一项关于托槽和颊面管粘结失败原因的回顾性调查。
A retrospective survey of the causes of bracket- and tube-bonding failures.
作者信息
Roelofs Tom, Merkens Nico, Roelofs Jeroen, Bronkhorst Ewald, Breuning Hero
出版信息
Angle Orthod. 2017 Jan;87(1):111-117. doi: 10.2319/021616-136.1. Epub 2016 Jun 15.
OBJECTIVE
To investigate the causes of bonding failures of orthodontic brackets and tubes and the effect of premedicating for saliva reduction.
MATERIALS AND METHODS
Premedication with atropine sulfate was administered randomly. Failure rate of brackets and tubes placed in a group of 158 consecutive patients was evaluated after a mean period of 67 weeks after bonding.
RESULTS
The failure rate in the group without atropine sulfate premedication was 2.4%. In the group with premedication, the failure rate was 2.7%. The Cox regression analysis of these groups showed that atropine application did not lead to a reduction in bond failures. Statistically significant differences in the hazard ratio were found for the bracket regions and for the dental assistants who prepared for the bonding procedure.
CONCLUSIONS
Premedication did not lead to fewer bracket failures. The roles of the dental assistant and patient in preventing failures was relevant. A significantly higher failure rate for orthodontic appliances was found in the posterior regions.
目的
研究正畸托槽和矫治管粘结失败的原因以及唾液减少预处理的效果。
材料与方法
随机给予硫酸阿托品进行预处理。在粘结后平均67周后，评估一组158例连续患者所放置托槽和矫治管的失败率。
结果
未进行硫酸阿托品预处理组的失败率为2.4%。预处理组的失败率为2.7%。对这些组进行的Cox回归分析表明，应用阿托品并未导致粘结失败率降低。在托槽区域以及为粘结程序做准备的牙科助手方面，发现风险比存在统计学显著差异。
结论
预处理并未减少托槽失败。牙科助手和患者在预防失败方面的作用是相关的。正畸矫治器在后牙区域的失败率显著更高。
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