Specific Diurnal EMG Activity Pattern Observed in Occlusal Collapse Patients: Relationship between Diurnal Bruxism and Tooth Loss Progression
Identifieur interne : 000019 ( Pmc/Curation ); précédent : 000018; suivant : 000020Specific Diurnal EMG Activity Pattern Observed in Occlusal Collapse Patients: Relationship between Diurnal Bruxism and Tooth Loss Progression
Auteurs : Shigehisa Kawakami ; Yohei Kumazaki ; Yosuke Manda ; Kazuhiro Oki ; Shogo MinagiSource :
- PLoS ONE [ 1932-6203 ] ; 2014.
Abstract
The role of parafunctional masticatory muscle activity in tooth loss has not been fully clarified. This study aimed to reveal the characteristic activity of masseter muscles in bite collapse patients while awake and asleep.
Six progressive bite collapse patients (PBC group), six age- and gender-matched control subjects (MC group), and six young control subjects (YC group) were enrolled. Electromyograms (EMG) of the masseter muscles were continuously recorded with an ambulatory EMG recorder while patients were awake and asleep. Diurnal and nocturnal parafunctional EMG activity was classified as phasic, tonic, or mixed using an EMG threshold of 20% maximal voluntary clenching.
Highly extended diurnal phasic activity was observed only in the PBC group. The three groups had significantly different mean diurnal phasic episodes per hour, with 13.29±7.18 per hour in the PBC group, 0.95±0.97 per hour in the MC group, and 0.87±0.98 per hour in the YC group (
Extensive bite loss might be related to diurnal masticatory muscle parafunction but not to parafunction during sleep.
Although mandibular parafunction has been implicated in stomatognathic system breakdown, a causal relationship has not been established because scientific modalities to evaluate parafunctional activity have been lacking.
This study used a newly developed EMG recording system that evaluates masseter muscle activity throughout the day. Our results challenge the stereotypical idea of nocturnal bruxism as a strong destructive force. We found that diurnal phasic masticatory muscle activity was most characteristic in patients with progressive bite collapse.
The incidence of diurnal phasic contractions could be used for the prognostic evaluation of stomatognathic system stability.
Url:
DOI: 10.1371/journal.pone.0101882
PubMed: 25010348
PubMed Central: 4092086
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Specific Diurnal EMG Activity Pattern Observed in Occlusal Collapse Patients: Relationship between Diurnal Bruxism and Tooth Loss Progression</title><author><name sortKey="Kawakami, Shigehisa" sort="Kawakami, Shigehisa" uniqKey="Kawakami S" first="Shigehisa" last="Kawakami">Shigehisa Kawakami</name><affiliation><nlm:aff id="aff1"></nlm:aff></affiliation></author><author><name sortKey="Kumazaki, Yohei" sort="Kumazaki, Yohei" uniqKey="Kumazaki Y" first="Yohei" last="Kumazaki">Yohei Kumazaki</name><affiliation><nlm:aff id="aff1"></nlm:aff></affiliation></author><author><name sortKey="Manda, Yosuke" sort="Manda, Yosuke" uniqKey="Manda Y" first="Yosuke" last="Manda">Yosuke Manda</name><affiliation><nlm:aff id="aff1"></nlm:aff></affiliation></author><author><name sortKey="Oki, Kazuhiro" sort="Oki, Kazuhiro" uniqKey="Oki K" first="Kazuhiro" last="Oki">Kazuhiro Oki</name><affiliation><nlm:aff id="aff1"></nlm:aff></affiliation></author><author><name sortKey="Minagi, Shogo" sort="Minagi, Shogo" uniqKey="Minagi S" first="Shogo" last="Minagi">Shogo Minagi</name><affiliation><nlm:aff id="aff1"></nlm:aff></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">25010348</idno><idno type="pmc">4092086</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4092086</idno><idno type="RBID">PMC:4092086</idno><idno type="doi">10.1371/journal.pone.0101882</idno><date when="2014">2014</date><idno type="wicri:Area/Pmc/Corpus">000019</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Corpus" wicri:corpus="PMC">000019</idno><idno type="wicri:Area/Pmc/Curation">000019</idno><idno