Yang Jing, Li Ya-Zhen, Liu Ying, Zhang Qiang, Yuan Xiao
Postgraduate Student, Department of Stomatology, Qingdao University. Qingdao 266003, China. E-mail:
Shanghai Kou Qiang Yi Xue. 2019 Jun;28(3):284-287.
To investigate the prevalence of malocclusion and the correlation between caries and malocclusion in mixed dentition of primary students in Laoshan district of Qingdao city, to provide a scientific basis for early orthodontic treatment.
According to WHO's oral health survey (basic methods), a survey concerning oral health was performed in 1803 children aged 8-9 years old. SPSS 17.0 software package was used for statistical analysis .
1322 of 1803 pupils suffered from malocclusion, the prevalence of malocclusion in children surveyed was (73.32%). There were 519 cases(39.26%) of Class I malocclusion, 374 cases(28.29%) of Class II malocclusion, 357(27.00%) cases of Class III malocclusion, 72 cases (5.45%) with asymmetric malformation. As regard to clinical manifestations, deep overbite accounted for(37.67%) ,followed by deep overjet(29.19%), dental crowding (16.94%) and crossbite(16.03%). The prevalence of caries was 64.23%. Among them, there were 625 males (34.66%) and 532 females(29.51%).
The prevalence rate of malocclusion in mixed dentition of primary students in Laoshan district of Qingdao district is not optimistic, the incidence of malocclusion is closely related to caries.
调查青岛市崂山区小学生混合牙列期错牙合畸形的患病率以及龋病与错牙合畸形之间的相关性，为早期正畸治疗提供科学依据。
按照世界卫生组织口腔健康调查（基本方法），对1803名8-9岁儿童进行口腔健康状况调查。采用SPSS 17.0软件包进行统计分析。
1803名小学生中1322名患有错牙合畸形，受调查儿童错牙合畸形患病率为73.32%。其中，安氏Ⅰ类错牙合畸形519例（39.26%），安氏Ⅱ类错牙合畸形374例（28.29%），安氏Ⅲ类错牙合畸形357例（27.00%），不对称畸形72例（5.45%）。临床表现方面，深覆牙合占37.67%，其次是深覆盖29.19%，牙列拥挤16.94%，反牙合16.03%。龋病患病率为64.23%。其中，男性625例（34.66%），女性532例（29.51%）。
青岛市崂山区小学生混合牙列期错牙合畸形患病率不容乐观，错牙合畸形的发生与龋病密切相关。
