title: Orthodontic service: survey of need and demand.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009970:Orthodontics; D009971:Orthodontics, Corrective; D000078329:Workforce