Infection should be avoided and occlusal interference should be reduced.

应尽量避免术后感染，减少颌干扰的发生。

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The purpose of a removable appliance used with fixed appliance is to eliminate occlusal interference, reduce the falling chances of bracket from teeth and cut down the period of treatment.

在固定矫治技术中配合使用活动矫治装置是为了消除干扰，减少锁槽脱落，缩短疗程。

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