Cognitive function and number of teeth in a community-dwelling population in Japan
Identifieur interne : 004768 ( Ncbi/Merge ); précédent : 004767; suivant : 004769Cognitive function and number of teeth in a community-dwelling population in Japan
Auteurs : Yuki Saito [Japon] ; Norio Sugawara [Japon] ; Norio Yasui-Furukori [Japon] ; Ippei Takahashi [Japon] ; Shigeyuki Nakaji [Japon] ; Hiroto Kimura [Japon]Source :
- Annals of General Psychiatry [ 1744-859X ] ; 2013.
Abstract
It has been reported that oral health is poor in elderly populations and is associated with poor cognition and dementia. The objective of this study was to examine the association between tooth loss and cognitive function in a community-dwelling population in Japan.
We examined the association between tooth loss and cognitive function in 462 Japanese community-dwelling individuals. The Mini-Mental State Examination (MMSE) was employed to measure global cognitive status. A multiple logistic regression analysis, with both crude and adjusted conditions for confounding factors, was used to assess the relationship between poor cognition and the number of remaining teeth.
The overall prevalence of poor cognition (MMSE ≤ 23) in this study population was 5.6%. Subjects with poor cognition were significantly older, less educated, scored lower in intellectual activity, and had fewer remaining teeth than those with normal cognition. According to the multiple logistic regression analysis, a lower number of teeth (0–10) was found to be a significant independent risk factor (OR = 20.21, 95% confidence interval = 2.20 to 185.47) of cognitive impairment.
This cross-sectional study on a Japanese community-dwelling population revealed relationships between tooth loss and cognitive function. However, the interpretation of our results was hampered by a lack of data, including socioeconomic status and longitudinal observations. Future research exploring tooth loss and cognitive function is warranted.
Url:
DOI: 10.1186/1744-859X-12-20
PubMed: 23800274
PubMed Central: 3706283
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<author><name sortKey="Kimura, Hiroto" sort="Kimura, Hiroto" uniqKey="Kimura H" first="Hiroto" last="Kimura">Hiroto Kimura</name>
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<front><div type="abstract" xml:lang="en"><sec><title>Background</title>
<p>It has been reported that oral health is poor in elderly populations and is associated with poor cognition and dementia. The objective of this study was to examine the association between tooth loss and cognitive function in a community-dwelling population in Japan.</p>
</sec>
<sec><title>Methods</title>
<p>We examined the association between tooth loss and cognitive function in 462 Japanese community-dwelling individuals. The Mini-Mental State Examination (MMSE) was employed to measure global cognitive status. A multiple logistic regression analysis, with both crude and adjusted conditions for confounding factors, was used to assess the relationship between poor cognition and the number of remaining teeth.</p>
</sec>
<sec><title>Results</title>
<p>The overall prevalence of poor cognition (MMSE ≤ 23) in this study population was 5.6%. Subjects with poor cognition were significantly older, less educated, scored lower in intellectual activity, and had fewer remaining teeth than those with normal cognition. According to the multiple logistic regression analysis, a lower number of teeth (0–10) was found to be a significant independent risk factor (OR = 20.21, 95% confidence interval = 2.20 to 185.47) of cognitive impairment.</p>
</sec>
<sec><title>Conclusions</title>
<p>This cross-sectional study on a Japanese community-dwelling population revealed relationships between tooth loss and cognitive function. However, the interpretation of our results was hampered by a lack of data, including socioeconomic status and longitudinal observations. Future research exploring tooth loss and cognitive function is warranted.</p>
</sec>
</div>
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<pmc article-type="research-article" xml:lang="en"><pmc-dir>properties open_access</pmc-dir>
<front><journal-meta><journal-id journal-id-type="nlm-ta">Ann Gen Psychiatry</journal-id>
<journal-id journal-id-type="iso-abbrev">Ann Gen Psychiatry</journal-id>
<journal-title-group><journal-title>Annals of General Psychiatry</journal-title>
</journal-title-group>
<issn pub-type="epub">1744-859X</issn>
<publisher><publisher-name>BioMed Central</publisher-name>
</publisher>
</journal-meta>
<article-meta><article-id pub-id-type="pmid">23800274</article-id>
<article-id pub-id-type="pmc">3706283</article-id>
<article-id pub-id-type="publisher-id">1744-859X-12-20</article-id>
<article-id pub-id-type="doi">10.1186/1744-859X-12-20</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Primary Research</subject>
</subj-group>
</article-categories>
<title-group><article-title>Cognitive function and number of teeth in a community-dwelling population in Japan</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" id="A1"><name><surname>Saito</surname>
<given-names>Yuki</given-names>
</name>
<xref ref-type="aff" rid="I1">1</xref>
<email>d30_yukisaito@yahoo.co.jp</email>
</contrib>
