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LECTURE 3
Measuring Oral Health and Disease
Measuring oral disease:  Morbidity Surveys ,[object Object],[object Object],[object Object],Types of surveys:
Cross-sectional study ,[object Object]
Prevalence of traumatic dental injury 16.5% 14 US Kaste, 1996 17.0% 14 UK O’Brien, 1994 Prevalence Age Country Study
Prevalence of traumatic dental injury 43.8% 14 Newham Marcenes, 202 34.0% 11-14 Salford Hamilton, 1997 Prevalence Age Country Study
Assessing prevalence of traumatic dental injury ,[object Object],[object Object],[object Object],[object Object],[object Object]
Repeated cross-sectional study ,[object Object]
Trends in edentulism in adults 16 yrs +: UK national surveys * * * Projected
Trends in % edentulous: US adults 75+ 13.5m 22.0m
Percent of Ontario children caries free
Mean deft/DMFT scores in Ontario children
Percent of 13-14 yr olds with untreated decay Canadian born versus new immigrants % Time in Canada
Implications of caries trends ,[object Object],[object Object],[object Object]
Prevalence (%) of traumatic dental injury at age 14: Newham, UK Marcenes, 2002
Implications ,[object Object],[object Object],[object Object]
Longitudinal study ,[object Object]
Three year incidence of tooth loss in Ontario adults aged 50 and over Locker et al, 1996 Percent losing one or more teeth: 19.4% Females 27.8% Males 23.2% All subjects
Percent losing one or more teeth by smoking status at baseline
Mean number of teeth lost by smoking status at baseline
Measuring oral disease:  Morbidity Surveys ,[object Object],[object Object],Types of surveys:
Sampling and Estimation Estimates of population values based on samples are always subject to a degree of  error  (sampling error)
Population:  2ft  4ft  5ft  6ft True population mean = 4.25ft Estimates*:   2+4 = 3.0ft     2+5 = 3.5ft 2+6 = 4.0ft   4+5 = 4.5ft   4+6 = 5.0ft 5+6 = 5.5ft *Random samples of 2
Sampling and Estimation ,[object Object],[object Object],[object Object]
Random sample survey of 1000 people: 25% of sample are edentulous Standard error = 1.4% 95% confidence interval = 22.2%-27.8% (25%  +  2 x standard error)
Sampling and Estimation ,[object Object],(95% certain that the prevalence of edentulism in the population lies between 22.2% and 27.8%)
Measuring oral health
Types of outcome measure in medicine and dentistry ,[object Object],[object Object],[object Object]
Types of outcome measure in medicine and dentistry ,[object Object],[object Object],[object Object]
Types of outcome measure in medicine and dentistry ,[object Object],[object Object],[object Object]
Measures of health/quality of life ,[object Object],[object Object]
Disease Health Quality of life Health-related quality of life
W.H.O. definition of health 1948 A state of complete physical, mental and social well-being and not just the absence of illness
Contemporary definition of oral health A standard of health of the oral and related tissues that contributes to overall well-being by enabling individuals to eat, communicate and socialize with others without discomfort and embarrassment, and which allows them to participate fully in their chosen social roles
Biomedical model (Disease) Biopsychosocial model (Disease, functioning, well-being)
[object Object],[object Object]
Oral health status indexes ,[object Object],[object Object],[object Object]
What do they measure? ,[object Object],[object Object]
What do they measure? ,[object Object],[object Object]
What do they measure? ,[object Object],[object Object]
What do they measure? ,[object Object],[object Object]
What do they measure? ,[object Object],[object Object]
Oral Health Impact Profile ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Adults age 50 and over: Percent reporting various problems related to oral disorders 12.4% Felt depressed 24.8% Self-conscious 41.8% Pain with hot/cold 32.5% Difficulty chewing
Percent of dentate and edentulous with various problems
Child Oral Health Quality of Life Questionnaire ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Children aged 11 to 14 yrs: Percent reporting various problems related to oral disorders 45.1% Concerned about what people think 22.9% Argued with family 32.5% Been teased 92.8% Missed school
Emotional well-being and social functioning scores: Children aged 11 –14
[object Object],[object Object]
Single item global ratings ,[object Object],[object Object],[object Object],[object Object]
Uses of measures of oral health status (oral health-related quality of life) ,[object Object],[object Object]
Uses of measures of oral health status (oral health-related quality of life) ,[object Object],[object Object]
Pre and post-treatment OHIP scores of implant and denture patients Awad et al, 2000
Uses of measures of oral health status (oral health-related quality of life) ,[object Object],[object Object],[object Object]
Self-ratings of oral health pre and post-treatment 27.0% 56.9% Fair/poor 30.2% 23.6% Good 42.8% 19.6% Excellent/Very good Post-treatment Pre-treatment

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trauma dental

  • 2. Measuring Oral Health and Disease
  • 3.
