PDF(Pubmed)
Abstract：
BACKGROUND Dentin contamination with hemostatic agents before bonding indirect restorations negatively affects the bond strength. However, the consensus on which materials could be used to clean contamination of hemostatic agents has not been explored. The aim of this study was to assess the effect of Katana Cleaner applied on the surface of dentin contaminated with hemostatic agents on the shear bond strength (SBS) of self-adhesive resin cement by comparing it with three other surface cleaners. MATERIAL AND METHODS Ninety dentin specimens were divided into a no contamination group (control) (n=10), 4 groups contaminated with 25% aluminum chloride (Viscostat Clear) (n=40), and 4 groups contaminated with 20% ferric sulfate (Viscostat) (n=40). Subsequently, 4 different cleaners were used for each contamination group (water rinse, phosphoric acid, chlorhexidine, and Katana Cleaner). Then, self-adhesive resin cement was directly bonded to the treated surfaces. All specimens were subjected to 5000 thermal cycles of artificial aging. The shear bond strength was measured using a universal testing machine. RESULTS Two-way analysis of variance showed that the contaminant type as the main factor was statistically non-significant (p=0.655), cleaner type as the main factor was highly significant (p<0.001), and interaction between the contaminant and cleaner was non-significant (p=0.51). The cleaner type was the main factor influencing the bond strength. Phosphoric acid and chlorhexidine showed better performance than Katana Cleaner. CONCLUSIONS Cleaning dentin surface contamination with phosphoric acid and chlorhexidine had better performance than with Katana Cleaner.
摘要：
背景技术在粘结间接修复物之前,用止血剂污染牙本质负面地影响粘结强度。然而,关于哪些材料可用于清洁止血剂污染的共识尚未探讨。这项研究的目的是通过与其他三种表面清洁剂进行比较，来评估在被止血剂污染的牙本质表面上应用的Katana清洁剂对自粘树脂水泥的剪切粘结强度（SBS）的影响。材料和方法将90例牙本质标本分为无污染组（对照组）（n=10），4组污染了25%的氯化铝（ViscostatClear）（n=40），和4组被20％硫酸铁（Viscostat）污染（n=40）。随后，每个污染组使用4种不同的清洁剂(水冲洗，磷酸,氯己定,和Katana清洁剂）。然后，自粘树脂水泥直接粘合到处理过的表面。所有样品都经历了5000个热循环的人工老化。使用万能试验机测量剪切粘结强度。结果双向方差分析显示，以污染物类型为主要因素的差异无统计学意义(p=0.655)。以清洁剂类型为主要因素具有高度显著性(p<0.001)，污染物和清洁剂之间的相互作用不显著(p=0.51)。清洁剂类型是影响粘结强度的主要因素。磷酸和氯己定显示出比Katana清洁剂更好的性能。结论磷酸和氯己定清洁牙本质表面污染的性能优于Katana清洁剂。
