Rosa Amanda Freitas da, Chaves Dayana Mara Silva, Dias-Junior Luiz Carlos de Lima, Ghidini Gabriela Pasqualin, Savaris Julia Menezes, Silva Rayssa Sabino da, Pereira Roberta Pinto, Bortoluzzi Eduardo Antunes, Teixeira Cleonice da Silveira, Garcia Lucas da Fonseca Roberti
Universidade Federal de Santa Catarina - UFSC, Health Sciences Centre, Department of Dentistry, Endodontics Division, Florianópolis, SC, Brazil.
Universidade Estadual de Campinas - Unicamp, Piracicaba School of Dentistry, Department of Restorative Dentistry, Piracicaba, SP, Brazil.
Braz Oral Res. 2025 Apr 4;39:e034. doi: 10.1590/1807-3107bor-2025.vol39.034. eCollection 2025.
Ultrasonic activation of the endodontic sealer makes it difficult to remove the material during endodontic reintervention. Therefore, supplementary removal protocols should be tested to optimize the removal of the remaining filling material. This study assessed the effectiveness of supplementary protocols for filling material removal after sealer ultrasonic activation (UA). Sixty teeth were prepared and distributed into two groups: UA and No UA of the sealer before obturation. Teeth were re-instrumented and two supplementary removal protocols were tested, resulting in six groups (n = 10): NoUA; NoUA+XP (XP-endo Finisher); NoUA+CS (Clearsonic-R1); UA; UA+XP; and UA+CS. Root canals were analyzed under stereomicroscopy and scanning electron microscopy for quantification of the remaining filling material. Considering the total root canal area, the NoUA+CS group had the lowest remaining filling material compared to NoUA+XP, UA+XP and UA+CS groups (p < 0.05). When the root thirds were compared, there was no statistical difference among groups (p > 0.05). The XP-endo Finisher instrument demonstrated the lowest effectiveness when used as a supplementary step. In contrast, the Clearsonic-R1 insert exhibited the highest performance.
牙髓封闭剂的超声激活使得在牙髓再治疗期间难以去除该材料。因此，应测试补充去除方案以优化剩余充填材料的去除。本研究评估了密封剂超声激活（UA）后补充方案对充填材料去除的有效性。制备60颗牙齿并分为两组：充填前密封剂进行UA组和未进行UA组。对牙齿进行再器械操作，并测试两种补充去除方案，从而形成六组（n = 10）：未进行UA组；未进行UA + XP组（XP - 牙髓修整器）；未进行UA + CS组（Clearsonic - R1）；UA组；UA + XP组；以及UA + CS组。在体视显微镜和扫描电子显微镜下分析根管，以量化剩余的充填材料。考虑到根管总面积，与未进行UA + XP组、UA + XP组和UA + CS组相比，未进行UA + CS组的剩余充填材料最少（p < 0.05）。当比较根管的三个部分时，各组之间无统计学差异（p > 0.05）。XP - 牙髓修整器作为补充步骤使用时效果最低。相比之下，Clearsonic - R1插入件表现出最高的性能。