type="wicri:explorRef" wicri:stream="Pmc" wicri:step="Curation">000019</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Specific Diurnal EMG Activity Pattern Observed in Occlusal Collapse Patients: Relationship between Diurnal Bruxism and Tooth Loss Progression</title><author><name sortKey="Kawakami, Shigehisa" sort="Kawakami, Shigehisa" uniqKey="Kawakami S" first="Shigehisa" last="Kawakami">Shigehisa Kawakami</name><affiliation><nlm:aff id="aff1"></nlm:aff></affiliation></author><author><name sortKey="Kumazaki, Yohei" sort="Kumazaki, Yohei" uniqKey="Kumazaki Y" first="Yohei" last="Kumazaki">Yohei Kumazaki</name><affiliation><nlm:aff id="aff1"></nlm:aff></affiliation></author><author><name sortKey="Manda, Yosuke" sort="Manda, Yosuke" uniqKey="Manda Y" first="Yosuke" last="Manda">Yosuke Manda</name><affiliation><nlm:aff id="aff1"></nlm:aff></affiliation></author><author><name sortKey="Oki, Kazuhiro" sort="Oki, Kazuhiro" uniqKey="Oki K" first="Kazuhiro" last="Oki">Kazuhiro Oki</name><affiliation><nlm:aff id="aff1"></nlm:aff></affiliation></author><author><name sortKey="Minagi, Shogo" sort="Minagi, Shogo" uniqKey="Minagi S" first="Shogo" last="Minagi">Shogo Minagi</name><affiliation><nlm:aff id="aff1"></nlm:aff></affiliation></author></analytic><series><title level="j">PLoS ONE</title><idno type="eISSN">1932-6203</idno><imprint><date when="2014">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>Aim</title><p>The role of parafunctional masticatory muscle activity in tooth loss has not been fully clarified. This study aimed to reveal the characteristic activity of masseter muscles in bite collapse patients while awake and asleep.</p></sec><sec><title>Materials and Methods</title><p>Six progressive bite collapse patients (PBC group), six age- and gender-matched control subjects (MC group), and six young control subjects (YC group) were enrolled. Electromyograms (EMG) of the masseter muscles were continuously recorded with an ambulatory EMG recorder while patients were awake and asleep. Diurnal and nocturnal parafunctional EMG activity was classified as phasic, tonic, or mixed using an EMG threshold of 20% maximal voluntary clenching.</p></sec><sec><title>Results</title><p>Highly extended diurnal phasic activity was observed only in the PBC group. The three groups had significantly different mean diurnal phasic episodes per hour, with 13.29±7.18 per hour in the PBC group, 0.95±0.97 per hour in the MC group, and 0.87±0.98 per hour in the YC group (<italic>p</italic><0.01). ROC curve analysis suggested that the number of diurnal phasic episodes might be used to predict bite collapsing tooth loss.</p></sec><sec><title>Conclusion</title><p>Extensive bite loss might be related to diurnal masticatory muscle parafunction but not to parafunction during sleep.</p></sec><sec><title>Clinical Relevance: Scientific rationale for study</title><p>Although mandibular parafunction has been implicated in stomatognathic system breakdown, a causal relationship has not been established because scientific modalities to evaluate parafunctional activity have been lacking.</p></sec><sec><title>Principal findings</title><p>This study used a newly developed EMG recording system that evaluates masseter muscle activity throughout the day. Our results challenge the stereotypical idea of nocturnal bruxism as a strong destructive force. We found that diurnal phasic masticatory muscle activity was most characteristic in patients with progressive bite collapse.</p></sec><sec><title>Practical implications</title><p>The incidence of diurnal phasic contractions could be used for the prognostic evaluation of stomatognathic system stability.