Atmeh Amre R, Alharbi Rakan, Aljamaan Ibrahim, Alahmari Abdulrahman, Shetty Ashwin C, Jamleh Ahmed, Farooq Imran
Hamdan Bin Mohammed College of Dental Medicine (HBMCDM), Mohammed Bin Rashid University of Medicine and Health Sciences (MBRU), Building 14, Dubai Healthcare City, Dubai P.O. Box 505055, United Arab Emirates.
Department of Restorative Dental Sciences, College of Dentistry, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 34212, Saudi Arabia.
Tomography. 2022 Mar 14;8(2):778-788. doi: 10.3390/tomography8020064.
During obturation, air voids are undesirable as they may provide shelter for microorganisms or passage for fluids. This study aimed to compare the occurrence of voids between three calcium silicate-based sealers (CSBSs) (MTA-Fillapex, BioRoot-RCS, Bio-C) and the change in their volume after aging. In addition, we aimed to compare voids when using two sealer application methods: lentulo-spiral (LS) and gutta-percha (GP) cone. Thirty extracted mandibular premolars ( = 30) were endodontically prepared and obturated using single GP cone (SGPC) technique. Each sealer was applied to 10 teeth ( = 10) using LS or GP. Micro-computed tomography (micro-CT) was used to quantify the volume of root filling and voids before and after 8-week storage in a phosphate-rich medium. The percentage of root filling and voids were compared between the groups using a Mann-Whitney U test and Kruskal-Wallis test with a Bonferroni correction. Before aging, the percentages of root filling volume after obturation were comparable with no significant differences between sealers ( = 0.325) or application methods ( = 0.950). After aging, the voids' volume increased significantly in all sealers ( ≤ 0.05). However, no significant differences were found between sealers ( = 0.302). In conclusion, voids in CSBSs may not reduce in size with aging; hence, SGPC should be carefully selected for suitable cases.
在根管充填过程中，气孔是不理想的，因为它们可能为微生物提供庇护所或为液体提供通道。本研究旨在比较三种硅酸钙基封闭剂（CSBSs）（MTA-Fillapex、BioRoot-RCS、Bio-C）之间气孔的发生率及其老化后体积的变化。此外，我们旨在比较使用两种封闭剂应用方法时的气孔情况：螺旋输送器（LS）和牙胶尖（GP）。选取30颗拔除的下颌前磨牙（n = 30）进行根管预备，并采用单牙胶尖（SGPC）技术进行充填。每种封闭剂使用LS或GP方法应用于10颗牙齿（n = 10）。使用微计算机断层扫描（micro-CT）对富含磷酸盐的介质中储存8周前后的根管充填物和气孔体积进行量化。使用Mann-Whitney U检验和Kruskal-Wallis检验以及Bonferroni校正比较各组之间的根管充填物和气孔百分比。老化前，充填后根管充填体积百分比在不同封闭剂之间（P = 0.325）或应用方法之间（P = 0.950）具有可比性，无显著差异。老化后，所有封闭剂中的气孔体积均显著增加（P≤0.05）。然而，不同封闭剂之间未发现显著差异（P = 0.302）。总之，CSBSs中的气孔可能不会随着老化而减小；因此，应根据具体情况谨慎选择SGPC。
