Juvenile chronic arthritis: a cephalometric analysis of the facial skeleton.

摘要: A retrospective cross-sectional cephalometric investigation was undertaken to examine the facial form of a group Finnish children with juvenile chronic arthritis (JCA). Following digitization, radiographs were divided into three age groups, and according whether or not ’bird-face‘ deformity present. From total 67 cases (39 females 28 males) 19 per cent judged be ‘affected’. Analyses carried out groups compared using t -tests. The mandible found smaller both in ramal height body length affected sample, reduction posterior face being only partly compensated by increase bony apposition at angle producing antegonial notching. There rotation angles S–N–B S–N–Pog, an gonial angle, between mandibular plane S–N, maxillary, occlusal planes. The changes maxilla less marked. Although S–N–A reduced all it significantly so. Maxillary (ANS–PNS) two younger groups. In vertical maxillary dimensions highly significant planes observed was, however, no difference S–N indicating more steeply inclined due subnormally erupted molars. inter-incisal there incisor inclinations relation jaws despite size overjet frequency anterior open bite.