Akhavan Ali, Hasheminia Seyed Mohsen, Kheradyar Azadeh, Haghpanah Hanieh, Kashani Melika Sadat Araghbidi, Iranmanesh Pedram
Department of Endodontics, Dental Research Center, Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran.
Department of Endodontics, Dental Materials Research Center Dental Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran.
Dent Res J (Isfahan). 2025 May 22;22:22. doi: 10.4103/drj.drj_526_24. eCollection 2025.
Minimizing apical debris extrusion may help reduce postoperative pain, flare-ups and enhance the patient's comfort. This study aimed to compare the apical debris extrusion weights of two rotary file systems, Denco Gold and Denco Blue, with those of hand files.
In this study, 69 mandibular first molars with a curvature < 10° and two separate root canals and foramen in the mesial root were selected. The samples were randomly divided into three groups: Denco Blue rotary file, Denco Gold rotary file, and hand files. After instrumentation, the extruded apical debris was gathered in glass containers and dehumidified. The weight of the debris was measured and compared. Data analysis was conducted using SPSS 22 with one-way analysis of variance and Tukey tests.
The highest mean (standard deviation) of debris extrusion weight was observed with hand files at 0.21 (0.03), followed by the Denco Gold rotary file at 0.10 (0.31), and the lowest with the Denco Blue rotary file at 0.08 (0.27). There was a significant difference ( < 0.001) between the rotary files and hand files, but no significant difference among the rotary files ( > 0.159).
Both Denco Blue and Denco Gold rotary files resulted in less apical debris extrusion compared to hand files, with the two rotary file systems showing similar levels of debris extrusion.
尽量减少根尖碎屑挤出可能有助于减轻术后疼痛、炎症发作并提高患者舒适度。本研究旨在比较两种旋转锉系统（登科金和登科蓝）与手动锉的根尖碎屑挤出重量。
在本研究中，选择了69颗下颌第一磨牙，其弯曲度<10°，近中根有两个独立的根管和根尖孔。样本随机分为三组：登科蓝旋转锉、登科金旋转锉和手动锉。器械操作后，将挤出的根尖碎屑收集在玻璃容器中并除湿。测量并比较碎屑的重量。使用SPSS 22进行数据分析，采用单因素方差分析和Tukey检验。
手动锉的碎屑挤出重量平均（标准差）最高，为0.21（0.03），其次是登科金旋转锉，为0.10（0.31），登科蓝旋转锉最低，为0.08（0.27）。旋转锉和手动锉之间存在显著差异（<0.001），但旋转锉之间无显著差异（>0.159）。
与手动锉相比，登科蓝和登科金旋转锉导致的根尖碎屑挤出均较少，两种旋转锉系统的碎屑挤出水平相似。
