Pooja R Patil, Nirupama D N, Mohan Nainan Thomas, Vijay R, Thomas Helen, Sneha P K
Department of Conservative Dentistry and Endodontics, Vydehi Institute of Dental Sciences and Research Centre, Bengaluru, Karnataka, India.
J Conserv Dent Endod. 2025 Jul;28(7):642-646. doi: 10.4103/JCDE.JCDE_211_25. Epub 2025 Jul 2.
Different levels of residual moisture in the root canal have shown to affect the sealing properties of resin-based and calcium silicate based sealers.
This study was aimed to compare the effect of different root canal drying techniques on the push-out bond strength (PBS) of AH Plus and Ceraseal sealer.
Sixty-four single rooted premolars were decoronated and subjected to biomechanical preparation with a ProTaper Gold rotary file up to size F2 and were divided into two groups based on the type of sealer used: Group A: AH Plus, and Group B: Ceraseal. Each group was further subdivided into four subgroups based on the different drying techniques using paper point, ethanol, air vacuum, and control. Samples were obturated and were tested for PBS using the universal testing machine.
The data were statistically evaluated using the one-way ANOVA test and Tukey's test.
The ceraseal sealer group with drying technique using paper point was found to have the highest push-out strength, and the AH Plus sealer group (control) was found to have the lowest PBS.
Canal drying technique using paper point for the ceraseal sealer group and 95% ethanol for the AH Plus sealer group were found to have improved adhesion to the root dentin.
根管内不同程度的残余水分已被证明会影响树脂基和硅酸钙基封闭剂的封闭性能。
本研究旨在比较不同根管干燥技术对AH Plus和Ceraseal封闭剂推出粘结强度（PBS）的影响。
64颗单根前磨牙去冠，使用ProTaper Gold旋转锉进行生物力学预备至F2号，根据所用封闭剂类型分为两组：A组：AH Plus，B组：Ceraseal。每组再根据使用纸尖、乙醇、空气抽吸和对照组的不同干燥技术进一步细分为四个亚组。样本进行充填，并使用万能试验机测试PBS。
数据采用单因素方差分析和Tukey检验进行统计学评估。
发现使用纸尖干燥技术的Ceraseal封闭剂组具有最高的推出强度，而AH Plus封闭剂组（对照组）的PBS最低。
发现Ceraseal封闭剂组使用纸尖进行根管干燥技术，AH Plus封闭剂组使用95%乙醇，可提高对牙根牙本质的粘附力。
