title: Tooth loss and cardiovascular disease mortality risk--results from the Scottish Health Survey.
abstract: BACKGROUND
  Tooth loss is associated with increased cardiovascular disease (CVD) mortality risk. This association may however be due to residual confounding. We aimed to assess whether tooth loss is associated with specific CVD mortality endpoints in a national population sample adjusting for potential confounders.
  
  
  RESULTS
  We used a prospective cohort design and data from the Scottish Health Survey. We combined data from surveys in 1995, 1998, 2003 and linked this to mortality records. Dental status was classified through self-reports as natural teeth only, natural teeth and dentures, and no natural teeth (edentate). Cox proportional hazards models were used to estimate risk of CVD mortality by dental status adjusting for potential confounders. The sample consisted of 12871 participants. They were followed for 8.0 (SD: 3.3) years. During 103173 person-years, there were 1480 cases of all-cause mortality, 498 of CVD, and 515 of cancer. After adjusting for demographic, socio-economic, behavioural and health status, edentate subjects had significantly higher risk of all-cause (HR, 1.30; 95% CI, 1.12,1.50) and CVD mortality (HR, 1.49; 95% CI, 1.16,1.92) compared to subjects with natural teeth only. Dental status was not significantly associated with cancer mortality in fully adjusted analysis. Further analysis for CVD mortality showed that in the fully adjusted model, edentate subjects had 2.97 (95% CI, 1.46, 6.05) times higher risk for stroke-related mortality.
  
  
  CONCLUSIONS
  In a national population sample of Scottish adults, being edentate was an independent predictor of total CVD mortality, although this was mainly driven by fatal stroke events.
authors.affiliation: Department of Epidemiology and Public Health, University College London, London, United Kingdom. r.watt@ucl.ac.uk
authors.forename: Richard G
authors.initials: RG
authors.lastname: Watt
authors.forename: Georgios
authors.initials: G
authors.lastname: Tsakos
authors.forename: Cesar
authors.initials: C
authors.lastname: de Oliveira
authors.forename: Mark
authors.initials: M
authors.lastname: Hamer
mesh_terms: D002318:Cardiovascular Diseases / Q000150:complications* / Q000401:mortality*; D005260:Female; D006306:Health Surveys / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D008875:Middle Aged; D016016:Proportional Hazards Models; D012307:Risk Factors; D012606:Scotland / Q000453:epidemiology; D016019:Survival Analysis; D016388:Tooth Loss / Q000150:complications* / Q000453:epidemiology*