</p></sec></div></front><back><div1 type="bibliography"><listBibl><biblStruct><analytic><author><name sortKey="Bernhardt, O" uniqKey="Bernhardt O">O Bernhardt</name></author><author><name sortKey="Gesch, D" uniqKey="Gesch D">D Gesch</name></author><author><name sortKey="Look, Jo" uniqKey="Look J">JO Look</name></author><author><name sortKey="Hodges, Js" uniqKey="Hodges J">JS Hodges</name></author><author><name sortKey="Schwahn, C" uniqKey="Schwahn C">C Schwahn</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Kato, T" uniqKey="Kato T">T Kato</name></author><author><name sortKey="Yamaguchi, T" uniqKey="Yamaguchi T">T Yamaguchi</name></author><author><name sortKey="Okura, K" uniqKey="Okura K">K Okura</name></author><author><name sortKey="Abe, S" uniqKey="Abe S">S Abe</name></author><author><name sortKey="Lavigne, Gj" uniqKey="Lavigne G">GJ Lavigne</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Houston, F" uniqKey="Houston F">F Houston</name></author><author><name sortKey="Hanamura, H" uniqKey="Hanamura H">H Hanamura</name></author><author><name sortKey="Carlsson, Ge" uniqKey="Carlsson G">GE Carlsson</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Manfredini, D" uniqKey="Manfredini D">D Manfredini</name></author><author><name sortKey="Winocur, E" uniqKey="Winocur E">E Winocur</name></author><author><name sortKey="Guarda Nardini, L" uniqKey="Guarda Nardini L">L Guarda-Nardini</name></author><author><name sortKey="Lobbezoo, F" uniqKey="Lobbezoo F">F Lobbezoo</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Watanabe, A" uniqKey="Watanabe A">A Watanabe</name></author><author><name sortKey="Kanemura, K" uniqKey="Kanemura K">K Kanemura</name></author><author><name sortKey="Tanabe, N" uniqKey="Tanabe N">N Tanabe</name></author><author><name sortKey="Fujisawa, M" uniqKey="Fujisawa M">M Fujisawa</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Fujisawa, M" uniqKey="Fujisawa M">M Fujisawa</name></author><author><name sortKey="Kanemura, K" uniqKey="Kanemura K">K Kanemura</name></author><author><name sortKey="Tanabe, N" uniqKey="Tanabe N">N Tanabe</name></author><author><name sortKey="Gohdo, Y" uniqKey="Gohdo Y">Y Gohdo</name></author><author><name sortKey="Watanabe, A" uniqKey="Watanabe A">A Watanabe</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Kalaykova, Si" uniqKey="Kalaykova S">SI Kalaykova</name></author><author><name sortKey="Lobbezoo, F" uniqKey="Lobbezoo F">F Lobbezoo</name></author><author><name sortKey="Naeije, M" uniqKey="Naeije M">M Naeije</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Ikebe, K" uniqKey="Ikebe K">K Ikebe</name></author><author><name sortKey="Matsuda, K" uniqKey="Matsuda K">K Matsuda</name></author><author><name sortKey="Murai, S" uniqKey="Murai S">S Murai</name></author><author><name sortKey="Maeda, Y" uniqKey="Maeda Y">Y Maeda</name></author><author><name sortKey="Nokubi, T" uniqKey="Nokubi T">T Nokubi</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Hiltunen, K" uniqKey="Hiltunen K">K Hiltunen</name></author><author><name sortKey="Vehkalahti, Mm" uniqKey="Vehkalahti M">MM Vehkalahti</name></author><author><name sortKey="Peltola, Js" uniqKey="Peltola J">JS Peltola</name></author><author><name sortKey="Ainamo, A" uniqKey="Ainamo A">A Ainamo</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Faul, F" uniqKey="Faul F">F Faul</name></author><author><name sortKey="Erdfelder, E" uniqKey="Erdfelder E">E Erdfelder</name></author><author><name sortKey="Lang, Ag" uniqKey="Lang A">AG Lang</name></author><author><name sortKey="Buchner, A" uniqKey="Buchner A">A Buchner</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Kumazaki, Y" uniqKey="Kumazaki Y">Y Kumazaki</name></author><author><name sortKey="Naito, M" uniqKey="Naito M">M Naito</name></author><author><name sortKey="Kawakami, S" uniqKey="Kawakami S">S Kawakami</name></author><author><name sortKey="Hirata, A" uniqKey="Hirata A">A Hirata</name></author><author><name sortKey="Oki, K" uniqKey="Oki K">K Oki</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Velly Miguel, Am" uniqKey="Velly Miguel A">AM Velly-Miguel</name></author><author><name sortKey="Montplaisir, J" uniqKey="Montplaisir J">J Montplaisir</name></author><author><name sortKey="Rompre, Ph" uniqKey="Rompre P">PH Rompre</name></author><author><name sortKey="Lund, Jp" uniqKey="Lund J">JP Lund</name></author><author><name sortKey="Lavigne, Gj" uniqKey="Lavigne G">GJ Lavigne</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Lavigne, Gj" uniqKey="Lavigne G">GJ Lavigne</name></author><author><name sortKey="Rompre, Ph" uniqKey="Rompre P">PH Rompre</name></author><author><name sortKey="Montplaisir, Jy" uniqKey="Montplaisir J">JY Montplaisir</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Akobeng, Ak" uniqKey="Akobeng A">AK Akobeng</name></author></analytic></biblStruct></listBibl></div1></back></TEI><pmc article-type="research-article"><pmc-dir>properties open_access</pmc-dir>
