错畸形是口腔科常见病之一,乳牙期错不但影响咀嚼功能,妨碍食物的消化吸收,更能影响恒牙及颌面部的正常发育,对儿童今后的生长发育造成一定的影响。随着社会的日益发展进步,越来越多的家长开始关注儿童错畸形。大庆市地处我省西部,城市各区间分布较远,近年来随着大庆市城市转型的发展,人口日渐增多,一直没有关于大庆市学龄前儿童错畸形的相关研究。本课题旨在对大庆市学龄前儿童错畸形患病率及发病原因进行调查研究,有计划有针对性 Misdiagnosis is one of the common diseases in dentistry. The deciduous period of deciduous teeth not only affects the masticatory function, impedes the digestion and absorption of food, but also affects the normal development of permanent teeth and maxillofacial region, which will exert some influence on children’s future growth and development. As the society progresses, more and more parents are beginning to pay attention to children’s misconceptions. Daqing City is located in the western part of our province, and the urban areas are far apart. In recent years, with the development of urban transformation in Daqing City and the increasing population, no relevant research has been done on the malformations and deformities of preschool children in Daqing City. The purpose of this project is to investigate the prevalence and incidence of malformation malformations in preschool children in Daqing City, with planned and targeted