Só Gabriel Barcelos, Villa Natália, Pereira Jefferson Ricardo, Kuga Milton Carlos, Duarte Marco Antônio Húngaro, da Rosa Ricardo Abreu, Só Marcus Vinicius Reis
Department of Conservative Dentistry, School of Dentistry, Federal University of Rio Grande do Sul - UFRGS, Porto Alegre, Brazil.
Department of Prosthodontics, Unisul - Universidade do Sul de Santa Catarina, Tubarão, SC, Brazil.
J Conserv Dent Endod. 2025 Sep;28(9):899-904. doi: 10.4103/JCDE.JCDE_91_25. Epub 2025 Sep 5.
The removal of intracanal medicament is necessary to promote adequate sealing.
This study evaluated three techniques (conventional irrigation, Ultrasonic activation, and XP-endo Finisher) to remove intracanal medication (Ultracal XS and Bio-C Temp) using micro-computed tomography.
The roots were randomly divided into six groups ( = 10) according to the intracanal medication and the irrigation protocol employed to remove the pastes: Ultracal and Manual (UC/M); Ultracal and XP-endo Finisher (UC/XP); Ultracal and Ultrasonic activation (UC/US); Bio-C Temp and Manual (BIO/M); Bio-C Temp and XP-endo Finisher (BIO/XP) and Bio-C Temp and Ultrasonic activation (BIO/US) The samples were then subjected to microcomputed tomography scan to assess the total volume of filling and remaining medication after removal protocol.
The Shapiro-Wilk normality test indicated a normal distribution of the data. Then, to compare the groups, one-way ANOVA and Tukey's tests were performed. For all statistical tests used, the significance level established was 5%.
When the samples were evaluated after applying the protocols regarding the root canal thirds, there was a greater remaining volume of Bio C Temp in the cervical third compared to the middle and apical thirds in the Bio C Temp/M and Bio C Temp/XP groups ( < 0.05). Ultrasonic activation removed the volume of Bio C Temp from the cervical third to similar levels of the middle and apical thirds ( > 0.05). In the cervical third, the Bio C Temp/XP, Bio C Temp/M group obtained a greater volume of remaining material than Bio C Temp/US, Ultracal/M, Ultracal/XP, and Ultracal/US ( < 0.05).
In the present study, the activation methods of intracanal medications did not differ in the removal capacity between the two types of root canal dressing and none of the removal protocols were able to completely remove dressings from the root canal.
去除根管内药物对于促进良好的封闭是必要的。
本研究使用微型计算机断层扫描评估三种技术（传统冲洗、超声激活和XP-endo Finisher）去除根管内药物（Ultracal XS和Bio-C Temp）的效果。
根据根管内药物和用于去除糊剂的冲洗方案，将牙根随机分为六组（每组n = 10）：Ultracal和手动冲洗（UC/M）；Ultracal和XP-endo Finisher（UC/XP）；Ultracal和超声激活（UC/US）；Bio-C Temp和手动冲洗（BIO/M）；Bio-C Temp和XP-endo Finisher（BIO/XP）以及Bio-C Temp和超声激活（BIO/US）。然后对样本进行微型计算机断层扫描，以评估去除方案后充填的总体积和残留药物。
Shapiro-Wilk正态性检验表明数据呈正态分布。然后，为比较各组，进行了单因素方差分析和Tukey检验。对于所有使用的统计检验，设定的显著性水平为5%。
在应用根管三分法的方案后评估样本时，与Bio C Temp/M和Bio C Temp/XP组的中部和根尖三分之一相比，Bio C Temp在颈段三分之一的残留量更大（P < 0.05）。超声激活将Bio C Temp从颈段三分之一去除至与中部和根尖三分之一相似的水平（P > 0.05）。在颈段三分之一，Bio C Temp/XP、Bio C Temp/M组比Bio C Temp/US、Ultracal/M、Ultracal/XP和Ultracal/US组获得了更大体积的残留材料（P < 0.05）。
在本研究中，两种类型的根管敷料在根管内药物激活方法的去除能力上没有差异，并且没有一种去除方案能够完全从根管中去除敷料。
