中国美容医学2016，Vol.25Issue(9)：58-61,4.
两种镍钛器械预备后牙根管抗折强度的对比研究
The resistance to fracture of tooth after root canal preparation with two different rotary nickel-titanium systems
臧艳君 1王佳 1周磊 1王香兰1
作者信息
- 1. 青岛市口腔医院牙体科 山东 青岛 266001
- 折叠
摘要
Abstract
s: Objective Comparison of 2 root canal preparation system ProTaper and TFA root canal preparation before the root canal preparation, analysis of root canal preparation and taper on the root fracture resistance.Methods Sixty pairs of maxillary and mandibullar premolars were selected which extracted from orthodontic. The teeth were non-carious and intact and were randomly divided into four groups. One of each pair was an experiment,the other was used as the control . which instrumented with nickel titanium ifles, namely A group: ProTaper\ TFA,B group: TFA\Complete teeth, C group: ProTaper\Complete teeth, D group:ProTaperF3\ ProTaperF1. Then the samples were tested after root canal filling with Universal Testing Machine. T tests was used to compare the results.Results Fracture resistance of A group of ProTaper in preparation of the premolar was signiifcantly lower than that in the preparation of TFA, B group and C group root canal preparation premolar fracture resistance was signiifcantly lower than that of intact teeth and group D ProTaper prepared to F3 fracture resistance was signiifcantly lower than the ProTaper prepared to F1.Conclusion The fracture resistance of premolar teeth reduced after root canal preparation. Taper on the root canal preparation of the impact of the impact of the taper,the greater the taper, the lower the fracture resistance.关键词
TFA/ProTaper/根管预备/抗折强度/前磨牙Key words
TFA/ProTaper/root canal preparation/resistance to fracture/premolar分类
医药卫生引用本文复制引用
臧艳君,王佳,周磊,王香兰..两种镍钛器械预备后牙根管抗折强度的对比研究[J].中国美容医学,2016,25(9):58-61,4.
