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2018 Fiscal Year Final Research Report

Identification of oral health-related risk factors for development of dementia

Research Project

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Project/Area Number 17K17375
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Social dentistry
Research InstitutionKyushu University

Principal Investigator

Takeuchi Kenji  九州大学, 歯学研究院, 共同研究員 (10712680)

Project Period (FY) 2017-04-01 – 2019-03-31
Keywords認知症 / 歯数 / 酸化ストレス / MRI
Outline of Final Research Achievements

This study clarified oral-related risk factors contributing to the onset and progression of dementia in a community-dwelling adults aged 65 years or over in Hisayama town, adjusting for potential confounders. Salivary oxidative stress markers in Alzheimer's disease patients were significantly lower than those in healthy controls. In linear regression models, tooth loss was significantly positively associated with global brain atrophy, but not hippocampal atrophy, one of the morphological features of Alzheimer's disease.

Free Research Field

医歯薬学

Academic Significance and Societal Importance of the Research Achievements

認知症の発症・進行に寄与する口腔関連リスク因子の解明をさらに発展させるため、唾液中の酸化ストレスマーカーを口腔関連の客観的指標として追加し、認知機能低下の客観的指標として核磁気共鳴映像法(MRI)検査に基づく脳萎縮度の判定を採用した点が本研究の学術的新規性と考える。研究成果の社会的意義として、口腔関連指標の中でも特に、歯の喪失は認知症の発症・進行に寄与する可能性が高く、高齢期に先駆けて幼年期・成人期から一貫して歯の喪失予防に努めることが認知症予防に重要であることが示唆された。

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Published: 2020-03-30  

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