Piccoli Luca, Migliau Guido, Besharat Laith Konstantinos, Di Carlo Stefano, Pompa Giorgio, Di Giorgio Roberto
Department of Oral and Maxillofacial Sciences, "Sapienza" University of Rome, Rome, Italy.
Ann Stomatol (Roma). 2017 Nov 8;8(2):71-78. doi: 10.11138/ads/2017.8.2.079. eCollection 2017 Apr-Jun.
The purpose of this research is to investigate whether and how the adhesive bond failure site varied in relation to the material used for the orthodontic bonding and debonding technique applied.
Two different methods of orthodontic debonding were included in our survey; cutters for orthodontics and debonding plier. Three different materials for the adhesion of the bracket: composite light curing, self-curing composite and glass ionomer cement. The remaining amount of adhesive on the tooth surface is an important parameter that gives information on how the location of the posting site varied during the debonding. 60 dental elements, maxillary and mandibular, previously extracted for orthodontic reasons, as well as periodontal, were included in our research. We investigated a possible significant correlation between different variables (debonding technique and materials for membership) and the ARI index.
The use of orthodontic cutters or debonding pliers does not affect the adhesive bond failure site and both techniques have a tendency to leave a significant amount of adhesive on the surface enamel. In the resin-reinforced glass ionomer cements, detachment occurs at the interface enamel-adhesive and this pattern of detachment increases the risk of the enamel damage during debonding. In both types of composite resins (photopolymerizable or self-curing), the detachment occurs at the interface bracketing adhesive. In this case the amount of remaining adhesive material on the tooth must be removed with further methods, which in addition, increase the risk of iatrogenic injury as well as the working hours.
本研究旨在调查正畸粘接失败部位是否以及如何因正畸粘接和脱粘技术所使用的材料而异。
我们的调查纳入了两种不同的正畸脱粘方法；正畸切割器和脱粘钳。三种不同的托槽粘接材料：复合光固化材料、自固化复合材料和玻璃离子水门汀。牙齿表面剩余的粘接剂数量是一个重要参数，它能提供关于脱粘过程中粘接部位位置变化的信息。我们的研究纳入了60颗因正畸原因以及牙周原因先前拔除的上颌和下颌牙齿。我们调查了不同变量（脱粘技术和材料类型）与釉质脱矿指数（ARI）之间可能存在的显著相关性。
使用正畸切割器或脱粘钳不会影响粘接失败部位，并且两种技术都倾向于在釉质表面留下大量粘接剂。在树脂增强型玻璃离子水门汀中，脱粘发生在釉质 - 粘接剂界面，这种脱粘模式增加了脱粘过程中釉质损伤的风险。在两种类型的复合树脂（光固化或自固化）中，脱粘发生在托槽 - 粘接剂界面。在这种情况下，牙齿上剩余的粘接材料必须用其他方法去除，此外，这还会增加医源性损伤的风险以及工作时间。
