Pithon Matheus Melo, dos Santos Rogerio Lacerda
Faculty of Dentistry, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil.
Aust Orthod J. 2010 May;26(1):73-7.
Ozone water can be used to eliminate micro-organisms from the water systems in dental offices.
To determine if ozone water diminishes the bond strength of orthodontic adhesives.
One hundred and twenty bovine mandibular incisors were randomly divided into four equal groups. The teeth were cleaned with pumice and washed either with tap water (Groups 1 and 3) or with ozone water Groups (2 and 4) before bonding stainless steel orthodontics brackets to the teeth with either a composite resin (Groups 1 and 2; Transbond XT, 3M Unitek, Monrovia, CA, USA) or a resin-modified glass ionomer cement (Groups 3 and 4; Fuji Ortho LC, GC America Corporation, Tokyo, Japan). The manufacturers' recommendations for bonding were followed. All samples were subjected to thermal cycling and the shear bond strengths were determined with a universal testing machine. The Adhesive Remnant Index (ARI) was used to score the amount of resin remaining on the teeth after debonding the brackets.
There were no statistical differences in the shear bond strengths of the brackets debonded from enamel washed with either ozone water or tap water or between the groups bonded with the two adhesive resins (p = 0.595). The ARIs in Groups 2 and 3 were significantly different from the ARIs in Groups 3 and 4 (p = 0.030).
Ozone water did not alter the bond strength of brackets bonded with composite resins, but it did alter the sites of resin fracture when Fuji Ortho LC was used.
臭氧水可用于清除牙科诊所水系统中的微生物。
确定臭氧水是否会降低正畸粘合剂的粘结强度。
将120颗牛下颌切牙随机分为四组，每组数量相等。在用复合树脂（第1组和第2组；Transbond XT，3M Unitek，美国加利福尼亚州蒙罗维亚）或树脂改性玻璃离子水门汀（第3组和第4组；Fuji Ortho LC，GC America Corporation，日本东京）将不锈钢正畸托槽粘结到牙齿上之前，先用浮石清洁牙齿，并用自来水冲洗（第1组和第3组）或臭氧水冲洗（第2组和第4组）。遵循制造商的粘结建议。所有样本均进行热循环处理，并用万能试验机测定剪切粘结强度。使用粘结剂残留指数（ARI）对托槽脱粘后牙齿上残留的树脂量进行评分。
用臭氧水或自来水冲洗釉质后脱粘的托槽的剪切粘结强度，或用两种粘结树脂粘结的组之间，均无统计学差异（p = 0.595）。第2组和第3组的ARI与第3组和第4组的ARI有显著差异（p = 0.030）。
臭氧水不会改变用复合树脂粘结的托槽的粘结强度，但在使用Fuji Ortho LC时，它确实会改变树脂断裂的部位。
