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本研究选择青少年慢性关节炎(JCA)儿童35名(7～16岁),正常面部结构和理想(牙合)关系儿童136名(7～16岁),远中(牙合)关系儿童62名(7～12岁)。运用全景X线片和头侧位X线片检测髁突损害,分析面部结构,每两组间进行多元回归分析。结果表明:①40％的青少年慢性关节炎儿童是安氏Ⅱ类关系,剩下的为安氏Ⅰ类关系;青少年慢性关节炎儿童的平均覆盖(5mm)介于远中(牙合)儿童(8.5mm)和理想(牙合)儿童之间;青少年慢性关节炎儿童的覆(牙合)((?):1.7mm,s:3.4,范围:—3.5～5.5)和远中(牙合)儿童的覆(牙合)((?):3.5mm,s:3.4,范围:—3.5～6.0)均有较大变化;青少年慢性关节炎儿童上牙弓拥挤超过1mm者占31％,下牙弓拥挤占20％(下牙弓前段局部拥挤占29％),远中(牙合)儿童上牙弓拥挤占
This study selected 35 children (7-16 years) with chronic jaundice (JCA), 136 children (7-16 years old) with normal facial structure and ideal occlusion, 62 children with distant occlusion (7 to 12 years old). The condyle damage was detected by panoramic X-ray and head X-ray. The facial structure was analyzed and multiple regression analysis was performed between the two groups. The results showed that: (1) 40% of the children with chronic arthritis were Class Ⅱ and the rest were Class Ⅰ; the average coverage of children with chronic arthritis (5mm) mm) and ideal (occlusal) children; children with chronic arthritis in adolescent (occlusal) (1.7: 1.7, s: 3.4, range: -3.5-5.5) (?): 3.5mm, s: 3.4, range: -3.5 ~ 6.0) in children with chronic arthritis. In children with chronic arthritis, the number of dental crowding over 1mm accounted for 31%, the lower dental arch Congestion accounted for 20% (29% of the local arch in the anterior arch of the lower arch), crowding of the arch on the distal (occlusal) child accounted for