Denna Jameela, Shafie Lubna A, Alsofi Loai, Al-Habib Mey, AlShwaimi Emad
Department of Endodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
Faculty of Oral and Dental Medicine, Cairo University affiliated to Faculty of Dentistry, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
Materials (Basel). 2020 May 12;13(10):2222. doi: 10.3390/ma13102222.
This study aims to evaluate the efficacy of the rotary instrument XP-endo Finisher for the removal of Ca(OH) aided by different irrigation regimens.
Sixteen double-rooted upper premolar human teeth were selected for the study. Thirty-two canals were prepared using a ProTaper Next rotary system up to X3. Then, the canals were filled with Ca(OH). The volume of Ca(OH) inside the canals was measured by microcomputed tomography (micro-CT). After that, the teeth were randomly allocated into two experimental groups, i.e., A and B (n = 16 canals). In group A, Ca(OH) was removed using the master apical file (X3). In group B, Ca(OH) was removed using a XP-endo finisher. In half of both groups (n = 8), syringe irrigation (SI) was used, while passive ultrasonic irrigation (PUI) was used for the other half. After removal, the remaining volume of Ca(OH) was measured. All data were statistically analyzed using two-way ANOVA with Tukey's post hoc test.
The percentages of remaining Ca(OH) in the apical thirds of all canals were significantly higher as compared with the middle and coronal thirds in all groups ( < 0.05). There was no significant difference between different files and techniques ( > 0.05).
This study presents a new method for the removal of Ca(OH) from root canals.
本研究旨在评估旋转器械XP-endo Finisher在不同冲洗方案辅助下去除根管内氢氧化钙（Ca(OH)₂）的效果。
选取16颗人上颌双根前磨牙进行研究。使用ProTaper Next旋转系统将32个根管预备至X3。然后，根管内充填Ca(OH)₂。通过显微计算机断层扫描（显微CT）测量根管内Ca(OH)₂的体积。之后，将牙齿随机分为两个实验组，即A组和B组（每组16个根管）。A组使用主尖锉（X3）去除Ca(OH)₂。B组使用XP-endo Finisher去除Ca(OH)₂。两组各一半（n = 8）采用注射器冲洗（SI），另一半采用被动超声冲洗（PUI）。去除后，测量剩余Ca(OH)₂的体积。所有数据采用双向方差分析及Tukey事后检验进行统计学分析。
与所有组的根管中1/3和冠1/3相比，所有根管根尖1/3处剩余Ca(OH)₂的百分比显著更高（P < 0.05）。不同锉具和技术之间无显著差异（P > 0.05）。
本研究提出了一种从根管中去除Ca(OH)₂的新方法。
