Millett D T, Cattanach D, McFadzean R, Pattison J, McColl J
Orthodontic Unit, Glasgow Dental Hospital and School, UK.
Angle Orthod. 1999 Feb;69(1):58-63; discussion 64. doi: 10.1043/0003-3219(1999)069<0058:LEOACA>2.3.CO;2.
The mean shear debonding force of stainless steel orthodontic brackets with microetched bases bonded with either a compomer or a resin-modified glass ionomer cement was assessed. In addition, the amount of cement remaining on the enamel surface following bracket removal was evaluated. Finally, survival time of orthodontic brackets bonded with these materials was assessed following simulated mechanical stress in a ball mill. Debonding force and survival time data were compared with those obtained for brackets bonded with a chemically cured resin adhesive, a light-cured resin adhesive, and a conventional glass ionomer cement. There were no significant differences in mean shear debonding force of brackets bonded with the compomer, resin-modified glass ionomer, chemically cured resin adhesive, or the light-cured resin adhesive. Brackets bonded with a conventional glass ionomer cement had a significantly lower mean shear debonding force than that recorded for the other materials. The Adhesive Remnant Index (ARI) mode score indicated that significantly less cement remained on the enamel following debonding of brackets cemented with resin-modified or conventional glass ionomers compared with other adhesives. The median survival time for brackets cemented with the compomer, resin-modified glass ionomer, chemically cured resin, or light-cured resin were significantly longer than for brackets cemented with conventional glass ionomer. The compomer and the resin-modified glass ionomer adhesive appear to offer viable alternatives to the more commonly used resin adhesives for bracket bonding.
评估了采用复合树脂或树脂改性玻璃离子水门汀粘结的带有微蚀刻基底的不锈钢正畸托槽的平均剪切脱粘力。此外，还评估了托槽拆除后牙釉质表面残留的粘结剂的量。最后，在球磨机中模拟机械应力后，评估了用这些材料粘结的正畸托槽的存活时间。将脱粘力和存活时间数据与用化学固化树脂粘合剂、光固化树脂粘合剂和传统玻璃离子水门汀粘结的托槽所获得的数据进行了比较。用复合树脂、树脂改性玻璃离子、化学固化树脂粘合剂或光固化树脂粘合剂粘结的托槽的平均剪切脱粘力没有显著差异。用传统玻璃离子水门汀粘结的托槽的平均剪切脱粘力明显低于其他材料记录的数值。粘结剂残留指数（ARI）模式评分表明，与其他粘合剂相比，用树脂改性或传统玻璃离子粘结的托槽脱粘后，牙釉质上残留的粘结剂明显更少。用复合树脂、树脂改性玻璃离子、化学固化树脂或光固化树脂粘结的托槽的中位存活时间明显长于用传统玻璃离子粘结的托槽。复合树脂和树脂改性玻璃离子粘合剂似乎为托槽粘结提供了比更常用的树脂粘合剂更可行的替代方案。
