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目的比较安氏Ⅲ类骨性Ⅲ类与安氏I类错畸形舌体形态位置及舌骨位置。方法对46例患者(实验组安氏Ⅲ类骨性Ⅲ类26例,对照组安氏I类20例)拍摄头侧位X光片并在舌背涂抹硫酸钡糊剂,选择舌体及舌骨的17个点进行描记,对13个测量值进行分析。结果 (1)安氏Ⅲ类骨性Ⅲ类错畸形患者比安氏I类错畸形患者舌尖位置偏前(O-T1)、舌根位置偏后(O-T7)、舌体中断偏低(O-T2,T3)有统计学意义(P<0.05);(2)安氏Ⅲ类骨性Ⅲ类错畸形患者比安氏I类错畸形患者舌长更长(ET)有显著统计学意义(P<0.01);(3)安氏Ⅲ类骨性Ⅲ类错畸形患者比安氏I类错畸形患者舌骨位置偏前下方(P<0.05,P<0.01)有统计学意义。结论安氏Ⅲ类骨性Ⅲ类与安氏I类错畸形舌体形态位置及舌骨位置相比舌体形态位置及舌骨位置均有不同,安氏Ⅲ类骨性Ⅲ类错畸形较安氏I类错畸形舌长偏长,舌骨位置偏前下方。
Objective To compare the morphology and hyoid position of Angle Ⅲ skeletal Class Ⅲ and Angle Class Ⅰ malocclusion. Methods 46 patients (experimental group, 32 cases of Class Ⅲ osteosarcoma Ⅲ and 20 cases of Class I, control group) were performed lateral radiographs and barium sulphate paste was applied on the tongue back to select the tongue and tongue The 17 points of the bone were traced and 13 measurements were analyzed. Results (1) O-T1, O-T7 and tongue-body interruption were lower in patients with Class Ⅲ skeletal Class Ⅲ malocclusion than those with Class Ⅰ malocclusion (P <0.05). (2) Patients with Class Ⅲ skeletal Class Ⅲ malocclusion had longer tongue length (ET) than those with Class Ⅰ malocclusion (P <0.01). (3) There was statistical significance in hyoid position (P <0.05, P <0.01) in Angle Ⅲ skeletal Class Ⅲ malocclusion patients than Angle Class I malocclusion patients Significance of learning. Conclusions There is a difference between the position of the lingual body and the position of the lingual body in Class Ⅲ skeletal Class Ⅲ and Class Ⅰ malocclusion. The Class Ⅲ skeletal Class Ⅲ malocclusion Angle class I malocclusion malformation tongue length long partial hyoid position below the front.