Mortelliti G M, Needleman H L
The Children's Hospital, Boston.
Pediatr Dent. 1991 Sep-Oct;13(5):273-7.
Maxillary occlusal radiographs of 233 children between 42 and 60 months old were examined for the presence or absence of atypical root resorption (ARR). In addition, the dental records of these children were examined to determine if an association existed between ARR, oral habits, documented trauma and overjet. Thirty-three (14.2%) of the patients had radiographic evidence of ARR of either maxillary primary incisor. Children with a positive history of both trauma to the incisors and oral habits had a statistically higher prevalence of ARR than those without either finding (P = .03). ARR was more prevalent as overjet increased, independent of trauma, and oral habits (P = .03). Furthermore, as the number of risk factors (large overjet, documented trauma, and oral habits) increased, the likelihood of developing ARR also increased.
对233名42至60个月大儿童的上颌咬合片进行检查，以确定是否存在非典型性牙根吸收（ARR）。此外，检查这些儿童的牙科记录，以确定ARR、口腔习惯、有记录的外伤和覆盖是否存在关联。33名（14.2%）患者的上颌乳切牙有影像学证据显示存在ARR。有切牙外伤和口腔习惯阳性史的儿童，其ARR患病率在统计学上高于未发现这两种情况的儿童（P = 0.03）。无论外伤和口腔习惯如何，随着覆盖增加，ARR更为普遍（P = 0.03）。此外，随着危险因素（大覆盖、有记录的外伤和口腔习惯）数量的增加，发生ARR的可能性也增加。
