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目的探讨青少年AngleⅡ1错患者的错机制、颅面形态特征及发育规律。方法随机抽取在枣庄市口腔医院就诊的青少年AngleⅡ1错患者79例为研究对象,对每位患者拍摄头颅定位侧位X线片,将X线片扫描入电子计算机,通过Winceph7.0 X线头影测量软件系统进行定点、描图,使用Steiner分析法对颅面部的相关点、线、角进行测量,并将所得的各项测量数据与正常标准值进行比较。结果青少年AngleⅡ1错患者与正常进行比较,SNB、ANB、SND、1-NA(mm)、1-NA、1-1(-)、GoGn-SN、SL(mm)的8项测量值与正常值比较差异有统计学意义(P<0.05)。结论枣庄地区青少年AngleⅡ1错患者上颌基本正常,下颌相对上颌明显后缩,上切牙前突,上下切牙位置明显唇倾。
Objective To investigate the error mechanism, craniofacial morphology and developmental rules of Angle Ⅱ 1 malocclusion in adolescents. Methods Totally 79 adolescents with AngleⅡ1 malocclusion admitted to the Stomatological Hospital of Zaozhuang City were randomly selected as the study subjects. The skull radiographs were taken from each patient. The X-ray films were scanned into electronic computers and scanned by Winceph7.0 X- Measurement software system for fixed-point, tracing, Steiner analysis of craniofacial related points, lines, angles were measured, and the resulting measurements were compared with the normal standard values. Results Compared with the normal subjects, the measured values of SNB, ANB, SND, 1-NA (mm), 1-NA, 1-1 (-), GoGn-SN and SL (mm) The difference was statistically significant (P <0.05). Conclusion The Angle Ⅱ1 malocclusion patients in Zaozhuang area are basically normal, the mandible is significantly retarded relative to the maxilla, and the upper incisors protrude and the position of the upper and lower incisors is obviously lip-leaning.