口腔疾病防治2016，Vol.24Issue(9)：515-518,4.DOI:10.12016/j.issn.2096-1456.2016.09.004
纤维桩桩道预备时机对根尖微渗漏影响的体外对比研究
An in vitro comparative study on the effect of different timing of post space preparation on apical microleak-age of fiber posts
摘要
Abstract
Objective To compare the effect of different timing of post space preparation on apical microleakage of fiber posts. Methods A sample of 30 human mandibular first premolars with single root canal was collected. They were prepared with Protaper system by the crown⁃down technique and obturated with gutta⁃percha+AH⁃plus by warm vertical condensation technique. The teeth were randomly assigned to three groups (n=10/group). Group A, immediate post space preparation. Group B, delayed post space preparation after two days. Group C, delayed post space prepara⁃tion after seven days. All the specimens were dyed with India ink and transparented, and then the apical permeated lengths were measured under microscope. And t test statistical analysis were conducted. Results The mean apical permeated lengths of the three groups were all slight, and were (0.96 ± 0.15) mm in group A, (0.97 ± 0.11) mm in group B, (1.01 ± 0.12) mm in group C, respectively. There was no significant difference between the two groups (P>0.05). Conclusion Different timing of post space preparation caused no significant differences on apical microleakage of fiber posts.关键词
桩道预备/微渗漏/热牙胶垂直加压充填技术/透明牙/体外研究Key words
Post space preparation/Microleakage/Warm vertical condensation technique/Transparent tooth/In vitro study分类
医药卫生引用本文复制引用
杜瑞钿,刘森庆,耿发云,李红文,傅云婷,王晓彦..纤维桩桩道预备时机对根尖微渗漏影响的体外对比研究[J].口腔疾病防治,2016,24(9):515-518,4.基金项目
深圳市科技计划项目（201303216）；深圳市龙岗区科技创新局项目（YS2013064）；深圳市重点实验室项目 （）
