2009 Fiscal Year Final Research Report

Long-term prospective cohort study of the incidence of xerostomia accompanied by aging process and its effect on periodontal disease

Research Project

Project/Area Number	19791633
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Single-year Grants
Research Field	Social dentistry
Research Institution	Niigata University
Principal Investigator	HIROTOMI Toshinobu Niigata University, 医歯学系, 助教 (00345513)
Project Period (FY)	2007 – 2009
Keywords	口腔乾燥 / 唾液 / 歯周病 / コホート研究 / 高齢者
Research Abstract	This epidemiological study investigated the relationship between salivary spinability and xerostomia in an elderly population residing in Niigata City. Furthermore, the relationship between xerostomia and periodontal disease progression was also studied. The survey was conducted in 2007 and 2008. In this study, the 4-year longitudinal data were analyzed by merging data previously obtained in 2004. This study showed that the persistence of high salivary spinability could cause xerostomia. The finding that periodontal disease progression could accompany xerostomia was especially found in elderly subjects with fewer remaining teeth.