Effects of improvements of poorly fitting dentures and new dentures on masseter activity during chewing
Identifieur interne : 005B40 ( Istex/Corpus ); précédent : 005B39; suivant : 005B41Effects of improvements of poorly fitting dentures and new dentures on masseter activity during chewing
Auteurs : Neal R. Garrett ; Paul Perez ; Charles Elbert ; Krishan K. KapurSource :
- The Journal of Prosthetic Dentistry [ 0022-3913 ] ; 1996.
English descriptors
- KwdEn :
- Burst duration, Carrot, Centric, Centric occlusion, Dentistry, Denture, Denture modifications, Denture wearers, Fitting dentures, Garrett, Insertion, Mandibular, Masseter, Masseter burst, Masseter muscles, Masticatory, Masticatory performance, Maxillary, Millisecond, Modification, Msec, Muscle activity, Nonpreferred, Nonpreferred side, Occlusal, Occlusal adjustment, Original denture, Original dentures, Postadaptation, Preferred side, Prosthet dent, Prosthetic, Reline, Significant differences, Soft reline, Standard deviations, Stroke duration, Stroke durations, Test foods, Threshold tests, Vertical dimension, Veterans affairs, Wearer.
- Teeft :
- Burst duration, Carrot, Centric, Centric occlusion, Dentistry, Denture, Denture modifications, Denture wearers, Fitting dentures, Garrett, Insertion, Mandibular, Masseter, Masseter burst, Masseter muscles, Masticatory, Masticatory performance, Maxillary, Millisecond, Modification, Msec, Muscle activity, Nonpreferred, Nonpreferred side, Occlusal, Occlusal adjustment, Original denture, Original dentures, Postadaptation, Preferred side, Prosthet dent, Prosthetic, Reline, Significant differences, Soft reline, Standard deviations, Stroke duration, Stroke durations, Test foods, Threshold tests, Vertical dimension, Veterans affairs, Wearer.
Abstract
Abstract: The effects of four sequential modifications to improve occlusion, vertical dimension, retention, and stability of poorly fitting dentures, and of placing new dentures, on the EMG activity were investigated in 21 denture wearers with a mean age of 67.7 years. Electromyographic recordings of right and left masseter muscles were made while the subjects performed masticatory and swallowing threshold tests and applied static guided forces were measured before and after each modification and at three intervals after the delivery of new dentures. A 2-week adaptation period was allowed for each denture modification. Three- and 12-week adaptation periods were allowed for the new dentures. No significant changes were found in guided static bite force or peak bite force during chewing following any modification or insertion of new dentures. Significant decreases (p < 0.05) from the original poorly fitting denture in preferred side and nonpreferred side muscle activity were found for the preferred side tests with both foods after both the correction of occlusion and 3 mm increase in vertical dimension. Concomitant decreases (p < 0.05) in the masseter closing burst and stroke durations were found and contributed to the reduction in masseter muscle effort. Further reductions (p < 0.01) in masseter closing bursts and stroke durations were observed with new dentures. The results revealed that new dentures or the stabilization of poorly fitting dentures through occlusal correction and restoration of occlusal vertical dimension permits patients to use less muscle effort while chewing and maintaining their initial masticatory performance.
