Alkahtany Sarah M, AlHussain Asma A, AlMthen Haifa A, AlDokhi Haya D, Bukhary Sundus M, Almohaimede Amal A, AlNeshmi Basma
Department of Restorative Dental Science, Division of Endodontics, College of Dentistry, King Saud University, PO Box 68004, 11527, Riyadh, Saudi Arabia.
East of Riyadh Dental Center, Riyadh Second Health Cluster, Ministry of Health, Riyadh, Saudi Arabia.
Sci Rep. 2024 Dec 28;14(1):31146. doi: 10.1038/s41598-024-82481-w.
This micro-computed tomography (micro-CT) analysis in vitro study was designed to compare void volume in root canal fillings performed using the single-cone (SC) technique and the continuous wave condensation (CWC) technique with bioceramic (BC) sealer. Forty human-extracted, single-rooted mandibular premolars were cleaned, shaped, and divided into two groups (n = 20) based on the obturation technique. In the first group, obturation was performed using the CWC technique with TotalFill HiFlow BC sealer. In the second group, obturation was performed using the SC technique with the conventional TotalFill BC sealer. All roots were scanned with micro-CT, and ©CTAn software version 1.20.8.0 was used to measure the void volume of each root third in all samples. Despite the different obturation techniques, both groups exhibited voids in filled root canals. The overall mean void volume in the SC group (0.253 ± 0.186) was significantly higher (p = 0.000) than that in the CWC group (0.035 ± 0.043). The difference was significant in the coronal (p = 0.000) and middle (p = 0.017) thirds. The CWC technique with TotalFill HiFlow BC sealer achieved superior obturation quality compared to the SC technique with conventional BC sealer in oval-shaped premolars.
这项体外微计算机断层扫描（micro-CT）分析研究旨在比较使用单锥（SC）技术和连续波加压（CWC）技术并结合生物陶瓷（BC）封闭剂进行根管充填时的空洞体积。选取40颗拔除的人单根下颌前磨牙，进行清理、预备，然后根据充填技术分为两组（n = 20）。第一组使用TotalFill HiFlow BC封闭剂通过CWC技术进行充填。第二组使用传统的TotalFill BC封闭剂通过SC技术进行充填。所有牙根均用micro-CT扫描，并使用CTAn软件版本1.20.8.0测量所有样本中每个牙根三分之一段的空洞体积。尽管充填技术不同，但两组充填后的根管中均存在空洞。SC组的总体平均空洞体积（0.253±0.186）显著高于CWC组（0.035±0.043）（p = 0.000）。在冠部（p = 0.000）和中部（p = 0.017）三分之一段差异显著。在椭圆形前磨牙中，与使用传统BC封闭剂的SC技术相比，使用TotalFill HiFlow BC封闭剂的CWC技术获得了更好的充填质量。
