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目的探讨骨性安氏Ⅲ类错畸形与蝶鞍大小、形态以及鞍桥发生率的相关性,为制定正确的矫治计划提供参考。方法选取2002—2015年中国医科大学附属口腔医院正畸-正颌联合治疗的骨性安氏Ⅲ类错患者249例为试验组,其中男120例,女性129例;仅接受正畸治疗的安氏Ⅰ类错者患者296例为对照组,其中男150例,女146例;所有患者年龄18~36岁。Winceph 8.0软件定位蝶鞍相关标记点,测量蝶鞍的长度、深度和直径,记录蝶鞍形态(椭圆形、圆形、扁平状)以及鞍桥类型(无鞍桥、部分鞍桥、完全鞍桥)。采用SPSS 21.0统计软件对所得数据进行统计分析。结果试验组与对照组蝶鞍长度和深度差异均有统计学意义(均P<0.05),而蝶鞍直径差异无统计学意义(P>0.05);两组男性与女性蝶鞍长度差异均有统计学意义(均P<0.05),而蝶鞍深度和直径差异均无统计学差异(均P>0.05)。试验组蝶鞍各形状所占比例从大至小依次为扁平状、圆形和椭圆形,对照组依次为圆形、扁平状和椭圆形,两组男性与女性蝶鞍形态差异均无统计学意义(均P>0.05)。试验组鞍桥发生率为68.27%,对照组为17.23%,差异有统计学意义(P<0.05);两组男性与女性鞍桥类型比较,差异均无统计学意义(均P>0.05)。结论骨性安氏Ⅲ类错畸形与蝶鞍大小和形态显著相关,骨性安氏Ⅲ类错患者的鞍桥发生率较对照组明显增加。
Objective To investigate the correlation between the skeletal Class Ⅱ malocclusion and the size, shape and incidence of saddle, so as to provide a reference for formulating the correct correction plan. Methods A total of 249 patients with skeletal Class Ⅱ malocclusion treated by orthodontic-orthognathic surgery at China Stomatological Hospital Affiliated to China Medical University from 2002 to 2015 were selected as the experimental group, including 120 males and 129 females, and only orthodontics 296 cases of type Ⅰ wrong patients as control group, including 150 males and 146 females; all patients aged 18 to 36 years. The Winceph 8.0 software locates sellar related markers, measures the length, depth and diameter of the sella, and records the shape of the sella (elliptical, circular, flat) and the type of saddle (saddle, partial saddle, complete saddle ). Statistical analysis of the data was performed using SPSS 21.0 statistical software. Results There were significant differences in the length and depth of the sella in test and control groups (all P <0.05), but there was no significant difference in sella diameter (P> 0.05) (All P <0.05), while there was no significant difference in the depth and diameter of sella (all P> 0.05). The proportions of the shapes of the sellar in the experimental group were flat, round and oval in descending order, and the control groups were round, flat and oval in sequence, with no statistical difference in the sellar shape between the two groups Significance (all P> 0.05). The incidence of saddle bridge in trial group was 68.27% and in control group was 17.23%, the difference was statistically significant (P <0.05). There was no significant difference in saddle bridge types between male and female in both groups (P> 0.05). Conclusion The skeletal Class Ⅱ malocclusion has a significant correlation with the size and shape of the sella. The incidence of saddle bridge in patients with skeletal Class Ⅱ malocclusion is significantly higher than that in the control group.