de Almeida Josiane Xavier, Deprá Mauren Bitencourt, Marquezan Mariana, Retamoso Luciana Borges, Tanaka Orlando
Dental Press J Orthod. 2013 Jul-Aug;18(4):29-34. doi: 10.1590/s2176-94512013000400006.
To assess the adhesive resistance of metallic brackets bonded to temporary crowns made of acrylic resin after different surface treatments.
180 specimens were made of Duralay and randomly divided into 6 groups (n = 30) according to surface treatment and bonding material: G1 - surface roughening with Soflex and bonding with Duralay; G2 - roughening with aluminum oxide blasting and bonding with Duralay; G3 - application of monomer and bonding with Duralay; G4 - roughening with Soflex and bonding with Transbond XT; G5 - roughening with aluminum oxide blasting and bonding with Transbond XT and G6 - application of monomer and bonding with Transbond. The results were statistically assessed by ANOVA/Games-Howell.
The means (MPa) were: G1= 18.04, G2= 22.64, G3= 22.4, G4= 9.71, G5= 11.23, G6= 9.67. The Adhesive Remnant Index (ARI) ranged between 2 and 3 on G1, G2 and G3 whereas in G4, G5 and G6 it ranged from 0 to 1, showing that only the material affects the pattern of adhesive flaw.
The surface treatment and the material influenced adhesive resistance of brackets bonded to temporary crowns. Roughening by aluminum blasting increased bond strength when compared to Soflex, in the group bonded with Duralay. The bond strength of Duralay acrylic resin was superior to that of Transbond XT composite resin.
评估不同表面处理后金属托槽与丙烯酸树脂制成的临时冠的粘结抗力。
用Duralay制作180个样本，根据表面处理和粘结材料随机分为6组（n = 30）：G1 - 用Soflex进行表面粗糙化处理并用Duralay粘结；G2 - 用氧化铝喷砂粗糙化处理并用Duralay粘结；G3 - 涂抹单体并用Duralay粘结；G4 - 用Soflex粗糙化处理并用Transbond XT粘结；G5 - 用氧化铝喷砂粗糙化处理并用Transbond XT粘结；G6 - 涂抹单体并用Transbond粘结。结果采用方差分析/盖姆斯-豪厄尔检验进行统计学评估。
均值（MPa）分别为：G1 = 18.04，G2 = 22.64，G3 = 22.4，G4 = 9.71，G5 = 11.23，G6 = 9.67。G1、G2和G3组的粘结残留指数（ARI）在2至3之间，而G4、G5和G6组则在0至1之间，表明只有材料会影响粘结缺陷模式。
表面处理和材料会影响与临时冠粘结的托槽的粘结抗力。在与Duralay粘结的组中，与Soflex相比，氧化铝喷砂粗糙化处理提高了粘结强度。Duralay丙烯酸树脂的粘结强度优于Transbond XT复合树脂。
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