Url:
DOI: 10.1016/S0022-3913(96)90545-4
Links to Exploration step
ISTEX:B76EA6B73D9A98F438D9DC7EFF016FA7BB3BC759Le document en format XML
<record><TEI wicri:istexFullTextTei="biblStruct"><teiHeader><fileDesc><titleStmt><title>Effects of improvements of poorly fitting dentures and new dentures on masseter activity during chewing</title><author><name sortKey="Garrett, Neal R" sort="Garrett, Neal R" uniqKey="Garrett N" first="Neal R" last="Garrett">Neal R. Garrett</name><affiliation><mods:affiliation>Department of Veterans Affairs Medical Center, West Los Angeles, Calif., USA</mods:affiliation></affiliation></author><author><name sortKey="Perez, Paul" sort="Perez, Paul" uniqKey="Perez P" first="Paul" last="Perez">Paul Perez</name><affiliation><mods:affiliation>Department of Veterans Affairs Medical Center, West Los Angeles, Calif., USA</mods:affiliation></affiliation></author><author><name sortKey="Elbert, Charles" sort="Elbert, Charles" uniqKey="Elbert C" first="Charles" last="Elbert">Charles Elbert</name><affiliation><mods:affiliation>Department of Veterans Affairs Medical Center, West Los Angeles, Calif., USA</mods:affiliation></affiliation></author><author><name sortKey="Kapur, Krishan K" sort="Kapur, Krishan K" uniqKey="Kapur K" first="Krishan K" last="Kapur">Krishan K. Kapur</name><affiliation><mods:affiliation>Department of Veterans Affairs Medical Center, West Los Angeles, Calif., USA</mods:affiliation></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">ISTEX</idno><idno type="RBID">ISTEX:B76EA6B73D9A98F438D9DC7EFF016FA7BB3BC759</idno><date when="1996" year="1996">1996</date><idno type="doi">10.1016/S0022-3913(96)90545-4</idno><idno type="url">https://api.istex.fr/document/B76EA6B73D9A98F438D9DC7EFF016FA7BB3BC759/fulltext/pdf</idno><idno type="wicri:Area/Istex/Corpus">005B40</idno><idno type="wicri:explorRef" wicri:stream="Istex" wicri:step="Corpus" wicri:corpus="ISTEX">005B40</idno></publicationStmt><sourceDesc><biblStruct><analytic><title level="a">Effects of improvements of poorly fitting dentures and new dentures on masseter activity during chewing</title><author><name sortKey="Garrett, Neal R" sort="Garrett, Neal R" uniqKey="Garrett N" first="Neal R" last="Garrett">Neal R. Garrett</name><affiliation><mods:affiliation>Department of Veterans Affairs Medical Center, West Los Angeles, Calif., USA</mods:affiliation></affiliation></author><author><name sortKey="Perez, Paul" sort="Perez, Paul" uniqKey="Perez P" first="Paul" last="Perez">Paul Perez</name><affiliation><mods:affiliation>Department of Veterans Affairs Medical Center, West Los Angeles, Calif., USA</mods:affiliation></affiliation></author><author><name sortKey="Elbert, Charles" sort="Elbert, Charles" uniqKey="Elbert C" first="Charles" last="Elbert">Charles Elbert</name><affiliation><mods:affiliation>Department of Veterans Affairs Medical Center, West Los Angeles, Calif., USA</mods:affiliation></affiliation></author><author><name sortKey="Kapur, Krishan K" sort="Kapur, Krishan K" uniqKey="Kapur K" first="Krishan K" last="Kapur">Krishan K. Kapur</name><affiliation><mods:affiliation>Department of Veterans Affairs Medical Center, West Los Angeles, Calif., USA</mods:affiliation></affiliation></author></analytic><monogr></monogr><series><title level="j">The Journal of Prosthetic Dentistry</title><title level="j" type="abbrev">YMPR</title><idno type="ISSN">0022-3913</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1996">1996</date><biblScope unit="volume">76</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="394">394</biblScope><biblScope unit="page" to="402">402</biblScope></imprint><idno type="ISSN">0022-3913</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0022-3913</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Burst duration</term><term>Carrot</term><term>Centric</term><term>Centric occlusion</term><term>Dentistry</term><term>Denture</term><term>Denture modifications</term><term>Denture wearers</term><term>Fitting dentures</term><term>Garrett</term><term>Insertion</term><term>Mandibular</term><term>Masseter</term><term>Masseter burst</term><term>Masseter muscles</term><term>Masticatory</term><term>Masticatory performance</term><term>Maxillary</term><term>Millisecond</term><term>Modification</term><term>Msec</term><term>Muscle activity</term><term>Nonpreferred</term><term>Nonpreferred