The Australian 2004–2006 National Survey of Adult Oral Health (NSAOH)
examined 5,505 people selected from all 8 states and territories (Slade et al.,
2007). People aged ≥ 15 yrs (hereafter “adults”) were selected at random from
the population by a stratified, clustered, random sampling procedure. Telephone
interviews of potential participants established eligibility and collected sociodemographic and dental care information. Those with natural teeth were invited
to an oral epidemiological examination, after completion of which they