Steiner D R
Department of Endodontics, School of Dentistry, University of Washington, USA.
J Endod. 1997 Apr;23(4):242-5. doi: 10.1016/S0099-2399(97)80056-8.
Retaining an ankylosed replanted tooth during jaw growth leads to arrested development of the associated alveolar ridge. As the adjacent teeth erupt and the adjacent alveolar ridge develops, the ankylosed tooth is left in infraocclusion. The severity of the resulting ridge defect depends on the amount of facial growth after ankylosis. The extent of the defect correlates with the length of time an ankylosed tooth is retained during adolescent rapid growth. This case report illustrates the development of an extensive alveolar ridge defect when a replanted tooth became ankylosed and was allowed to remain through an adolescent growth spurt. The change in tooth position is dramatic and reflects the marked difference in ridge development. Clinical guidelines are presented to determine the optimal timing of extraction of ankylosed teeth to maximize alveolar ridge development.
在颌骨生长期间保留一颗强直的再植牙会导致相关牙槽嵴发育停滞。随着邻牙萌出以及相邻牙槽嵴发育，强直的牙齿会处于低位咬合状态。所导致的牙槽嵴缺损的严重程度取决于强直后面部生长的量。缺损的范围与强直牙在青少年快速生长期间被保留的时间长度相关。本病例报告说明了当一颗再植牙发生强直并在青少年生长突增期一直保留时广泛牙槽嵴缺损的发展情况。牙齿位置的变化很显著，反映了牙槽嵴发育的明显差异。本文提出了临床指南，以确定拔除强直牙的最佳时机，从而使牙槽嵴发育最大化。
