Kilinç Delal Dara, Sayar Gülşilay
Department of Orthodontics, School of Dentistry, Istanbul Medipol University, 00 90 212 453 49 52, Istanbul, Turkey.
Department of Orthodontics, School of Dentistry, Istanbul Medipol University, 00 90 212 453 49 52, Istanbul, Turkey.
Int Orthod. 2018 Jun;16(2):294-303. doi: 10.1016/j.ortho.2018.03.001. Epub 2018 Apr 7.
The aim of this study was to evaluate the effect of total surface sandblasting on the shear bond strength of two different retainer wires. The null hypothesis was that there is no difference in the bond strength of the two types of lingual retainer wires when they are sandblasted.
One hundred and sixty human premolar teeth were equally divided into four groups (n=40). A pair of teeth was embedded in self-curing acrylic resin and polished. Retainer wires were applied on the etched and rinsed surfaces of the teeth. Four retainers were used: group 1: braided retainer (0.010×0.028″, Ortho Technology); group 2: sandblasted braided retainer (0.010×0.028″, Ortho Technology); group 3: coaxial retainer (0.0215″ Coaxial, 3M) and group 4: sandblasted coaxial retainer (0.0215″ Coaxial, 3M). The specimens were tested using a universal test machine in shear mode with a crosshead speed of one mm/min.
One-way analysis of variance (Anova) was used to determine the significant differences among the groups. There was no significant difference (P=0.117) among the groups according to this test.
The null hypothesis was accepted. There was no statistically significant difference among the shear bond strength values of the four groups.
本研究的目的是评估全表面喷砂处理对两种不同固位丝剪切粘结强度的影响。原假设是两种类型的舌侧固位丝在喷砂处理后的粘结强度没有差异。
160颗人类前磨牙被平均分为四组（n = 40）。将一对牙齿嵌入自凝丙烯酸树脂中并进行抛光。在牙齿经过酸蚀和冲洗的表面上应用固位丝。使用了四种固位丝：第1组：编织固位丝（0.010×0.028英寸，Ortho Technology公司）；第2组：喷砂处理的编织固位丝（0.010×0.028英寸，Ortho Technology公司）；第3组：同轴固位丝（0.0215英寸同轴，3M公司）；第4组：喷砂处理的同轴固位丝（0.0215英寸同轴，3M公司）。使用万能试验机以1毫米/分钟的十字头速度在剪切模式下对标本进行测试。
采用单因素方差分析（Anova）来确定各组之间的显著差异。根据该测试，各组之间没有显著差异（P = 0.117）。
原假设被接受。四组剪切粘结强度值之间没有统计学上的显著差异。
