von Arx T
Department of Oral and Maxillofacial Surgery, Kantonsspital, Lucerne, Switzerland.
Aust Dent J. 1993 Feb;38(1):1-10. doi: 10.1111/j.1834-7819.1993.tb05444.x.
The topographic relationship of the apices of the primary teeth to the permanent tooth germs explains the potential for possible developmental disturbances of the permanent teeth after injuries to their predecessors. The anatomical, histologic and clinical aspects of permanent tooth malformation following trauma to the primary teeth are described. One hundred and fourteen children with originally 255 traumatized primary teeth have been re-examined (with an average period of 5.1 years after the trauma) to assess any developmental disturbances of the corresponding permanent teeth. Twenty-three per cent of partially or completely erupted permanent teeth showed developmental disturbances. The most frequent malformation was enamel hypoplasia including enamel discoloration and/or enamel defects. The highest prevalence of developmental disturbances of permanent teeth was found after intrusive injuries of primary teeth.
乳牙牙尖与恒牙胚的位置关系解释了乳牙受伤后恒牙可能出现发育障碍的可能性。本文描述了乳牙外伤后恒牙畸形的解剖学、组织学和临床方面。对114名最初有255颗乳牙外伤的儿童进行了复查（外伤后平均5.1年），以评估相应恒牙的任何发育障碍。23%部分或完全萌出的恒牙出现了发育障碍。最常见的畸形是釉质发育不全，包括釉质变色和/或釉质缺损。乳牙嵌入性损伤后恒牙发育障碍的发生率最高。
