Investigation on Prevalence of Malocclusion in Shenyang Area

Objective: To investigate the prevalence of malocclusion in Shenyang area. Methods: Investigated 2 791 children and students in Shenyang area with the standards of idea occlusion. Results: Found that the prevalence of malocclusion was 63.4% , which increased with aging and up to 82.46% in permanent dentition; crowding was the main type of malocclusion, the proportion of class Ⅱ and class Ⅲ malocclusion changed with aging and have reverse tendency; malocclusion did not completely correlated with TMJ diseases. Conclusion: Development has effect on malocclusion: it is important to carry out preventive and interceptive treatment.