1. Methods By adhering the bracket to the movable teeth and holding the butment erect or adjusting edentulous space depend on different clinical needs.
   方法在需要移动的牙齿上粘着托槽,根据修复要求,竖直基牙或扩大、减少缺牙间隙。
2. Results A two-year follow-up revealed there occurred butment caries,luxated butment,and overlain residual root gingivitis,even on the rise,while the alveolar ridge showed no uneven absorption.
   结果基牙根龋、基牙松动、覆盖残根牙龈炎的发生随时间呈递增趋势,而牙槽嵴则无不均匀吸收。

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