side</term><term>Occlusal</term><term>Occlusal adjustment</term><term>Original denture</term><term>Original dentures</term><term>Postadaptation</term><term>Preferred side</term><term>Prosthet dent</term><term>Prosthetic</term><term>Reline</term><term>Significant differences</term><term>Soft reline</term><term>Standard deviations</term><term>Stroke duration</term><term>Stroke durations</term><term>Test foods</term><term>Threshold tests</term><term>Vertical dimension</term><term>Veterans affairs</term><term>Wearer</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Burst duration</term><term>Carrot</term><term>Centric</term><term>Centric occlusion</term><term>Dentistry</term><term>Denture</term><term>Denture modifications</term><term>Denture wearers</term><term>Fitting dentures</term><term>Garrett</term><term>Insertion</term><term>Mandibular</term><term>Masseter</term><term>Masseter burst</term><term>Masseter muscles</term><term>Masticatory</term><term>Masticatory performance</term><term>Maxillary</term><term>Millisecond</term><term>Modification</term><term>Msec</term><term>Muscle activity</term><term>Nonpreferred</term><term>Nonpreferred side</term><term>Occlusal</term><term>Occlusal adjustment</term><term>Original denture</term><term>Original dentures</term><term>Postadaptation</term><term>Preferred side</term><term>Prosthet dent</term><term>Prosthetic</term><term>Reline</term><term>Significant differences</term><term>Soft reline</term><term>Standard deviations</term><term>Stroke duration</term><term>Stroke durations</term><term>Test foods</term><term>Threshold tests</term><term>Vertical dimension</term><term>Veterans affairs</term><term>Wearer</term></keywords></textClass><langUsage><language ident="en">en</language></langUsage></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Abstract: The effects of four sequential modifications to improve occlusion, vertical dimension, retention, and stability of poorly fitting dentures, and of placing new dentures, on the EMG activity were investigated in 21 denture wearers with a mean age of 67.7 years. Electromyographic recordings of right and left masseter muscles were made while the subjects performed masticatory and swallowing threshold tests and applied static guided forces were measured before and after each modification and at three intervals after the delivery of new dentures. A 2-week adaptation period was allowed for each denture modification. Three- and 12-week adaptation periods were allowed for the new dentures. No significant changes were found in guided static bite force or peak bite force during chewing following any modification or insertion of new dentures. Significant decreases (p < 0.05) from the original poorly fitting denture in preferred side and nonpreferred side muscle activity were found for the preferred side tests with both foods after both the correction of occlusion and 3 mm increase in vertical dimension. Concomitant decreases (p < 0.05) in the masseter closing burst and stroke durations were found and contributed to the reduction in masseter muscle effort. Further reductions (p < 0.01) in masseter closing bursts and stroke durations were observed with new dentures. The results revealed that new dentures or the stabilization of poorly fitting dentures through occlusal correction and restoration of occlusal vertical dimension permits patients to use less muscle effort while chewing and maintaining their initial masticatory performance.</div></front></TEI><istex><corpusName>elsevier</corpusName><keywords><teeft><json:string>denture</json:string><json:string>masseter</json:string><json:string>stroke duration</json:string><json:string>wearer</json:string><json:string>occlusal</json:string><json:string>masticatory</json:string><json:string>original dentures</json:string><json:string>muscle activity</json:string><json:string>denture wearers</json:string><json:string>denture modifications</json:string><json:string>threshold tests</json:string><json:string>fitting dentures</json:string><json:string>burst duration</json:string><json:string>stroke durations</json:string><json:string>prosthetic</json:string><json:string>original denture</json:string><json:string>reline</json:string><json:string>postadaptation</json:string><json:string>millisecond</json:string><json:string>carrot</json:string><json:string>mandibular</json:string><json:string>nonpreferred</json:string><json:string>maxillary</json:string><json:string>dentistry</json:string><json:string>garrett</json:string><json:string>soft