<contrib contrib-type="author" corresp="yes" id="A2"><name><surname>Sugawara</surname>
<given-names>Norio</given-names>
</name>
<xref ref-type="aff" rid="I2">2</xref>
<email>nsuga3@yahoo.co.jp</email>
</contrib>
<contrib contrib-type="author" id="A3"><name><surname>Yasui-Furukori</surname>
<given-names>Norio</given-names>
</name>
<xref ref-type="aff" rid="I2">2</xref>
<email>yasufuru@cc.hirosaki-u.ac.jp</email>
</contrib>
<contrib contrib-type="author" id="A4"><name><surname>Takahashi</surname>
<given-names>Ippei</given-names>
</name>
<xref ref-type="aff" rid="I3">3</xref>
<email>ippei@cc.hirosaki-u.ac.jp</email>
</contrib>
<contrib contrib-type="author" id="A5"><name><surname>Nakaji</surname>
<given-names>Shigeyuki</given-names>
</name>
<xref ref-type="aff" rid="I3">3</xref>
<email>nakaji@cc.hirosaki-u.ac.jp</email>
</contrib>
<contrib contrib-type="author" id="A6"><name><surname>Kimura</surname>
<given-names>Hiroto</given-names>
</name>
<xref ref-type="aff" rid="I1">1</xref>
<email>doms1@cc.hirosaki-u.ac.jp</email>
</contrib>
</contrib-group>
<aff id="I1"><label>1</label>
Department of Oral and Maxillofacial Surgery, Hirosaki University School of Medicine, Hirosaki 036-8562, Japan</aff>
<aff id="I2"><label>2</label>
Department of Neuropsychiatry, Hirosaki University School of Medicine, Hirosaki 036-8562, Japan</aff>
<aff id="I3"><label>3</label>
Department of Social Medicine, Hirosaki University School of Medicine, Hirosaki 036-8562, Japan</aff>
<pub-date pub-type="collection"><year>2013</year>
</pub-date>
<pub-date pub-type="epub"><day>24</day>
<month>6</month>
<year>2013</year>
</pub-date>
<volume>12</volume>
<fpage>20</fpage>
<lpage>20</lpage>
<history><date date-type="received"><day>29</day>
<month>4</month>
<year>2013</year>
</date>
<date date-type="accepted"><day>5</day>
<month>6</month>
<year>2013</year>
</date>
</history>
<permissions><copyright-statement>Copyright © 2013 Saito et al.; licensee BioMed Central Ltd.</copyright-statement>
<copyright-year>2013</copyright-year>
<copyright-holder>Saito et al.; licensee BioMed Central Ltd.</copyright-holder>
<license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/2.0"><license-p>This is an Open Access article distributed under the terms of the Creative Commons Attribution License (<ext-link ext-link-type="uri" xlink:href="http://creativecommons.org/licenses/by/2.0">http://creativecommons.org/licenses/by/2.0</ext-link>
), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.</license-p>
</license>
</permissions>
<self-uri xlink:href="http://www.annals-general-psychiatry.com/content/12/1/20"></self-uri>
<abstract><sec><title>Background</title>
<p>It has been reported that oral health is poor in elderly populations and is associated with poor cognition and dementia. The objective of this study was to examine the association between tooth loss and cognitive function in a community-dwelling population in Japan.</p>
</sec>
<sec><title>Methods</title>
<p>We examined the association between tooth loss and cognitive function in 462 Japanese community-dwelling individuals. The Mini-Mental State Examination (MMSE) was employed to measure global cognitive status. A multiple logistic regression analysis, with both crude and adjusted conditions for confounding factors, was used to assess the relationship between poor cognition and the number of remaining teeth.</p>
</sec>
<sec><title>Results</title>
<p>The overall prevalence of poor cognition (MMSE ≤ 23) in this study population was 5.6%. Subjects with poor cognition were significantly older, less educated, scored lower in intellectual activity, and had fewer remaining teeth than those with normal cognition. According to the multiple logistic regression analysis, a lower number of teeth (0–10) was found to be a significant independent risk factor (OR = 20.21, 95% confidence interval = 2.20 to 185.47) of cognitive impairment.</p>
</sec>
<sec><title>Conclusions</title>
<p>This cross-sectional study on a Japanese community-dwelling population revealed relationships between tooth loss and cognitive function. However, the interpretation of our results was hampered by a lack of data, including socioeconomic status and longitudinal observations. Future research exploring tooth loss and cognitive function is warranted.</p>
</sec>
</abstract>
</article-meta>
</front>
</pmc>
<affiliations><list><country><li>Japon</li>
</country>
</list>
<tree><country name="Japon"><noRegion><name sortKey="Saito, Yuki" sort="Saito, Yuki" uniqKey="Saito Y" first="Yuki" last="Saito">Yuki Saito</name>
</noRegion>
<name sortKey="Kimura, Hiroto" sort="Kimura, Hiroto" uniqKey="Kimura H" first="Hiroto" last="Kimura">Hiroto Kimura</name>
<name sortKey="Nakaji, Shigeyuki" sort="Nakaji, Shigeyuki" uniqKey="Nakaji S" first="Shigeyuki" last="Nakaji">Shigeyuki Nakaji</name>
<name sortKey="Sugawara, Norio" sort="Sugawara, Norio" uniqKey="Sugawara N" first="Norio" last="Sugawara">Norio Sugawara</name>
<name sortKey="Takahashi, Ippei" sort="Takahashi, Ippei" uniqKey="Takahashi I" first="Ippei" last="Takahashi">Ippei Takahashi</name>
<name sortKey="Yasui Furukori, Norio" sort="Yasui Furukori, Norio" uniqKey="Yasui Furukori N" first="Norio" last="Yasui-Furukori">Norio Yasui-Furukori</name>
</country>
</tree>
</affiliations>
</record>
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