Mokhtari Hadi, Razi Sedigheh, Rahimi Saeed, Haghighat Pouya, Abedi Atefeh, Behrouzpour Elham
Department of Endodontics, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran.
Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz, Iran.
Iran Endod J. 2024;19(3):193-198. doi: 10.22037/iej.v19i3.41837.
Rotary systems have made significant advances to improve their root canal preparation efficacy. These instruments can properly preserve the root canal anatomy and morphology. The present study aimed to compare canal transportation and centering ability of RaCe and Af f-one systems using cone-beam computed tomography.
Thirty-six mandibular molars were included. The samples were randomly assigned to two groups (=18): group 1, RaCe, and group 2, Af f-one. Canal preparation was conducted using the respective files according to the manufacturers' instructions. The cone-beam computed tomographic scanning of the samples was performed before and after preparation. The data were analyzed by using two-way ANOVA.
In both the RaCe and Af f-one rotary systems, canal centrality and transportation were similar at coronal, middle, and apical cross-sections. In addition, canal transportation and centrality were identical in the RaCe and Af f-one rotary files (<0.05).
The two studied rotary systems did not exhibit significant differences in root canal transportation and preservation of root canal centrality in the apical, middle, and coronal thirds.
旋转系统在提高根管预备效果方面取得了显著进展。这些器械能够妥善保留根管的解剖结构和形态。本研究旨在使用锥形束计算机断层扫描比较RaCe系统和Af f-one系统的根管偏移和定心能力。
纳入36颗下颌磨牙。样本随机分为两组（每组 =18）：第1组为RaCe组，第2组为Af f-one组。根据制造商的说明，使用各自的锉进行根管预备。在预备前后对样本进行锥形束计算机断层扫描。数据采用双向方差分析进行分析。
在RaCe和Af f-one旋转系统中，根管在冠部、中部和根尖部横截面的中心度和偏移情况相似。此外，RaCe和Af f-one旋转锉在根管偏移和中心度方面相同（P<0.05）。
所研究的两种旋转系统在根尖、中部和冠部三分之一处的根管偏移和根管中心度保留方面未表现出显著差异。
