3: Periodontal Epidemiology

3

Periodontal epidemiology

Figure 3.1 (a) Definition of epidemiology (Last, 2001). (b) Definitions of epidemiological terms (Last, 2001).

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Figure 3.2 (a) Types of periodontal epidemiology. (b) Descriptive, analytical and pragmatic studies. (c) Cross-sectional and longitudinal studies. (d) Case–control and case–cohort studies. (e) Clinical trial phases. (f) Types of trial.

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Figure 3.3 Common terms in epidemiology.

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Figure 3.4 Attributes of a good periodontal index.

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Figure 3.5 The Gingival Index (Löe & Silness, 1967).

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Figure 3.6 (a) Clinical attachment loss (CAL) and probing depth (PD). (b) CAL and recession.

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Figure 3.7 Factors influencing probing accuracy.

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Figure 3.8 Community Periodontal Index of Treatment Needs (CPITN).

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Figure 3.9 UK national survey (representing population) data, 1998, on the prevalence of: (a) pockets, and (b) clinical attachment loss (CAL).

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Figure 3.10 The prevalence of periodontitis based on: (a) US national survey (representing population) data, 1985–86, and (b) US National Health and Nutrition Examination Surveys (NHANES) data, 1988–94 and 1999–2004.

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Epidemiology is the study of the distribution and determinants of health-related states or events in specified populations, and the application of this study to the control of health problems (Fig. 3.1).

Types of periodontal epidemiology

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Jan 14, 2015 | Posted by in Periodontics | Comments Off on 3: Periodontal Epidemiology
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