Abstract:

Objective　To reveal malocclusion of primary dentition in the suburb of Chengdu.Methods　Cross-section survey and malocclusion rate calculation were performed.Results　There are 491 children with malocclusion from total 1 279 children; the rate of malocclusion is 38.38%.The most important malocclnsion in primary dentition are over bite(Ⅲ°),anterior cross bite, edge to edge bite,early loss of deciduous teeth, fused teeth.Conclusion　The rate of malocclusion of primary dentition in the suburb of Chengdu is a little bit ligh.Much work should be done to prevent or treat the malocclusion of primary dentition.

Key words: primary dentition, malocclusion, survey