Population data on complete and removable partial prosthodontics in Iowa indicated the following. Denture wearers tend to be persons in the older age groups. The percentage of edentulous persons was lower than that reported nationally in 1971. Of every 1,000 persons, 156 were wearing dentures in one or both arches. Of every 1,000 persons, 53 needed a repair, reline, or replacement of an existing denture. Of every 1,000 persons, 70 needed a denture but were not wearing one. Persons of lower income and education were less likely to seek dental care but had the greatest need for treatment. Persons of lower income and education were at higher risk of having some form of mucosal lesions. The public will be unlikely to make use of dental services to prevent or treat lesions or to service a prosthesis unless they are specifically educated to do so.