Shafiei Fereshteh, Memarpour Mahtab, Jowkar Zahra
Oral and Dental Disease Research Center, Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
Oral and Dental Disease Research Center, Department of Pediatric Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
Braz Dent J. 2020 Sep 4;31(4):409-416. doi: 10.1590/0103-6440202003300.
This study was conducted to evaluate whether antibacterial pretreatment irrigation with silver nanoparticles (SNPs) and silver diamine fluoride (SDF) has any effect on bond strength of fiber posts cemented with three types of resin cements in root canal space. Fifty-four endodontically treated maxillary central incisor roots were prepared for fiber post (FRC Postec Plus NO.3, Ivoclar Vivadent) cementation and divided into nine groups in terms of three cement types and two pretreatments with silver antibacterial agents. The cements were as follows: an etch-and-rinse cement (ER, Excite DSC/Variolink N), a self-etch cement (SE, ED Primer/Panavia F2.0), and a self-adhesive cement (SA, Panavia SA Luting Plus). For each cement, the control group was with no treatment and two experimental groups were with SNPs and SDF treatments that were used after acid-etching for ER cement and after EDTA treatment for SE and SA cements. After fiber post cementation, each bonded root was horizontally sectioned into 1-mm thickness microslices to create two slices for each root region (apical, middle and coronal) and underwent push-out bond strength (PBS) test. Data in MPa were analyzed with two-way ANOVA and Tukey test (p=0.05). The interaction of the pretreatment type and cement type was significant (p<0.001). SNPs and SDF significantly increased PBS with ER cement (p≤0.04). This positive effect was also marginally significant for SDF with SE cement (p=0.049). For SA cement, SNPs showed a significant positive effect, but SDF had a significant adverse effect on PBS (p<0.001). The effect of pretreatment with silver antibacterial agents prior to adhesive cementation of fiber posts depends on the resin cement used. Contrary to SNPs with beneficial or no significant effect on bonding for all cements, SDF exhibited a deleterious effect with self-adhesive cement.
本研究旨在评估用银纳米颗粒（SNPs）和氟化二氨银（SDF）进行抗菌预处理冲洗，对根管内用三种树脂水门汀粘结的纤维桩的粘结强度是否有任何影响。54颗经牙髓治疗的上颌中切牙根被制备用于纤维桩（FRC Postec Plus NO.3，义获嘉伟瓦登特公司）粘结，并根据三种水门汀类型和两种银抗菌剂预处理分为九组。水门汀如下：一种酸蚀冲洗水门汀（ER，Excite DSC/Variolink N）、一种自酸蚀水门汀（SE，ED Primer/Panavia F2.0）和一种自粘结水门汀（SA，Panavia SA Luting Plus）。对于每种水门汀，对照组不进行处理，两个试验组分别进行SNPs和SDF处理，其中SNPs和SDF处理分别在酸蚀冲洗水门汀酸蚀后、自酸蚀水门汀和自粘结水门汀EDTA处理后使用。纤维桩粘结后，将每个粘结的牙根水平切成1毫米厚的微切片，为每个牙根区域（根尖、中部和冠部）制作两片，并进行推出粘结强度（PBS）测试。以兆帕为单位的数据采用双向方差分析和Tukey检验进行分析（p = 0.05）。预处理类型和水门汀类型的交互作用显著（p < 0.001）。SNPs和SDF显著提高了酸蚀冲洗水门汀的PBS（p≤0.04）。对于自酸蚀水门汀，SDF的这种积极作用也略微显著（p = 0.049）。对于自粘结水门汀，SNPs显示出显著的积极作用，但SDF对PBS有显著的不利影响（p < 0.001）。在纤维桩粘结性水门汀粘结前用银抗菌剂进行预处理的效果取决于所使用的树脂水门汀。与SNPs对所有水门汀的粘结有有益或无显著影响相反，SDF对自粘结水门汀表现出有害作用。
