Roberts-Harry D, Sandy J
Consultant Orthodontist, Orthodontic Department, Leeds Dental Institute, Clarendon Way, Leeds LS2 9LU.
Br Dent J. 2004 Mar 27;196(6):319-27; quiz 362. doi: 10.1038/sj.bdj.4811074.
This section deals with the important issue of impacted teeth. Impacted canines in Class I uncrowded cases can be improved by removal of the deciduous canines. There is some evidence that this is true for both buccal and palatal impactions. Treatment of impacted canines is lengthy and potentially hazardous. Interceptive measures are effective and preferred to active treatment. Supernumerary teeth may also cause impaction of permanent incisors, their early diagnosis and appropriate treatment is essential to optimise final outcomes. If there are any doubts about impacted teeth it is better to refer too early than too late, this latter option may unnecessarily extend the length of treatment as well as the treatment required.
本节讨论阻生牙这一重要问题。在Ⅰ类牙列不拥挤病例中，拔除乳尖牙可改善阻生尖牙的情况。有证据表明，颊侧和腭侧阻生均是如此。阻生尖牙的治疗过程漫长且有潜在风险。预防性措施有效且优于积极治疗。多生牙也可能导致恒牙切牙阻生，其早期诊断和恰当治疗对于优化最终治疗效果至关重要。如果对阻生牙存在任何疑问，早转诊比晚转诊更好，后一种选择可能会不必要地延长治疗时间以及所需的治疗内容。
