Adl Alireza, Abbaszadegan Abbas, Gholami Ahmad, Parvizi Fateme, Ghahramani Yasamin
Department of Endodontics, Biomaterials Research Center, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
Pharmaceutical Sciences Research Center, Department of Pharmaceutical Biotechnology, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran.
Iran Endod J. 2019 Spring;14(2):122-125. doi: 10.22037/iej.v14i2.22589.
The aim of this study was to evaluate the effect of a new imidazolium-based silver nanoparticle (ImSNP) root canal irrigant on the bond strength of AH-Plus sealer to root canal dentine.
Forty single-rooted extracted human teeth were used in this study. The crowns were resected and according to the irrigation solutions used during root canal preparation, the roots were divided into 5 groups (=8): Group 1: normal saline (control group), Group 2: 2.5% Sodium Hypochlorite (NaOCl), Group 3: 2.5% NaOCl+17% ethylene diamin tetracetic acid (EDTA), Group 4: silver nanoparticles (AgNPs), Group 5: AgNPs +17% EDTA. After root canal instrumentation, the canals were filled with AH-Plus. Then, after 7 days, 2 or 3 dentine disks were obtained from the mid-root of each sample. Bond strength was measured by the push-out test. Additionally, failure patterns were classified as adhesive, cohesive and mixed. Data were statistically analyzed by one-way ANOVA and Tamhane post hoc tests. The level of significance was set at 0.05.
There was no statistically significant differences between groups (>0.05). Groups 4 (AgNPs), 3 (2.5% NaOCl+17% EDTA) and 2 (2.5% NaOCl) showed statistically higher bond strength compared to group 1 (control group) (<0.05). Also, Group 4 showed a significant difference with group 5 (AgNPs+17% EDTA) (=0.017). The failure patterns were mainly cohesive.
This study showed that, when used without EDTA, AgNPs improved the bond strength of AH-Plus to radicular dentine.
本研究的目的是评估一种新型基于咪唑鎓的银纳米颗粒（ImSNP）根管冲洗剂对AH-Plus封闭剂与根管牙本质粘结强度的影响。
本研究使用了40颗单根拔除的人类牙齿。切除牙冠，并根据根管预备过程中使用的冲洗液，将牙根分为5组（每组8颗）：第1组：生理盐水（对照组），第2组：2.5%次氯酸钠（NaOCl），第3组：2.5% NaOCl + 17%乙二胺四乙酸（EDTA），第4组：银纳米颗粒（AgNPs），第5组：AgNPs + 17% EDTA。根管预备后，根管内充填AH-Plus。然后，7天后，从每个样本的牙根中部获取2或3个牙本质圆盘。通过推出试验测量粘结强度。此外，将失败模式分为粘结性、内聚性和混合性。数据采用单因素方差分析和Tamhane事后检验进行统计学分析。显著性水平设定为0.05。
各组之间无统计学显著差异（>0.05）。与第1组（对照组）相比，第4组（AgNPs）、第3组（2.5% NaOCl + 17% EDTA）和第2组（2.5% NaOCl）的粘结强度在统计学上显著更高（<0.05）。此外，第4组与第5组（AgNPs + 17% EDTA）有显著差异（=0.017）。失败模式主要为内聚性。
本研究表明，在不使用EDTA的情况下，AgNPs可提高AH-Plus与牙根牙本质的粘结强度。
