应用micro-CT评价不同封闭技术的根管充填质量

doi:10.19439/j.sjos.2018.04.003

上海口腔医学 ›› 2018, Vol. 27 ›› Issue (4): 349-353.doi: 10.19439/j.sjos.2018.04.003

应用micro-CT评价不同封闭技术的根管充填质量

徐海¹, 仇晓慧², 张光东¹, 章非敏³

1.南京医科大学口腔疾病研究江苏省重点实验室,南京医科大学附属口腔医院牙体牙髓病科,江苏南京 210029;
2.常州市金坛区金城镇卫生院口腔科,江苏常州 213000;
3.南京医科大学口腔疾病研究江苏省重点实验室,南京医科大学附属口腔医院口腔修复科,江苏南京 210029

收稿日期:2017-11-28 修回日期:2018-01-23 出版日期:2018-08-25 发布日期:2018-10-09
通讯作者: 章非敏,E-mail：fmzhang@njmu.edu.cn
作者简介:徐海（1982-）,男,硕士,主治医师,E-mail:xh1982@njmu.edu.cn
基金资助:
国家重点研发计划 (2016YFA0201704/2016YFA0201700); 江苏高校优势学科建设工程资助项目（2014-37）

Evaluation of the filling quality of different root canal obturation techniques using micro-CT

XU hai¹, QIU Xiao-hui², ZHANG Guang-dong¹, ZHANG Fei-min³

1.Department of Conservative Dentistry and Endodontics, Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University; Affiliated Hospital of Stomatology, Nanjing Medical University. Nanjing 210029;
2.Department of Stomatology, Jincheng Town Hospital of Jintan District. Changzhou 213000;
3.Department of Prosthodontics, Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University; Affiliated Hospital of Stomatology, Nanjing Medical University. Nanjing 210029, Jiangsu Province, China

Received:2017-11-28 Revised:2018-01-23 Online:2018-08-25 Published:2018-10-09

摘要/Abstract

摘要： 目的: 利用micro-CT评价不同封闭技术对根管充填质量的影响。方法: 选取单根管上颌前牙40颗,截冠后,使牙根长度为12 mm。利用ProTaper预备至F3,将处理好的样本随机分为4组（n=10）,用牙胶尖和（或）iRoot SP分别使用冷侧压法、热牙胶法、单尖法、纯糊剂法完成充填。1周后,应用micro-CT扫描并测量分析根管内存在的间隙,计算各组存在气泡的横截面比例和充填材料整体、冠1/3、中1/3、尖1/3的体积比,采用SPSS 20.0软件包对数据进行统计学分析。结果: 热牙胶组存在气泡的横截面比例最少(P<0.05);整体、冠1/3、中1/3热牙胶组的充填材料体积比最大(P<0.05),而尖1/3纯糊剂组的充填材料体积比最大（P<0.05）,其他各组间均无显著差异。结论: 所有封闭技术均不能避免气泡产生,热牙胶法充填质量最高。

关键词: iRoot SP, Micro-CT, 充填质量

Abstract: PURPOSE: The aim of this study was to evaluate the quality of different root canal obturation techniques by micro-CT. METHODS: Forty single-canal upper incisors were collected and decoronated to obtain 12 mm root segments. The root canals were prepared by using ProTaper rotary files and allocated into 4 groups randomly（n=10）, then obturated with gutta-percha and(or) iRoot SP by cold lateral compaction (CLC), continuous wave condensation (CWC), single core (SC), sealer-only buckfill (SoB) techniques, respectively. Each tooth was then scanned with micro-CT, and the percentage of 3D volume and 2D slices of voids and gaps were calculated 1 week later. The data were analyzed using SPSS 22.0 software package. RESULTS: Percentage of cross-sections with voids and gaps in CWC group was significantly less than others (P<0.05) , and it had a significantly greater filling area in 3D volume in whole root canal, middle third and coronal third levels (P<0.05), while SOB group had the largest filling quality in apical third levels (P<0.05). CONCLUSIONS: No filling technology can avoid voids. CWC technology provides the best filling performance.

Key words: iRoot SP, Micro-CT, Filling quality

中图分类号:

R781.3

徐海, 仇晓慧, 张光东, 章非敏. 应用micro-CT评价不同封闭技术的根管充填质量[J]. 上海口腔医学, 2018, 27(4): 349-353.

XU hai, QIU Xiao-hui, ZHANG Guang-dong, ZHANG Fei-min. Evaluation of the filling quality of different root canal obturation techniques using micro-CT[J]. Shanghai Journal of Stomatology, 2018, 27(4): 349-353.

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应用micro-CT评价不同封闭技术的根管充填质量

Evaluation of the filling quality of different root canal obturation techniques using micro-CT

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