reline</json:string><json:string>prosthet dent</json:string><json:string>occlusal adjustment</json:string><json:string>msec</json:string><json:string>insertion</json:string><json:string>masseter muscles</json:string><json:string>masticatory performance</json:string><json:string>veterans affairs</json:string><json:string>nonpreferred side</json:string><json:string>modification</json:string><json:string>masseter burst</json:string><json:string>vertical dimension</json:string><json:string>preferred side</json:string><json:string>standard deviations</json:string><json:string>test foods</json:string><json:string>significant differences</json:string><json:string>centric occlusion</json:string><json:string>centric</json:string><json:string>occlusion</json:string><json:string>denture modification</json:string><json:string>activity variables</json:string><json:string>test appointments</json:string><json:string>reliability coefficient</json:string><json:string>relined dentures</json:string><json:string>masseter activity</json:string><json:string>masseter muscle activity</json:string><json:string>complete denture wearers</json:string></teeft></keywords><author><json:item><name>Neal R Garrett PhD</name><affiliations><json:string>Department of Veterans Affairs Medical Center, West Los Angeles, Calif., USA</json:string></affiliations></json:item><json:item><name>Paul Perez DMD</name><affiliations><json:string>Department of Veterans Affairs Medical Center, West Los Angeles, Calif., USA</json:string></affiliations></json:item><json:item><name>Charles Elbert DDS</name><affiliations><json:string>Department of Veterans Affairs Medical Center, West Los Angeles, Calif., USA</json:string></affiliations></json:item><json:item><name>Krishan K Kapur DMD, MS</name><affiliations><json:string>Department of Veterans Affairs Medical Center, West Los Angeles, Calif., USA</json:string></affiliations></json:item></author><subject><json:item><lang><json:string>eng</json:string></lang><value>Removable prosthodontics</value></json:item></subject><arkIstex>ark:/67375/6H6-MS665KXB-R</arkIstex><language><json:string>eng</json:string></language><originalGenre><json:string>Full-length article</json:string></originalGenre><abstract>Abstract: The effects of four sequential modifications to improve occlusion, vertical dimension, retention, and stability of poorly fitting dentures, and of placing new dentures, on the EMG activity were investigated in 21 denture wearers with a mean age of 67.7 years. Electromyographic recordings of right and left masseter muscles were made while the subjects performed masticatory and swallowing threshold tests and applied static guided forces were measured before and after each modification and at three intervals after the delivery of new dentures. A 2-week adaptation period was allowed for each denture modification. Three- and 12-week adaptation periods were allowed for the new dentures. No significant changes were found in guided static bite force or peak bite force during chewing following any modification or insertion of new dentures. Significant decreases (p > 0.05) from the original poorly fitting denture in preferred side and nonpreferred side muscle activity were found for the preferred side tests with both foods after both the correction of occlusion and 3 mm increase in vertical dimension. Concomitant decreases (p > 0.05) in the masseter closing burst and stroke durations were found and contributed to the reduction in masseter muscle effort. Further reductions (p > 0.01) in masseter closing bursts and stroke durations were observed with new dentures. The results revealed that new dentures or the stabilization of poorly fitting dentures through occlusal correction and restoration of occlusal vertical dimension permits patients to use less muscle effort while chewing and maintaining their initial masticatory performance.