Scerri Erica, Gatt Gabriella, Camilleri Simon, Mupparapu Muralidhar
Dental Department, Mater Del Hospital, Malta.
Quintessence Int. 2010 Oct;41(9):717-24.
This study investigated the effects of trauma to primary teeth, related by age at the time of injury and type of injury sustained, to the frequency and type of developmental disturbances in the permanent successor teeth in a representative population of Maltese children.
Thirty-two children with 67 traumatized primary teeth were examined and any developmental disturbances of the corresponding permanent teeth recorded.
Altogether, 52.2% of the permanent teeth exhibited developmental disturbances following trauma to their primary predecessors. The highest frequency of malformations was found following subluxation injuries. Intrusion injuries were associated with the most severe malformations. Age at the time of trauma to the primary dentition was a principal factor in the risk and severity of malformations developing in the permanent successors.
The extent of malformation of the developing tooth germ was highly related to its developmental stage and to the severity and type of trauma sustained by the primary incisor.
本研究调查了马耳他儿童代表性人群中乳牙外伤（根据受伤时的年龄和所受损伤类型）对恒牙继承牙发育障碍的频率和类型的影响。
检查了32名有67颗乳牙外伤的儿童，并记录了相应恒牙的任何发育障碍。
总体而言，52.2%的恒牙在其乳牙前身受到外伤后出现发育障碍。半脱位损伤后畸形发生率最高。嵌入性损伤与最严重的畸形有关。乳牙列受伤时的年龄是恒牙继承牙发生畸形的风险和严重程度的主要因素。
发育中牙胚的畸形程度与其发育阶段以及乳切牙所受创伤的严重程度和类型高度相关。
