title: Relative contribution of caries and periodontal disease in adult tooth loss for an HMO dental population.
abstract: OBJECTIVE
  This study examined the reasons for tooth loss in an adult population with dental insurance.
  
  
  METHODS
  Computerized records were used to identify Kaiser Permanente Dental Care patients aged 40-69 years who had an extraction during 1992 (n = 1,877). A random sample of 839 dental charts were reviewed.
  
  
  RESULTS
  Slightly more than 51 percent of the teeth were extracted for periodontal disease, 35.4 percent for caries, 9.5 percent for a combination of the two, and 3.5 percent for other reasons. When considering patients as the unit of analysis, 58.4 percent of the patients had an extraction for caries, 39.9 percent for periodontal disease, 5.0 percent for both, and 2.6 percent for other reasons.
  
  
  CONCLUSIONS
  In this population both caries and periodontal disease play a role in tooth loss. For this reason, prevention programs focusing on the prevention of both disease processes should be developed for adults.
authors.affiliation: Oregon Pacific AHEC, Newport 97365, USA.
authors.forename: K R
authors.initials: KR
authors.lastname: Phipps
authors.forename: V J
authors.initials: VJ
authors.lastname: Stevens
mesh_terms: D000328:Adult; D000368:Aged; D001641:Bicuspid; D003481:Cuspid; D003731:Dental Caries / Q000150:complications* / Q000453:epidemiology; D006279:Health Maintenance Organizations / Q000706:statistics & numerical data; D006801:Humans; D007180:Incisor; D007347:Insurance, Dental / Q000706:statistics & numerical data; D008485:Medical Audit; D008875:Middle Aged; D008963:Molar; D009922:Oregon / Q000453:epidemiology; D017063:Outcome Assessment, Health Care; D010510:Periodontal Diseases / Q000150:complications* / Q000453:epidemiology; D014081:Tooth Extraction / Q000706:statistics & numerical data; D016388:Tooth Loss / Q000453:epidemiology / Q000209:etiology*