</abstract><qualityIndicators><score>8.637</score><pdfWordCount>3673</pdfWordCount><pdfCharCount>33581</pdfCharCount><pdfVersion>1.3</pdfVersion><pdfPageCount>9</pdfPageCount><pdfPageSize>576 x 813 pts</pdfPageSize><refBibsNative>true</refBibsNative><abstractWordCount>247</abstractWordCount><abstractCharCount>1658</abstractCharCount><keywordCount>1</keywordCount></qualityIndicators><title>Effects of improvements of poorly fitting dentures and new dentures on masseter activity during chewing</title><pmid><json:string>8897297</json:string></pmid><pii><json:string>S0022-3913(96)90545-4</json:string></pii><genre><json:string>research-article</json:string></genre><host><title>The Journal of Prosthetic Dentistry</title><language><json:string>unknown</json:string></language><publicationDate>1996</publicationDate><issn><json:string>0022-3913</json:string></issn><pii><json:string>S0022-3913(00)X0072-8</json:string></pii><volume>76</volume><issue>4</issue><pages><first>394</first><last>402</last></pages><genre><json:string>journal</json:string></genre></host><namedEntities><unitex><date><json:string>1000</json:string><json:string>1996</json:string></date><geogName></geogName><orgName><json:string>University of The</json:string><json:string>SAS Institute Inc</json:string><json:string>Coulbourne Instruments</json:string><json:string>Vetter Co.</json:string></orgName><orgName_funder></orgName_funder><orgName_provider></orgName_provider><persName><json:string>K. 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Garrett Oral Biology Research Building 220, Room 122 West Los Angeles V. A. Medical Center 11301 Wilshire Blvd. Los Angeles, CA 90073</note><note type="biography">Director, Oral Biology Research Laboratory; Department of Veterans Affairs Medical Center, West Los Angeles; and Adjunct Assistant Professor of Removable Prosthodontics, School of Dentistry, University of California at Los Angeles, Los Angeles, Calif.</note><affiliation>Reprint requests to: Dr. Neal R. Garrett Oral Biology Research Building 220, Room 122 West Los Angeles V. A. Medical Center 11301 Wilshire Blvd. Los Angeles, CA 90073</affiliation><affiliation>Director, Oral Biology Research Laboratory; Department of Veterans Affairs Medical Center, West Los Angeles; and Adjunct Assistant Professor of Removable Prosthodontics, School of Dentistry, University of California at Los Angeles, Los Angeles, Calif.</affiliation><affiliation>Department of Veterans Affairs Medical Center, West Los Angeles, Calif., USA</affiliation></author><author xml:id="author-0001"><persName><forename type="first">Paul</forename><surname>Perez</surname></persName><roleName type="degree">DMD</roleName><note type="biography">Staff Dentist, Department of Veterans Affairs Medical Center, West Los Angeles; and Adjunct Assistant Professor of Hospital Dentistry, School of Dentistry, University of California at Los Angeles, Los Angeles, Calif.</note><affiliation>Staff Dentist, Department of Veterans Affairs Medical Center, West Los Angeles; and Adjunct Assistant Professor of Hospital Dentistry, School of Dentistry, University of California at Los Angeles, Los Angeles, Calif.</affiliation><affiliation>Department of Veterans Affairs Medical Center, West Los Angeles, Calif., USA</affiliation></author><author xml:id="author-0002"><persName><forename type="first">Charles</forename><surname>Elbert</surname></persName><roleName type="degree">DDS</roleName><note type="biography">Retired Staff Prosthodontist, Department of Veterans Affairs Medical Center, Sepulveda; and Retired Lecturer, School of Dentistry, University of California at Los Angeles, Los Angeles, Calif.</note><affiliation>Retired Staff Prosthodontist, Department of Veterans Affairs Medical Center, Sepulveda; and Retired Lecturer, School of Dentistry, University of California at Los Angeles, Los Angeles, Calif.</affiliation><affiliation>Department of Veterans Affairs Medical Center, West Los Angeles, Calif., USA</affiliation></author><author xml:id="author-0003"><persName><forename type="first">Krishan K</forename><surname>Kapur</surname></persName><roleName type="degree">DMD, MS</roleName><note type="biography">Professor of Removable Prosthodontics, School of Dentistry, University of California at Los Angeles, Los Angeles, and Consultant, Department of Veterans Affairs Medical Center, West Los Angeles.</note><affiliation>Professor of Removable Prosthodontics, School of Dentistry, University of California at Los Angeles, Los Angeles, and Consultant, Department of Veterans Affairs Medical Center, West Los Angeles.