D'Amario Maurizio, Bernardi Sara, Di Lauro Daniele, Marzo Giuseppe, Macchiarelli Guido, Capogreco Mario
Department of Life, Health and Environmental Sciences, University of L'Aquila, 67100 L'Aquila, Italy.
Microscopy Center, University of L'Aquila, 67100 L'Aquila, Italy.
Dent J (Basel). 2020 Jun 17;8(2):58. doi: 10.3390/dj8020058.
There is currently no consensus on the best way to remove adhesive remnants from teeth following debonding. The main objective of this study is to evaluate and compare the effectiveness of four adhesive resin removal (clean-up) techniques, performed with or without the use of an operative microscope. Forty human teeth were duplicated using an epoxy resin for impregnation. Brackets were bonded to teeth and debonded from teeth. Then, the samples were randomly divided into two equal groups-the naked eye group and the magnification group-and further subdivided into four equal subgroups, in order to compare the different techniques used for the clean-up. Each subgroup was formed of five natural teeth with the respective pre- and post-bonding replicas. Macro- and micro-analysis by means of a stereomicroscope and scanning electron microscopy evaluated, qualitatively and quantitatively, the adhesive remnant index and the damage index of the enamel. Overall, the magnification improved the removal of resins compared to the naked eye ( < 0.001), and the use of magnification constantly reduced resin residual and surface damage. Enamel damage and adhesive residual from the clean-up procedures represent an ascertained risk in orthodontics. The use of a magnification system improves the quality of debonding and clean-up techniques in a significant way.
目前，对于牙齿脱粘后去除粘结剂残留的最佳方法尚无共识。本研究的主要目的是评估和比较四种粘结树脂去除（清理）技术在使用或不使用手术显微镜情况下的有效性。使用环氧树脂浸渍法复制了40颗人牙。将托槽粘结到牙齿上，然后再从牙齿上取下。接着，将样本随机分为两组，每组20个，分别为肉眼组和放大组，再将每组进一步细分为四个亚组，每组5个，以比较不同的清理技术。每个亚组由五颗天然牙及其粘结前后的复制牙组成。通过体视显微镜和扫描电子显微镜进行宏观和微观分析，对粘结剂残留指数和牙釉质损伤指数进行了定性和定量评估。总体而言，与肉眼相比，放大操作改善了树脂的去除效果（P<0.001），并且使用放大设备持续减少了树脂残留和表面损伤。正畸治疗中，清理过程造成的牙釉质损伤和粘结剂残留是确定存在的风险。使用放大系统能显著提高脱粘和清理技术的质量。
