CAJ | 학술논문

目的：评估本课题组自主研制的预成弹性印模桩临床制取桩核印模的效果。方法：用预成弹性印模桩法(实验组)和传统方法(对照组)分别对70颗牙体大面积缺损、根管治疗后要求桩核冠修复的单根管患牙各制取桩核印模，观察两种方法制取桩核印模的完整性。结果：实验组和对照组印模桩核区印模缺陷的发生率分别为44.29%、74.29%，两者之间的差异有统计学意义(P<0.01)；实验组和对照组印模缺陷在根尖部的发生率分别为2.96%、41.43%，两者之间的差异有统计学意义(P<0.01)；实验组和对照组印模缺陷在桩体部的发生率分别为4.29%、35.71%，两者之间的差异有统计学意义(P<0.01)；实验组和对照组桩核印模的可用率分别是93.75%、60.00%，实验组的临床可用率显著高于对照组，两者之间的差异有统计学意义(P<0.01)。结论：应用预成弹性印模桩制取桩核印模能够提高印模桩核区的完整性。
목적：평고본과제조자주연제적예성탄성인모장림상제취장핵인모적효과。방법：용예성탄성인모장법(실험조)화전통방법(대조조)분별대70과아체대면적결손、근관치료후요구장핵관수복적단근관환아각제취장핵인모，관찰량충방법제취장핵인모적완정성。결과：실험조화대조조인모장핵구인모결함적발생솔분별위44.29%、74.29%，량자지간적차이유통계학의의(P<0.01)；실험조화대조조인모결함재근첨부적발생솔분별위2.96%、41.43%，량자지간적차이유통계학의의(P<0.01)；실험조화대조조인모결함재장체부적발생솔분별위4.29%、35.71%，량자지간적차이유통계학의의(P<0.01)；실험조화대조조장핵인모적가용솔분별시93.75%、60.00%，실험조적림상가용솔현저고우대조조，량자지간적차이유통계학의의(P<0.01)。결론：응용예성탄성인모장제취장핵인모능구제고인모장핵구적완정성。
Objective:To investigate the application of a proprietary preformed elastomeric post on preparation of post and core impression in clinical practice. Methods:Seventy endodontically treated single-root canal teeth with large defects of tooth structure were enrolled. The method of using the prefabricated elastomeric impression post proprietarily developed by our research group (experimental group) and the traditional method (control group) were used and evaluated on prepara-tion of post and core impression, respectively. Result: The impression defects in experimental and control groups were 44.29%and 74.29%, and the difference was statistically significant (P<0.01). The apical impression defects in experimental and control groups were 2.96%and 41.43%, and the difference was statistically significant (P<0.01). The post body defects in experimental and control groups were 4.29%and 35.71%, and the difference was statistically significant (P<0.01). The available rate in experiment group was significantly higher than the control (93.75%vs 60.00%). Conclusion:The propri-etary prefabricated elastomeric impression post could improve post and core impression integrity during clinical practice.