Faculdade Sao Leopoldo Mandíc, Instituto de Pesquisas Sao Leopoldo Mandic, Campiñas, Brazil.
University of Sao Paulo, Bauru Dental School, Department of Dentistry, Endodontics and Dental Materials, Bauru, Brazil.
Acta Odontol Latinoam. 2024 Apr;37(1):34-39. doi: 10.54589/aol.37/1/34.
The remaining filling material after retreatment can harbor bacteria and organic tissues that can influence the outcome of the therapy.
The aim of this study was to evalúate, by micro-CT, the amount of filling material remaining in the root canal after its removal using WaveOne Gold or ProDesign RT.
Forty human mandibular canines were instrumented with the ProTaper Next system up to the X2 instrument (25.06) and filled with gutta-percha cones and AHPlus. Teeth were divided into 2 groups (n=20): WaveOne Gold 25.07 (WOG) and ProDesign RT 25.08 (PRT) for filling removal, after which they were scanned in a micro-CT device to quantify the volume of remaining filling material. The data were subjected to log transformation, Student 's t-test was performed to account for multiple observationsper sample, significance was set at 5%.
Student 's t-test showed that there was no difference between the two systems regarding the volume of remaining filling material in the thirds: apical (p = 0.392), middle (p = 0.065), or cervical (p = 0.918).
CONCLUSIÓN: Remaining filling material was present in all groups and both systems were similar in removing root filling material in mandibular canines.
再治疗后残留的填充物可能藏匿细菌和有机组织，这可能会影响治疗效果。
本研究旨在通过 micro-CT 评估使用 Gold 或 ProDesign RT 移除根管内填充物后，根管内剩余填充物的量。
40 颗下颌恒前磨牙用 ProTaper Next 系统根管预备至 X2 器械（25.06），用牙胶尖和 AHPlus 填充。将牙齿分为两组（n=20）：WaveOne Gold 25.07（WOG）和 ProDesign RT 25.08（PRT）用于去除填充物，然后用 micro-CT 设备扫描以定量测量剩余填充物的体积。数据进行对数转换，使用 Student 't 检验考虑每个样本的多个观察值，显著性水平设为 5%。
Student 't 检验显示，两种系统在根尖（p=0.392）、中部（p=0.065）或颈部（p=0.918）的剩余填充物体积方面无差异。
所有组中都存在残留的填充物，两种系统在去除下颌恒前磨牙根管内填充物方面相似。
