El Sayed Mohamed
College of Dentistry, Ajman University, Ajman P.O. Box 346, United Arab Emirates; Department of Endodontic, Faculty of Dentistry, Mansoura University, Egypt, Orcid: https://orcid.org/0000-0003-3391-5306.
J Contemp Dent Pract. 2024 Oct 1;25(10):976-982. doi: 10.5005/jp-journals-10024-3765.
This study aimed to investigate and compare the total and sectional bond strengths of three endodontic sealers when used with the single-cone obturation technique.
Forty-five human maxillary central incisors were prepared and divided into three groups according to the type of endodontic sealer: Group I (Gutta-percha/AH Plus Jet), group II (Gutta-percha/GuttaFlow 2), and group III (RealSeal/RealSeal SE). All canals were filled with the single-cone technique. Roots were sectioned and scanning electron microscope (SEM) analysis was performed on randomly selected samples from each group to assess the root canal filling interfaces. A root section from each root level was subjected to a push-out test. The sectional and total bond strengths were analyzed, then the failure modes were investigated. Statistical analysis was performed using one-way analysis of variance (ANOVA) and Tukey's test, and alpha was set at 0.05.
Significant differences in bond strength values were observed ( < 0.05), with RealSeal SE demonstrating the highest bond strength, particularly in the middle and apical root regions. On the contrary, GuttaFlow 2 exhibited the lowest bond strength. Cohesive failure modes were more common for AH Plus Jet and GuttaFlow 2, while RealSeal SE showed cohesive and adhesive failures. The SEM analysis revealed that each sealer exhibited different levels of adaptability to dentin and core material.
RealSeal SE and AH Plus Jet showed superior bond strength compared to GuttaFlow 2 when the single-cone obturation technique was used. The apical root sections exhibited the highest bond strength for all sealers, except for AH Plus Jet, which showed a higher bond strength in the coronal root sections.
The current findings could guide dental professionals in choosing the most appropriate sealer for the single-cone obturation technique, potentially leading to more effective obturation procedures, especially for teeth requiring post and core restoration. How to cite this article: El Sayed M. Comparing Sectional and Total Dentin Bond Strengths of Three Endodontic Sealers after Using the Single-cone Obturation Technique: An Study. J Contemp Dent Pract 2024;25(10):976-982.
本研究旨在调查和比较三种根管封闭剂在采用单锥充填技术时的总体粘结强度和断面粘结强度。
选取45颗人上颌中切牙进行预备，根据根管封闭剂类型分为三组：第一组（牙胶尖/AH Plus Jet），第二组（牙胶尖/GuttaFlow 2），第三组（RealSeal/RealSeal SE）。所有根管均采用单锥技术进行充填。将牙根进行切片，对每组随机选取的样本进行扫描电子显微镜（SEM）分析，以评估根管充填界面。对每个牙根水平的根切片进行推出试验。分析断面粘结强度和总体粘结强度，然后研究失败模式。采用单因素方差分析（ANOVA）和Tukey检验进行统计分析，α设定为0.05。
观察到粘结强度值存在显著差异（<0.05），RealSeal SE表现出最高的粘结强度，尤其是在牙根中部和根尖区域。相反，GuttaFlow 2表现出最低的粘结强度。AH Plus Jet和GuttaFlow 2的内聚破坏模式更为常见，而RealSeal SE则表现出内聚破坏和粘结破坏。SEM分析显示，每种封闭剂对牙本质和核心材料的适应性水平不同。
当采用单锥充填技术时，与GuttaFlow 2相比，RealSeal SE和AH Plus Jet表现出更高的粘结强度。除AH Plus Jet在冠部牙根切片中表现出更高的粘结强度外，所有封闭剂在根尖部牙根切片中均表现出最高的粘结强度。
目前的研究结果可为牙科专业人员选择最适合单锥充填技术的封闭剂提供指导，可能会带来更有效的充填程序，特别是对于需要桩核修复的牙齿。如何引用本文：El Sayed M. 比较三种根管封闭剂在采用单锥充填技术后的断面和总体牙本质粘结强度：一项研究。《当代牙科实践杂志》2024；25（10）：976 - 982。
