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Critical tooth number without subjective dysphagia.
Geriatr Gerontol Int
October 2011
Fukai Institute of Health Science National Institute of Public Health, Department of Oral Health, Saitama, Japan.
Aim: To assess the critical tooth number (CTN) required for prevention of subjective dysphagia caused by oral impairments and to evaluate the relationship between this CTN and mortality.
Methods: The baseline study was performed with residents aged 40-89years (n=5,643; 2224 men and 3419 women) in Miyako Islands, Okinawa, in 1987. Dental examinations were performed by dentists, and subjective dysphagia was asked.