title: [Statistical analysis of classification, etiological factors and orthodontic treatment of malocclusion (according to the malocclusion classification by Mao Xiejun].
mesh_terms: D005260:Female; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000145:classification* / Q000209:etiology / Q000628:therapy; D009971:Orthodontics, Corrective