title: An epidemiologic study of deciduous molar relations in preschool children.
abstract: This study indicated that distoclusion decreased significantly with age and was more prevalent in siblings of children with Class II molar relation as compared with the prevalence for the total population. Children of middle socioeconomic status (SES) and girls with Class I molar relation had prevalences of posterior crossbite significantly greater than lower SES children and boys, respectively. Finger habits were highly associated with posterior crossbite (P less than 0.001).
mesh_terms: D000367:Age Factors; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008297:Male; D008310:Malocclusion / Q000453:epidemiology* / Q000473:pathology; D008963:Molar / Q000033:anatomy & histology*; D012737:Sex Factors; D012959:Socioeconomic Factors; D014094:Tooth, Deciduous / Q000033:anatomy & histology*