do Espírito Santo Jácomo Diana Ribeiro, Campos Vera
Department of Preventive and Community Dentistry, State University of Rio de Janeiro, Rio de Janeiro, Brazil.
Dent Traumatol. 2009 Jun;25(3):300-4. doi: 10.1111/j.1600-9657.2009.00764.x. Epub 2009 Feb 27.
The aim of this study was to determine the prevalence of sequelae in the permanent anterior teeth following trauma in their predecessors, and also to verify the existence of association between the sequelae in the permanent teeth and the type of injury in their predecessors according to the age group at the time of injury. This study was performed based on data from the records of 169 boys and 138 girls who received assistance at the dental clinic of the State University of Rio de Janeiro from March 1996 to December 2004. The sample was collected from 753 traumatized deciduous teeth of children aged 0-10 years. The number of boys and girls with dental trauma corresponded to 55.0% and 45.0%, respectively. The more affected age period was between 1 and 4 years (75.3%). The most common type of traumatic injury was the intrusion (29.3%), followed by avulsion (14.1%). Concerning permanent dentition, the most common developmental disturbances were discoloration of enamel and/or enamel hypoplasia (46.08%) and eruption disturbances (17.97%) due to the traumatic injury in their predecessors. It was not possible to find an association between the type of injury in primary teeth and sequelae in their successors in the studied age groups (P </= 1.00). The study concluded that discolorations of enamel and/or enamel hypoplasia (46.08%) were the most prevalent sequelae on the permanent dentition and that there was no significant statistical association between the occurrence of sequelae in the permanent teeth and the type of traumatic injury in their predecessors in the studied age groups.
本研究的目的是确定乳牙外伤后恒牙列中后遗症的患病率，并根据受伤时的年龄组，验证恒牙后遗症与乳牙损伤类型之间是否存在关联。本研究基于1996年3月至2004年12月在里约热内卢州立大学牙科诊所接受治疗的169名男孩和138名女孩的记录数据进行。样本取自753颗0至10岁儿童的外伤乳牙。乳牙外伤的男孩和女孩数量分别占55.0%和45.0%。受影响最严重的年龄阶段为1至4岁（75.3%）。最常见的外伤类型是嵌入（29.3%），其次是牙脱位（14.1%）。关于恒牙列，最常见的发育障碍是由于乳牙外伤导致的牙釉质变色和/或牙釉质发育不全（46.08%）以及萌出障碍（17.97%）。在所研究的年龄组中，未发现乳牙损伤类型与其后继恒牙后遗症之间存在关联（P≤1.00）。研究得出结论，牙釉质变色和/或牙釉质发育不全（46.08%）是恒牙列中最普遍的后遗症，在所研究的年龄组中，恒牙后遗症的发生与乳牙外伤类型之间不存在显著的统计学关联。
