Quick Andrew N, Harris Angela M P, Joseph Vince P
Discipline of Orthodontics, School of Dentistry, University of Otago, PO Box 647, Dunedin, New Zealand.
Eur J Orthod. 2005 Jun;27(3):231-6. doi: 10.1093/ejo/cjh100.
An investigation was conducted to determine a simple, effective method for reconditioning stainless steel orthodontic attachments in the orthodontic office. In total, 100 new brackets were bonded to premolar teeth, then debonded and the bond strength recorded as a control for the reconditioning process. The debonded brackets were divided into six groups and each group reconditioned using different techniques as follows: attachments in four groups were flamed and then either (1) sandblasted, (2) ultrasonically cleaned, (3) ultrasonically cleaned followed by silane treatment, (4) rebonded without further treatment. Of the two remaining groups, one was sandblasted, while the brackets in the other were roughened with a greenstone. The brackets were rebonded to the premolar teeth after the enamel surfaces had been re-prepared, and their bond strengths measured. The results indicated that sandblasting was the most effective in removing composite without a significant change in bond strength compared with new attachments. Silane application did not improve the bond strength values of flamed and ultrasonically cleaned brackets. Attachments that had only been flamed had the lowest bond strength, followed by those that had been roughened with a greenstone.
开展了一项调查，以确定一种在正畸诊所翻新不锈钢正畸附件的简单有效方法。总共将100个新托槽粘结到前磨牙上，然后取下托槽，并记录粘结强度作为翻新过程的对照。将取下的托槽分为六组，每组采用不同技术进行翻新，具体如下：四组托槽先进行火焰处理，然后分别（1）喷砂处理、（2）超声清洗、（3）超声清洗后进行硅烷处理、（4）不做进一步处理直接重新粘结。其余两组中，一组进行喷砂处理，另一组的托槽用绿石打磨使其粗糙化。在重新制备牙釉质表面后，将托槽重新粘结到前磨牙上，并测量其粘结强度。结果表明，与新托槽相比，喷砂处理在去除复合材料方面最有效，且粘结强度无显著变化。硅烷处理并未提高经过火焰处理和超声清洗的托槽的粘结强度值。仅经过火焰处理的托槽粘结强度最低，其次是用绿石打磨使其粗糙化的托槽。
