Serveur d'exploration sur le patient édenté

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Improved Prefrontal Activity and Chewing Performance as Function of Wearing Denture in Partially Edentulous Elderly Individuals: Functional Near-Infrared Spectroscopy Study

Identifieur interne : 000762 ( Pmc/Curation ); précédent : 000761; suivant : 000763

Improved Prefrontal Activity and Chewing Performance as Function of Wearing Denture in Partially Edentulous Elderly Individuals: Functional Near-Infrared Spectroscopy Study

Auteurs : Kazunobu Kamiya [Japon] ; Noriyuki Narita [Japon] ; Sunao Iwaki [Japon]

Source :

RBID : PMC:4928845

Abstract

The purpose of this study was to elucidate the effects of wearing a denture on prefrontal activity during chewing performance. We specifically examined that activity in 12 elderly edentulous subjects [63.1±6.1 years old (mean ± SD)] and 12 young healthy controls (22.1±2.3 years old) using functional near-infrared spectroscopy (fNIRS) in order to evaluate the quality of prefrontal functionality during chewing performance under the conditions of wearing a denture and tooth loss, and then compared the findings with those of young healthy controls. fNIRS and electromyography were used simultaneously to detect prefrontal and masticatory muscle activities during chewing, while occlusal force and masticatory score were also examined by use of a food intake questionnaire. A significant increase in prefrontal activity was observed during chewing while wearing a denture, which was accompanied by increased masticatory muscle activity, occlusal force, and masticatory score, as compared with the tooth loss condition. Prefrontal activation during chewing while wearing a denture in the elderly subjects was not much different from that in the young controls. In contrast, tooth loss in the elderly group resulted in marked prefrontal deactivation, accompanied by decreased masticatory muscle activity, occlusal force, and masticatory score, as compared with the young controls. We concluded that intrinsic prefrontal activation during chewing with a denture may prevent prefrontal depression induced by tooth loss in elderly edentulous patients.


