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Validation of oral status indicators.

J R Jakobsen¹, R J Hunt

¹Preventive and Community Dentistry, College of Dentistry, University of Iowa, Iowa City.

Community Dental Health

|September 1, 1990

Summary

New dental indicators, the Functional Measure Index (FMI) and Tissue Health Index (THI), show greater sensitivity than the traditional DMFT index for assessing oral health status in populations.

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Area of Science:

Dental Public Health
Epidemiology
Oral Health Assessment

Background:

Dental public health relies on epidemiological data like the DMFT index for policy and program planning.
The traditional DMFT index often lacks the sensitivity to detect nuanced differences in oral health between populations.
Alternative measures weighting DMFT components may offer improved dental indicators.

Purpose of the Study:

To evaluate the sensitivity of modified dental indicators, Functional Measure Index (FMI) and Tissue Health Index (THI), compared to DMFT and Dental Health Index (DHI).
To assess the correlation of independent variables with DMFT, FMI, THI, and DHI using stepwise regression.
To determine if FMI and THI can detect changes in oral health over time.

Main Methods:

Utilized data from 797 participants in the 1980 Iowa Survey of Oral Health.
Performed stepwise regression analysis on DMFT, FMI, THI, and DHI with eight independent variables.
Analyzed aggregate data from three national surveys to assess temporal changes.

Main Results:

FMI (R-square 0.37) and THI (R-square 0.36) demonstrated higher correlation with independent variables than DHI (R-square 0.19) and DMFT (R-square 0.12).
FMI and THI proved more sensitive in detecting differences in oral health status.
Calculations on national survey data indicated FMI and THI can track oral health changes over time.

Conclusions:

The FMI and THI are more sensitive dental health indicators than DMFT and DHI.
These modified indices are as easy to measure and calculate as DMFT.
FMI and THI show significant promise as improved indicators for assessing oral health status in public health.

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