Hajipour Romina, Zare Jahromi Maryam, Khabiri Masood
Dental Research Center, Research Institute of Dental Sciences, Dental School, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Dept. of Endodontics, Faculty of Dentistry, Isfahan (Khorasgan) Branch, Islamic Azad University, Isfahan, Iran.
J Dent (Shiraz). 2025 Mar 1;26(1):48-54. doi: 10.30476/dentjods.2024.99581.2159. eCollection 2025 Mar.
One of the most important stages of root canal treatment is obturation for the root canal, an obturation with less voids will have fewer treatment complications in the future.
This study was conducted to compare the quality of obturation of single-canal maxillary second premolars by the cold lateral compaction (CLC) versus continuous warm vertical condensation (CWVC) techniques using micro-CT.
In this experimental study, 36 extracted single-canal maxillary premolars were selected. The root canals were instrumented by Denco Blue rotary files. The teeth were randomly assigned to three groups (n=12) of control (no root filling), root canal obturation with CLC technique, and root canal obturation with CWVC technique. Next, they underwent micro-CT, and the mean volume and volume percentage (VP) of voids were calculated in the apical, middle, and coronal thirds of the root canals. Data were analyzed using one-way ANOVA, the Kruskal-Wallis, Mann-Whitney U, Bonferroni, Dunnett, Tukey, and independent t-tests ( Value<0.05).
In the coronal third, no significant difference was found between the CLC and CWVC groups in the mean volume of voids (= 0.273), the mean volume of filled space (= 0.419), or the VP of voids (= 0.605). The highest mean volume and VP of voids were recorded in the coronal part of the group CWVC (> 0.05). The lowest mean volume and VP of voids was recorded in the apical third in CWVC group (< 0.05).
None of the obturation techniques could provide a void-free root filling. Two techniques showed no significant difference regarding the mean volume and VP of voids in obturation of single-canal maxillary second premolars.
根管治疗最重要的阶段之一是根管充填，空隙较少的充填在未来会有较少的治疗并发症。
本研究旨在使用显微CT比较冷侧方加压（CLC）与连续热垂直加压（CWVC）技术对上颌单根管第二前磨牙的充填质量。
在本实验研究中，选取36颗拔除的上颌单根管前磨牙。根管采用Denco Blue旋转锉进行预备。牙齿随机分为三组（n = 12）：对照组（未进行根管充填）、采用CLC技术进行根管充填组、采用CWVC技术进行根管充填组。接下来，对它们进行显微CT扫描，并计算根管根尖、中部和冠部三分之一处空隙的平均体积和体积百分比（VP）。数据采用单因素方差分析、Kruskal-Wallis检验、Mann-Whitney U检验以及Bonferroni检验、Dunnett检验、Tukey检验和独立t检验进行分析（P值<0.05）。
在冠部三分之一处，CLC组和CWVC组在空隙平均体积（P = 0.273）、充填空间平均体积（P = 0.419）或空隙VP（P = 0.605）方面均未发现显著差异。CWVC组冠部空隙的平均体积和VP最高（P>0.05）。CWVC组根尖三分之一处空隙的平均体积和VP最低（P<0.05）。
两种充填技术均无法实现无空隙的根管充填。在单根管上颌第二前磨牙的充填中，两种技术在空隙平均体积和VP方面无显著差异。
