Peltola J S
Department of Dental Radiology, University of Helsinki, Finland.
Eur J Orthod. 1993 Jun;15(3):223-7. doi: 10.1093/ejo/15.3.223.
Panoramatomograms of 968 students (355 males and 613 females) aged between 19 and 25 years were evaluated with special emphasis on the mandibular condyles. Two-hundred-and-thirty-five students (24.3 per cent) had been treated orthodontically. Radiographic variations in the condyles were significantly more common in the orthodontically treated group as a whole and in males (n = 71, P < 0.001), but not in females (n = 164). No age correlation in the frequency of condylar variations was found in either group. In terms of individual severe variation, flattening of the articular surface (P < 0.001) and subcortical sclerosis (P < 0.01) were more common in the orthodontically treated students. In the untreated subjects (284 males and 449 females), females had more variations (9.3 per cent) in their condyles than males (3.7 per cent P < 0.001). In the orthodontically treated students the percentages with condylar variations were 21.1 per cent in males and 16.5 per cent in females (N.S.).
对968名年龄在19至25岁之间的学生（355名男性和613名女性）的全景体层摄影片进行了评估，特别关注下颌髁突。235名学生（24.3%）接受过正畸治疗。总体而言，正畸治疗组以及男性（n = 71，P < 0.001）的髁突影像学变化明显更为常见，但女性（n = 164）并非如此。两组均未发现髁突变化频率与年龄之间存在相关性。就个体严重变化而言，正畸治疗的学生中关节面扁平（P < 0.001）和皮质下硬化（P < 0.01）更为常见。在未接受治疗的受试者（284名男性和449名女性）中，女性髁突的变化（9.3%）比男性（3.7%，P < 0.001）更多。在接受正畸治疗的学生中，男性髁突变化的百分比为21.1%，女性为16.5%（无统计学差异）。
