Atwan S, DesRosiers D
Pediatric Dentistry Department, University of Detroit Mercy, School of Dentistry, USA.
ASDC J Dent Child. 1998 Jul-Aug;65(4):272-5, 230.
Impaction of a primary tooth is a rare occurrence compared to impaction of a permanent tooth. Impaction should be differentiated from reimpaction, a condition in which an erupted tooth loses its apical movement and impaired development of the alveolar bone surrounding the tooth occurs. In dental ankylosis, the height of the alveolar process stops in the affected area, the adjoining teeth continue to move occlusally, and neighboring teeth drift. The author discusses the uncertain etiology of reimpaction. The history of a three-year-old patient is presented.
与恒牙阻生相比，乳牙阻生较为罕见。阻生应与再阻生相鉴别，再阻生是指已萌出的牙齿失去根尖移动且其周围牙槽骨发育受损的情况。在牙粘连中，牙槽突高度在患区停止生长，相邻牙齿继续向咬合面移动，邻牙发生漂移。作者讨论了再阻生病因的不确定性。并呈现了一名三岁患者的病例史。