Url:
DOI: 10.1371/journal.pone.0158070
PubMed: 27362255
PubMed Central: 4928845

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PMC:4928845

Le document en format XML

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<p>The purpose of this study was to elucidate the effects of wearing a denture on prefrontal activity during chewing performance. We specifically examined that activity in 12 elderly edentulous subjects [63.1±6.1 years old (mean ± SD)] and 12 young healthy controls (22.1±2.3 years old) using functional near-infrared spectroscopy (fNIRS) in order to evaluate the quality of prefrontal functionality during chewing performance under the conditions of wearing a denture and tooth loss, and then compared the findings with those of young healthy controls. fNIRS and electromyography were used simultaneously to detect prefrontal and masticatory muscle activities during chewing, while occlusal force and masticatory score were also examined by use of a food intake questionnaire. A significant increase in prefrontal activity was observed during chewing while wearing a denture, which was accompanied by increased masticatory muscle activity, occlusal force, and masticatory score, as compared with the tooth loss condition. Prefrontal activation during chewing while wearing a denture in the elderly subjects was not much different from that in the young controls. In contrast, tooth loss in the elderly group resulted in marked prefrontal deactivation, accompanied by decreased masticatory muscle activity, occlusal force, and masticatory score, as compared with the young controls. We concluded that intrinsic prefrontal activation during chewing with a denture may prevent prefrontal depression induced by tooth loss in elderly edentulous patients.</p>
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<article-title>Improved Prefrontal Activity and Chewing Performance as Function of Wearing Denture in Partially Edentulous Elderly Individuals: Functional Near-Infrared Spectroscopy Study</article-title>
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<contrib-group>
<contrib contrib-type="author">
<name>
<surname>Kamiya</surname>
<given-names>Kazunobu</given-names>
</name>
<xref ref-type="aff" rid="aff001">
<sup>1</sup>
</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Narita</surname>
<given-names>Noriyuki</given-names>
</name>
<xref ref-type="aff" rid="aff001">
<sup>1</sup>
</xref>
<xref ref-type="corresp" rid="cor001">*</xref>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Iwaki</surname>
<given-names>Sunao</given-names>
</name>
<xref ref-type="aff" rid="aff002">
<sup>2</sup>
</xref>
</contrib>
</contrib-group>
<aff id="aff001">
<label>1</label>
<addr-line>Department of Removable Prosthodontics, Nihon University School of Dentistry at Matsudo, Chiba, Japan</addr-line>
</aff>
<aff id="aff002">
<label>2</label>
<addr-line>Automotive Human Factors Research Center, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba Central 6, Ibaraki, Japan</addr-line>
</aff>
<contrib-group>
<contrib contrib-type="editor">
<name>
<surname>Bencharit</surname>
<given-names>Sompop</given-names>
</name>
<role>Editor</role>
<xref ref-type="aff" rid="edit1"></xref>
</contrib>
</contrib-group>
<aff id="edit1">
<addr-line>University of North Carolina at Chapel Hill, UNITED STATES</addr-line>
</aff>
<author-notes>
<fn fn-type="conflict" id="coi001">
<p>
<bold>Competing Interests: </bold>
The authors have declared that no competing interests exist.</p>
</fn>
<fn fn-type="con" id="contrib001">
<p>Conceived and designed the experiments: NN. Performed the experiments: KK NN. Analyzed the data: NN KK. Contributed reagents/materials/analysis tools: NN SI. Wrote the paper: NN KK.</p>
</fn>
<corresp id="cor001">* E-mail:
<email>narita.noriyuki@nihon-u.ac.jp</email>
</corresp>
</author-notes>
<pub-date pub-type="epub">
<day>30</day>
<month>6</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="collection">
<year>2016</year>
</pub-date>
<volume>11</volume>
<issue>6</issue>
<elocation-id>e0158070</elocation-id>
<history>
<date date-type="received">
<day>4</day>
<month>1</month>
<year>2016</year>
</date>
<date date-type="accepted">
<day>9</day>
<month>6</month>
<year>2016</year>
</date>
</history>
<permissions>
<copyright-statement>© 2016 Kamiya et al</copyright-statement>
<copyright-year>2016</copyright-year>
<copyright-holder>Kamiya et al</copyright-holder>
<license xlink:href="http://creativecommons.org/licenses/by/4.0/">
<license-p>This is an open access article distributed under the terms of the
<ext-link ext-link-type="uri" xlink:href="http://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution License</ext-link>
, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.</license-p>
</license>
</permissions>
<self-uri content-type="pdf" xlink:href="pone.0158070.pdf"></self-uri>
<abstract>
<p>The purpose of this study was to elucidate the effects of wearing a denture on prefrontal activity during chewing performance. We specifically examined that activity in 12 elderly edentulous subjects [63.1±6.1 years old (mean ± SD)] and 12 young healthy controls (22.1±2.3 years old) using functional near-infrared spectroscopy (fNIRS) in order to evaluate the quality of prefrontal functionality during chewing performance under the conditions of wearing a denture and tooth loss, and then compared the findings with those of young healthy controls. fNIRS and electromyography were used simultaneously to detect prefrontal and masticatory muscle activities during chewing, while occlusal force and masticatory score were also examined by use of a food intake questionnaire. A significant increase in prefrontal activity was observed during chewing while wearing a denture, which was accompanied by increased masticatory muscle activity, occlusal force, and masticatory score, as compared with the tooth loss condition. Prefrontal activation during chewing while wearing a denture in the elderly subjects was not much different from that in the young controls. In contrast, tooth loss in the elderly group resulted in marked prefrontal deactivation, accompanied by decreased masticatory muscle activity, occlusal force, and masticatory score, as compared with the young controls. We concluded that intrinsic prefrontal activation during chewing with a denture may prevent prefrontal depression induced by tooth loss in elderly edentulous patients.</p>
</abstract>
<funding-group>
<award-group id="award001">
<funding-source>
<institution>JSPS KAKENHI</institution>
</funding-source>
<award-id>16591969</award-id>
<principal-award-recipient>
<name>
<surname>Narita</surname>
<given-names>Noriyuki</given-names>
</name>
</principal-award-recipient>
</award-group>
<funding-statement>This work was supported by JSPS KAKENHI Grant Number 16591969,
<ext-link ext-link-type="uri" xlink:href="https://kaken.nii.ac.jp/d/p/16591969.ja.html">https://kaken.nii.ac.jp/d/p/16591969.ja.html</ext-link>
. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.</funding-statement>
</funding-group>
<counts>
<fig-count count="7"></fig-count>
<table-count count="6"></table-count>
<page-count count="21"></page-count>
</counts>
<custom-meta-group>
<custom-meta id="data-availability">
<meta-name>Data Availability</meta-name>
<meta-value>All relevant data are within the paper and its Supporting Information files.</meta-value>
</custom-meta>
</custom-meta-group>
</article-meta>
<notes>
<title>Data Availability</title>
<p>All relevant data are within the paper and its Supporting Information files.</p>
</notes>
</front>
</pmc>
</record>

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