<front><journal-meta><journal-id journal-id-type="nlm-ta">PLoS One</journal-id><journal-id journal-id-type="iso-abbrev">PLoS ONE</journal-id><journal-id journal-id-type="publisher-id">plos</journal-id><journal-id journal-id-type="pmc">plosone</journal-id><journal-title-group><journal-title>PLoS ONE</journal-title></journal-title-group><issn pub-type="epub">1932-6203</issn><publisher><publisher-name>Public Library of Science</publisher-name><publisher-loc>San Francisco, USA</publisher-loc></publisher></journal-meta><article-meta><article-id pub-id-type="pmid">25010348</article-id><article-id pub-id-type="pmc">4092086</article-id><article-id pub-id-type="publisher-id">PONE-D-14-11912</article-id><article-id pub-id-type="doi">10.1371/journal.pone.0101882</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="Discipline-v2"><subject>Biology and Life Sciences</subject><subj-group><subject>Physiology</subject><subj-group><subject>Electrophysiology</subject><subj-group><subject>Electrophysiological Properties</subject></subj-group></subj-group><subj-group><subject>Muscle Physiology</subject><subj-group><subject>Muscle Functions</subject></subj-group></subj-group></subj-group></subj-group><subj-group subj-group-type="Discipline-v2"><subject>Medicine and Health Sciences</subject><subj-group><subject>Medical Physics</subject></subj-group><subj-group><subject>Oral Medicine</subject><subj-group><subject>Oral Diseases</subject><subj-group><subject>Periodontal Diseases</subject></subj-group></subj-group><subj-group><subject>Dentistry</subject></subj-group></subj-group></subj-group></article-categories><title-group><article-title>Specific Diurnal EMG Activity Pattern Observed in Occlusal Collapse Patients: Relationship between Diurnal Bruxism and Tooth Loss Progression</article-title><alt-title alt-title-type="running-head">Relationship between Diurnal Bruxism and Tooth Loss Progression</alt-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Kawakami</surname><given-names>Shigehisa</given-names></name><xref ref-type="aff" rid="aff1"></xref><xref ref-type="corresp" rid="cor1"><sup>*</sup></xref></contrib><contrib contrib-type="author"><name><surname>Kumazaki</surname><given-names>Yohei</given-names></name><xref ref-type="aff" rid="aff1"></xref></contrib><contrib contrib-type="author"><name><surname>Manda</surname><given-names>Yosuke</given-names></name><xref ref-type="aff" rid="aff1"></xref></contrib><contrib contrib-type="author"><name><surname>Oki</surname><given-names>Kazuhiro</given-names></name><xref ref-type="aff" rid="aff1"></xref></contrib><contrib contrib-type="author"><name><surname>Minagi</surname><given-names>Shogo</given-names></name><xref ref-type="aff" rid="aff1"></xref></contrib></contrib-group><aff id="aff1"><addr-line>Department of Occlusal and Oral Functional Rehabilitation, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan</addr-line></aff><contrib-group><contrib contrib-type="editor"><name><surname>Shi</surname><given-names>Songtao</given-names></name><role>Editor</role><xref ref-type="aff" rid="edit1"></xref></contrib></contrib-group><aff id="edit1"><addr-line>University of Southern California, United States of America</addr-line></aff><author-notes><corresp id="cor1">* E-mail: <email>s-kawa-10@t.okadai.jp</email></corresp><fn fn-type="conflict"><p><bold>Competing Interests: </bold>The authors have declared that no competing interests exist.