International Endodontic Journal · 2007 · 86 citations · 32 references
* The prevalence of apical periodontitis and the frequency of root-filled teeth with apical periodontitis were lower than in comparable populations in other countries. * The number of root-filled teeth was comparable to that found in other epidemiologic studies.
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A Simple Method for the Analysis of Clustered Binary Data
J. N. K. Rao, A. J. Scott · Biometrics · 1992 · 686 citations