  • 4.
  • 5. Prevalence of traumatic dental injury 16.5% 14 US Kaste, 1996 17.0% 14 UK O’Brien, 1994 Prevalence Age Country Study
  • 6. Prevalence of traumatic dental injury 43.8% 14 Newham Marcenes, 202 34.0% 11-14 Salford Hamilton, 1997 Prevalence Age Country Study
  • 7.
  • 8.
  • 9. Trends in edentulism in adults 16 yrs +: UK national surveys * * * Projected
  • 10. Trends in % edentulous: US adults 75+ 13.5m 22.0m
  • 11. Percent of Ontario children caries free
  • 12. Mean deft/DMFT scores in Ontario children
  • 13. Percent of 13-14 yr olds with untreated decay Canadian born versus new immigrants % Time in Canada
  • 14.
  • 15. Prevalence (%) of traumatic dental injury at age 14: Newham, UK Marcenes, 2002
  • 16.
  • 17.
  • 18. Three year incidence of tooth loss in Ontario adults aged 50 and over Locker et al, 1996 Percent losing one or more teeth: 19.4% Females 27.8% Males 23.2% All subjects
  • 19. Percent losing one or more teeth by smoking status at baseline
  • 20. Mean number of teeth lost by smoking status at baseline
  • 21.
  • 22. Sampling and Estimation Estimates of population values based on samples are always subject to a degree of error (sampling error)
  • 23. Population: 2ft 4ft 5ft 6ft True population mean = 4.25ft Estimates*: 2+4 = 3.0ft 2+5 = 3.5ft 2+6 = 4.0ft 4+5 = 4.5ft 4+6 = 5.0ft 5+6 = 5.5ft *Random samples of 2
  • 24.
  • 25. Random sample survey of 1000 people: 25% of sample are edentulous Standard error = 1.4% 95% confidence interval = 22.2%-27.8% (25% + 2 x standard error)
  • 26.
  • 28.
  • 29.
  • 30.
  • 31.
  • 32. Disease Health Quality of life Health-related quality of life
  • 33. W.H.O. definition of health 1948 A state of complete physical, mental and social well-being and not just the absence of illness
  • 34. Contemporary definition of oral health A standard of health of the oral and related tissues that contributes to overall well-being by enabling individuals to eat, communicate and socialize with others without discomfort and embarrassment, and which allows them to participate fully in their chosen social roles
  • 35. Biomedical model (Disease) Biopsychosocial model (Disease, functioning, well-being)
  • 36.
  • 37.
  • 38.
  • 39.
  • 40.
  • 41.
  • 42.
  • 43.
  • 44. Adults age 50 and over: Percent reporting various problems related to oral disorders 12.4% Felt depressed 24.8% Self-conscious 41.8% Pain with hot/cold 32.5% Difficulty chewing
  • 45. Percent of dentate and edentulous with various problems
  • 46.
  • 47. Children aged 11 to 14 yrs: Percent reporting various problems related to oral disorders 45.1% Concerned about what people think 22.9% Argued with family 32.5% Been teased 92.8% Missed school
  • 48. Emotional well-being and social functioning scores: Children aged 11 –14
  • 49.
  • 50.
  • 51.
  • 52.
  • 53. Pre and post-treatment OHIP scores of implant and denture patients Awad et al, 2000
  • 54.
  • 55. Self-ratings of oral health pre and post-treatment 27.0% 56.9% Fair/poor 30.2% 23.6% Good 42.8% 19.6% Excellent/Very good Post-treatment Pre-treatment