[Prevalence of root surface caries in 791 middle-elderly population assessed with Katz index method].
Liu
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D000367:Age Factors; D000368:Aged; D002681:China / Q000453:epidemiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D017213:Root Caries / Q000453:epidemiology*; D012737:Sex Factors; D014080:Tooth Exfoliation / Q000453:epidemiology