</p></fn><fn fn-type="con"><p>Conceived and designed the experiments: SK SM. Performed the experiments: SK YK YM SM. Analyzed the data: SK YK YM KO SM. Contributed reagents/materials/analysis tools: SK YK YM KO SM. Contributed to the writing of the manuscript: SK SM. Designed the software used in analysis: SM.</p></fn></author-notes><pub-date pub-type="collection"><year>2014</year></pub-date><pub-date pub-type="epub"><day>10</day><month>7</month><year>2014</year></pub-date><volume>9</volume><issue>7</issue><elocation-id>e101882</elocation-id><history><date date-type="received"><day>18</day><month>3</month><year>2014</year></date><date date-type="accepted"><day>12</day><month>6</month><year>2014</year></date></history><permissions><copyright-year>2014</copyright-year><copyright-holder>Kawakami et al</copyright-holder><license><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><abstract><sec><title>Aim</title><p>The role of parafunctional masticatory muscle activity in tooth loss has not been fully clarified. This study aimed to reveal the characteristic activity of masseter muscles in bite collapse patients while awake and asleep.</p></sec><sec><title>Materials and Methods</title><p>Six progressive bite collapse patients (PBC group), six age- and gender-matched control subjects (MC group), and six young control subjects (YC group) were enrolled. Electromyograms (EMG) of the masseter muscles were continuously recorded with an ambulatory EMG recorder while patients were awake and asleep. Diurnal and nocturnal parafunctional EMG activity was classified as phasic, tonic, or mixed using an EMG threshold of 20% maximal voluntary clenching.</p></sec><sec><title>Results</title><p>Highly extended diurnal phasic activity was observed only in the PBC group. The three groups had significantly different mean diurnal phasic episodes per hour, with 13.29±7.18 per hour in the PBC group, 0.95±0.97 per hour in the MC group, and 0.87±0.98 per hour in the YC group (<italic>p</italic><0.01). ROC curve analysis suggested that the number of diurnal phasic episodes might be used to predict bite collapsing tooth loss.</p></sec><sec><title>Conclusion</title><p>Extensive bite loss might be related to diurnal masticatory muscle parafunction but not to parafunction during sleep.</p></sec><sec><title>Clinical Relevance: Scientific rationale for study</title><p>Although mandibular parafunction has been implicated in stomatognathic system breakdown, a causal relationship has not been established because scientific modalities to evaluate parafunctional activity have been lacking.</p></sec><sec><title>Principal findings</title><p>This study used a newly developed EMG recording system that evaluates masseter muscle activity throughout the day. Our results challenge the stereotypical idea of nocturnal bruxism as a strong destructive force. We found that diurnal phasic masticatory muscle activity was most characteristic in patients with progressive bite collapse.</p></sec><sec><title>Practical implications</title><p>The incidence of diurnal phasic contractions could be used for the prognostic evaluation of stomatognathic system stability.</p></sec></abstract><funding-group><funding-statement>This research was supported by MEXT KAKENHI (grant number 24390433 to SM; <ext-link ext-link-type="uri" xlink:href="http://www.mext.go.jp/english/">http://www.mext.go.jp/english/</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><page-count count="8"></page-count></counts><custom-meta-group><custom-meta id="data-availability"><meta-name>Data Availability</meta-name><meta-value>The authors confirm that all data underlying the findings are fully available without restriction. All relevant data are within the paper.</meta-value></custom-meta></custom-meta-group></article-meta><notes><title>Data Availability</title><p>The authors confirm that all data underlying the findings are fully available without restriction. All relevant data are within the paper.</p></notes></front></pmc></record>Pour manipuler ce document sous Unix (Dilib)
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