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作者对１９８８～１９９３年间１８７５名正畸门诊患者进行连续调查，就本地区错流行病学资料进行了分析研究。结果表明，不同牙龄组各类错的分布比例及主要错症状具有较大的区别，本地区Ⅱ类错的发病比例较高，症状突出者显著高于全国其它地区。对错的病因分析显示遗传、乳牙早失、乳尖牙磨耗不足、不良习惯、乳牙滞留是构成错的前５个重要因素。临床患者女性居多，女性Ⅰ类与Ⅱ类占明显优势，男性Ⅱ类占优势，这反映了本地区临床流行病学分布趋势。
The author conducted a continuous survey of 1,875 orthodontic patients from 1988 to 1993 and analyzed the epidemiological data of the region. The results showed that the proportion of different types of misdiagnosis in different age groups was significantly different from that of main malocclusion. The incidence of type Ⅱ malocclusion in this region was higher than that in other regions. Etiology analysis of the right and wrong shows genetic, premature deciduous teeth, canine teeth wear, bad habits, deciduous teeth retention constitute the first 5 important factors. The majority of clinical patients were women, women of type I and II accounted for obvious advantages, male class II predominance, which reflects the clinical epidemiological trends in the region.