017,33(5):294-296,3.
