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From Mouth to Brain: Tooth Loss and Cognitive Impairment

  • Dan G. Blazer
    Correspondence
    Send correspondence and reprint requests to Dan G. Blazer, M.D., Ph.D., JP Gibbons Professor Emeritus of Psychiatry and Behavioral Sciences, Duke University School of Medicine, 203 Midenhall Way, Cary, NC 27513.
    Affiliations
    JP Gibbons Professor Emeritus of Psychiatry and Behavioral Sciences, Duke University School of Medicine, Cary, NC
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      The association between poor dentation and physical health problems has been known for decades, yet is underappreciated by the medical community.
      • Stuart J
      • Hoang H
      • Crocombe L
      • et al.
      Relationship between dental personnel and on-dental primary health care providers in rural and remote Queensland, Austroa: dental perspectives.
      The medical and dental professions have largely worked in parallel, yet barely recognizing that they are working on the same body with the many pathophysiological connections, for example, cardiac disease and psychiatric disorders. A review of past issues of the American Journal of Geriatric Psychiatry identified one paper published in a supplement, in which oral health was included in the title.
      • Reinhardt Jr., M
      • Le Hoe
      • Gofman Y
      • et al.
      Oral health status and associated factors in minority adults with neurocognitive disorders.
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      References

        • Stuart J
        • Hoang H
        • Crocombe L
        • et al.
        Relationship between dental personnel and on-dental primary health care providers in rural and remote Queensland, Austroa: dental perspectives.
        BMC Oral Health. 2007; https://doi.org/10.1186/s12903-017-0389-y
        • Reinhardt Jr., M
        • Le Hoe
        • Gofman Y
        • et al.
        Oral health status and associated factors in minority adults with neurocognitive disorders.
        Am J Geriatr Psychiatry. 2014.; 22 (Supplement S68–S69 Published in issue: March)
        • Matsuyama Y
        • Fujiwara1 T
        • Murayama H
        • et al.
        Differences in brain volume by tooth loss and cognitive function in older Japanese adults.
        Am J Geriatr Psychiatry. 2022; 30: 1271-1279
        • Cerutti-Kopplin D.
        • Feine J.
        • Padilha D.M.
        • et al.
        Tooth loss increases the risk of diminished cognitive function: a systematic review and meta-analysis.
        JDR Clini Translat Res. 2016; 1: 10-19
        • Li J
        • Xu H
        • Pan W
        • et al.
        Association between tooth loss and cognitive decline: A 13-year longitudinal study of Chinese older adults.
        PLoS One. February 3, 2017; 12 (doi: 10.1371)e0171404

      Linked Article

      • Differences in Brain Volume by Tooth Loss and Cognitive Function in Older Japanese Adults
        The American Journal of Geriatric PsychiatryVol. 30Issue 12
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          The global number of people living with dementia has been rising by population aging. In the last 25 years, the number of people with dementia doubled, and 50 million people live with dementia.1 By 2050, it is estimated that the number of dementia will increase by three times and reach 150 million.2 Modifiable risk factors, including education, lifestyles, and social networks, reportedly contribute to 40% of dementia onset.3 It is anticipated to prevent or delay the onset of dementia by addressing the modifiable risk factors.
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