Uzunçıbuk Hande, Öztaş Süleyman Evren
Trakya University Faculty of Dentistry, Department of Orthodontics, Edirne, Turkey.
İstanbul University Faculty of Dentistry, Department of Orthodontics, İstanbul, Turkey.
Turk J Orthod. 2023 Mar 21;36(1):54-61. doi: 10.4274/TurkJOrthod.2022.2022.61.
In this study, the effects of different chemical solvents such as acetone, ethanol, dimethyl sulfoxide (DMSO), peppermint oil, and hot water on the shear bond strength (SBS) of mechanically and chemically bonded ceramic brackets were examined. Their use for facilitation of the debonding process in practice was evaluated regarding the purposes of this study.
One hundred and thirty-two human premolar teeth extracted for orthodontic purposes were randomly divided into 11 groups. SBS were applied using a universal test machine. The amount of residual adhesives was determined through adhesive remnant index scoring. Scanning electron microscopy (SEM) images were examined to determine the effects of solvents on the enamel surface.
In all test groups, the highest SBS values were found in the ethanol 5- and 15-minutes groups. SEM examination showed micro-cracks in all groups. Increased SBS values were also found in 5- and 15-minutes groups of hot water and DMSO, while both peppermint oil groups had similar SBS values as the control group. SBS values of both acetone 5- and 15-minutes groups were found to be lower than the control and other groups.
Acetone application for 5 or 15 minutes before debonding of ceramic brackets could be an alternative clinical approach to prevent enamel damage and facilitate debonding.
在本研究中，考察了丙酮、乙醇、二甲基亚砜（DMSO）、薄荷油和热水等不同化学溶剂对机械和化学粘结陶瓷托槽剪切粘结强度（SBS）的影响。针对本研究目的，评估了它们在实际中用于促进脱粘过程的情况。
将132颗因正畸目的拔除的人类前磨牙随机分为11组。使用万能试验机施加SBS。通过粘结剂残留指数评分确定残留粘结剂的量。检查扫描电子显微镜（SEM）图像以确定溶剂对牙釉质表面的影响。
在所有测试组中，乙醇5分钟和15分钟组的SBS值最高。SEM检查显示所有组均有微裂纹。热水和DMSO的5分钟和15分钟组也发现SBS值增加，而两个薄荷油组的SBS值与对照组相似。发现丙酮5分钟和15分钟组的SBS值均低于对照组和其他组。
在陶瓷托槽脱粘前应用丙酮5分钟或15分钟可能是一种预防牙釉质损伤并促进脱粘的替代临床方法。
