The Omega challenge of dental research: a natural dentition for a lifetime.
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D000368:Aged; D000369:Aged, 80 and over; D000375:Aging; D003813:Dentistry; D006801:Humans; D009316:National Institutes of Health (U.S.); D012106:Research; D014076:Tooth Diseases / Q000453:epidemiology; D014481:United States