Observation of selected dental services under two prepayment mechanisms.
D002140:California; D003365:Costs and Cost Analysis; D003442:Crowns; D003749:Dental Facilities / Q000706:statistics & numerical data; D003777:Dental Prophylaxis; D003778:Dentures; D005381:Financing, Organized; D006124:Group Practice, Dental; D006801:Humans; D007347:Insurance, Dental; D012390:Root Canal Therapy; D014081:Tooth Extraction