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Influence of adhesive and bonding material on the bond strength of bracket to bovine tooth

机译:粘合剂和粘结材料对托槽与牛牙粘结强度的影响

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 Aim: To evaluate, in vitro, the effect of adhesive and bonding materials on the shear bond strength (SBS) of metallic brackets bonded to bovine teeth. Methods: Bovine teeth were embedded with acrylic resin, etched with 35% phosphoric acid for 20 s, rinsed, dried for 20 s and divided into 8 groups (n=20), according to the bonding materials and adhesive: Groups 1 and 5 - Transbond XT; Groups 2 and 6 - Fill Magic; Groups 3 and 7 - Biofix; and, Groups 4 and 8 - Orthocem. One layer of adhesive 3 M Unitek (Group 1), and one layer of Single Bond Universal Adhesive (Groups 2, 3 and 4) were applied and light-cured with LED for 10 s. Brackets were bonded to the buccal surface with four bonding materials and light-cured with LED for 40 s. SBS was carried out after 24 h and thermocycling (7,000 cycles - 5?°/55 ?°C). Data were submitted to two way ANOVA and Tukeya€?s post hoc test (?±=0.05). The Adhesive Remaining Index (ARI) was evaluated at 8?—. Results: The adhesive was effective in increasing the SBS for all bonding materials (p&0.05). Significant difference (p&0.05) on the SBS was observed between bonding materials with or without adhesive. The ARI showed a predominance of scores 0 for all groups. Conclusions: The adhesive improved significantly the SBS of the brackets to teeth. Different SBS values occurred among the bonding materials. ARI index showed predominance of score 0 for all groups.
机译:目标:在体外评估粘合剂和粘结材料对粘结到牛牙的金属托的剪切粘结强度(SBS)的影响。方法:将牛牙用丙烯酸树脂包埋,用35%磷酸蚀刻20 s,冲洗,干燥20 s,然后根据粘结材料和粘合剂分为8组(n = 20):第1组和第5组- Transbond XT;第2和6组-充满魔力;第3和第7组-Biofix;以及第4和第8组-Orthocem。施加一层3 M Unitek粘合剂(第1组)和一层单键通用粘合剂(第2、3和4组),并用LED光固化10 s。用四种粘合材料将支架粘合到颊面,并用LED光固化40 s。 SBS在24小时后进行热循环(7,000个循环-5°C / 55°C)。数据被提交给两种方差分析和Tukeya事后检验(?±= 0.05)。胶粘剂剩余指数(ARI)的评估为8?-。结果:该粘合剂有效地提高了所有粘合材料的SBS(p <0.05)。在有或没有粘合剂的粘合材料之间观察到SBS上的显着差异(p <0.05)。 ARI在所有组中的得分均为0。结论:该粘合剂显着改善了托槽对牙齿的SBS。粘结材料之间出现不同的SBS值。 ARI指数显示所有组得分均为0。

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