Chatzigianni Athina, Kyprianou Chrystalla, Papadopoulos Moschos A, Sidiropoulou Sossani
Department of Orthodontics, School of Dentistry, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece.
, Thessaloniki, Greece.
J Orofac Orthop. 2018 Mar;79(2):133-139. doi: 10.1007/s00056-018-0121-9. Epub 2018 Feb 20.
Juvenile idiopathic arthritis (JIA) is an autoimmune disease with multiple potential causal factors. In case of temporomandibular joint (TMJ) affection, the inflammatory reaction can result in restricted mandibular growth with implied skeletal and facial deformities. Aim of the present study was to examine dentoalveolar and occlusion characteristics in children with JIA.
The sample consisted of 66 children (27 boys, 39 girls) with JIA. Thirty-three of them showed unilateral or bilateral condylar destruction, while the other half did not manifest any TMJ involvement. Corresponding dental casts of these patients were evaluated and Angle classification, overjet, overbite, crossbite, crowding, and ectopic teeth were registered. All dental casts were subsequently scanned and digitized to analyze 26 additional variables. Subgroups according to sex and condylar affection were formed. Statistical analysis was performed using Fisher's least significant difference (LSD) post hoc test of analysis of variance (ANOVA).
The prevalence of Class II, division 1 malocclusion in this JIA sample was high (28.8%). Compared to girls, boys had significantly greater dental arch widths and lengths. The group with bilateral condylar affection had significantly decreased lower arch length and increased irregularity index (p < 0.035) compared to the non-affected group.
Bilateral condylar involvement in children with JIA seems to reduce the lower arch length, while increasing the irregularity index of the lower front teeth.
幼年特发性关节炎（JIA）是一种具有多种潜在病因的自身免疫性疾病。在颞下颌关节（TMJ）受累的情况下，炎症反应可导致下颌生长受限，并伴有骨骼和面部畸形。本研究的目的是检查JIA患儿的牙列和咬合特征。
样本包括66例JIA患儿（27例男孩，39例女孩）。其中33例表现为单侧或双侧髁突破坏，而另一半未表现出任何TMJ受累。对这些患者的相应牙模进行评估，并记录安氏分类、覆盖、覆合、反合、拥挤和异位牙情况。随后对所有牙模进行扫描和数字化处理，以分析另外26个变量。根据性别和髁突受累情况形成亚组。使用方差分析（ANOVA）的Fisher最小显著差异（LSD）事后检验进行统计分析。
该JIA样本中安氏II类1分类错合的患病率较高（28.8%）。与女孩相比，男孩的牙弓宽度和长度明显更大。与未受累组相比，双侧髁突受累组的下牙弓长度明显缩短，不规则指数增加（p < 0.035）。
JIA患儿双侧髁突受累似乎会缩短下牙弓长度，同时增加下前牙的不规则指数。
