Prevalence of malocclusion in mentally retarded young adults.
Occlusal anomalies were recorded in 218 mentally retarded young adults, aged 13-19 yr. Down's syndrome was diagnosed in 37 cases. Among the Down's syndrome individuals 41% had mandibular overjet, 54% mesial molar occlusion, 38% frontal open bite and 65% crossbite. Also, the mentally retarded subjects without Down's syndrome had markedly increased frequencies of some of the anomalies when compared to normal individuals. Thus, 27% had extreme maxillary overjet, 6% mandibular overjet, 17% mesial molar occlusion, 23% frontal open bite and 29% crossbite. Orthodontic dental service for the mentally retarded has been neglected for a long time. Though many factors may contraindicate treatment, it should in many cases be possible to improve the dental situation for this group, thereby helping these patients to a better oral function.
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D000293:Adolescent; D000328:Adult; D003718:Denmark; D004314:Down Syndrome; D005260:Female; D006801:Humans; D008607:Intellectual Disability; D008297:Male; D008310:Malocclusion / Q000145:classification / Q000175:diagnosis / Q000453:epidemiology*