Shafiei Fereshteh, Akbarian Sahar, Karim Etminan Mohammad
Professor, Prevention of Oral and Dental Disease Research Center, Department of Operative Dentistry, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
Assistant Professor, Department of Operative Dentistry, Faculty of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran.
J Dent Res Dent Clin Dent Prospects. 2015 Summer;9(3):144-50. doi: 10.15171/joddd.2015.028. Epub 2015 Sep 16.
Background and aims. Nano-ionomer (NI) interacts with tooth structures superficially, and there is a concern about the enamel bonding ability of mild self-etch Ketac primer. This study compared the effect of different adhesive procedures (self-etching and etch-and-rinse approach) on long-term marginal microleakage of nano-filled resin-modified glass-ionomer (NI) cervical restorations. Materials and methods. Class V cavities were prepared on 72 maxillary premolars. The teeth were divided into six groups: G1: No treatment (NC); G2: Ketac primer (K primer); G3: Etchant + Ketac primer (E+K primer); G4: Self-etch adhesive (Bond Force); G5: Etchant + Bond Force (E+Bond Force); G6: Etchant + Adper Single Bond (Etch and rinse adhesive). All the cavities were restored with Ketac N100. The samples were stored in water for 6 months and thermocycled for 2000 cycles. Marginal sealing was assessed using dye penetration technique. Data were analyzed with non-parametric tests (α=0.05). Results. All the adhesive pretreatments resulted in a lower marginal leakage than that of NC (P≤0.01), except for E+Bond Force at the dentin margin. There was no significant difference between K primer and Bond Force. Microleakage differed significantly between K primer pretreatment and E+K primer (P=0.003), E+Bond Force (P=0.002) and etch-and-rinse adhesive (P=0.001) at the enamel margin, but it did not differ at the dentin margin. E+ Bond Force group showed insignificantly lower leakage at the enamel margin and significantly higher leakage at the dentin margin (P=0.02). Conclusion. Etch-and-rinse adhesive and selective enamel etching along with self-etch adhesive/Ketac primer might improve marginal sealing of aged nano-ionomer restoration.
背景与目的。纳米离子聚合物（NI）与牙齿结构进行表面相互作用，人们对温和型自酸蚀Ketac底胶的釉质粘结能力存在担忧。本研究比较了不同粘结程序（自酸蚀法和酸蚀冲洗法）对纳米填充树脂改性玻璃离子（NI）颈部修复体长期边缘微渗漏的影响。材料与方法。在72颗上颌前磨牙上制备V类洞。将牙齿分为六组：G1：未处理（NC）；G2：Ketac底胶（K底胶）；G3：酸蚀剂 + Ketac底胶（E + K底胶）；G4：自酸蚀粘结剂（Bond Force）；G5：酸蚀剂 + Bond Force（E + Bond Force）；G6：酸蚀剂 + Adper单组分粘结剂（酸蚀冲洗粘结剂）。所有窝洞均用Ketac N100进行修复。将样本在水中储存6个月并进行2000次热循环。使用染料渗透技术评估边缘封闭情况。数据采用非参数检验进行分析（α = 0.05）。结果。除了在牙本质边缘的E + Bond Force组外，所有粘结预处理导致的边缘渗漏均低于NC组（P≤0.01）。K底胶和Bond Force之间无显著差异。在釉质边缘，K底胶预处理与E + K底胶（P = 0.003）、E + Bond Force（P = 0.002）和酸蚀冲洗粘结剂（P = 0.001）之间的微渗漏有显著差异，但在牙本质边缘无差异。E + Bond Force组在釉质边缘的渗漏略低但无统计学意义，而在牙本质边缘的渗漏显著更高（P = 0.02）。结论。酸蚀冲洗粘结剂以及选择性釉质酸蚀联合自酸蚀粘结剂/Ketac底胶可能会改善老化纳米离子聚合物修复体的边缘封闭。
