The Behavioral Risk Factor Surveillance System (BRFSS) tracks health conditions and risk behaviors in the United States yearly. State by state data is available.
WONDER (Wide-ranging Online Data for Epidemiologic Research) provides access to a wide variety of public health reports & data systems. Search individual databases or by topic.
Health survey conducted by phone of Washtenaw county residents in 2005 & 2010; includes questions specifically on dental health.
Health Statistics--The Big Picture
If you need to search for a broader range of statistics, use the Health Statistics research guide, a comprehensive list of health statistics of various kinds at the local, state, national, & international levels.