OBJECTIVE
To investigate the longitudinal relationship between the intake of dietary antioxidants and periodontal disease in community-dwelling older Japanese.
DESIGN
A retrospective cohort study, with a follow-up of 2 years (2003-2005). Intakes of dietary antioxidants (vitamin C, vitamin E, α-carotene and β-carotene) were assessed with a validated FFQ. Participants were classified by tertile...