</affiliation><affiliation>Department of Veterans Affairs Medical Center, West Los Angeles, Calif., USA</affiliation></author><idno type="istex">B76EA6B73D9A98F438D9DC7EFF016FA7BB3BC759</idno><idno type="DOI">10.1016/S0022-3913(96)90545-4</idno><idno type="PII">S0022-3913(96)90545-4</idno></analytic><monogr><title level="j">The Journal of Prosthetic Dentistry</title><title level="j" type="abbrev">YMPR</title><idno type="pISSN">0022-3913</idno><idno type="PII">S0022-3913(00)X0072-8</idno><imprint><publisher>ELSEVIER</publisher><date type="published" when="1996"></date><biblScope unit="volume">76</biblScope><biblScope unit="issue">4</biblScope><biblScope unit="page" from="394">394</biblScope><biblScope unit="page" to="402">402</biblScope></imprint></monogr></biblStruct></sourceDesc></fileDesc><profileDesc><creation><date>1996</date></creation><langUsage><language ident="en">en</language></langUsage><abstract xml:lang="en"><p>The effects of four sequential modifications to improve occlusion, vertical dimension, retention, and stability of poorly fitting dentures, and of placing new dentures, on the EMG activity were investigated in 21 denture wearers with a mean age of 67.7 years. Electromyographic recordings of right and left masseter muscles were made while the subjects performed masticatory and swallowing threshold tests and applied static guided forces were measured before and after each modification and at three intervals after the delivery of new dentures. A 2-week adaptation period was allowed for each denture modification. Three- and 12-week adaptation periods were allowed for the new dentures. No significant changes were found in guided static bite force or peak bite force during chewing following any modification or insertion of new dentures. Significant decreases (p < 0.05) from the original poorly fitting denture in preferred side and nonpreferred side muscle activity were found for the preferred side tests with both foods after both the correction of occlusion and 3 mm increase in vertical dimension. Concomitant decreases (p < 0.05) in the masseter closing burst and stroke durations were found and contributed to the reduction in masseter muscle effort. Further reductions (p < 0.01) in masseter closing bursts and stroke durations were observed with new dentures. The results revealed that new dentures or the stabilization of poorly fitting dentures through occlusal correction and restoration of occlusal vertical dimension permits patients to use less muscle effort while chewing and maintaining their initial masticatory performance.</p></abstract><textClass><keywords scheme="keyword"><list><head>article-category</head><item><term>Removable prosthodontics</term></item></list></keywords></textClass></profileDesc><revisionDesc><change when="1996">Published</change></revisionDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/B76EA6B73D9A98F438D9DC7EFF016FA7BB3BC759/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Elsevier, elements deleted: tail"><istex:xmlDeclaration>version="1.0" encoding="utf-8"</istex:xmlDeclaration><istex:docType PUBLIC="-//ES//DTD journal article DTD version 4.5.2//EN//XML" URI="art452.dtd" name="istex:docType"></istex:docType><istex:document><converted-article version="4.5.2" docsubtype="fla"><item-info><jid>YMPR</jid><aid>96905454</aid><ce:pii>S0022-3913(96)90545-4</ce:pii><ce:doi>10.1016/S0022-3913(96)90545-4</ce:doi><ce:copyright type="unknown" year="1996"></ce:copyright><ce:doctopics><ce:doctopic><ce:text>Removable prosthodontics</ce:text></ce:doctopic></ce:doctopics></item-info><head><ce:article-footnote><ce:label>☆</ce:label><ce:note-para>Presented in part at the International Association for Dental Research meeting, Acapulco, Mexico, 1991.</ce:note-para></ce:article-footnote><ce:article-footnote><ce:label>☆☆</ce:label><ce:note-para>Supported by Department of Veterans Affairs Medical Research and National Institute of Dental Research Grant number R01DE06638.</ce:note-para></ce:article-footnote><ce:dochead><ce:textfn>Clinical science</ce:textfn></ce:dochead><ce:title>Effects of improvements of poorly fitting dentures and new dentures on masseter activity during chewing</ce:title><ce:author-group><ce:author><ce:given-name>Neal R</ce:given-name><ce:surname>Garrett</ce:surname><ce:degrees>PhD</ce:degrees><ce:cross-ref refid="COR1"><ce:sup>∗</ce:sup></ce:cross-ref><ce:cross-ref refid="AFF1"><ce:sup>1</ce:sup></ce:cross-ref><ce:cross-ref refid="AFF2"><ce:sup>2</ce:sup></ce:cross-ref><ce:cross-ref refid="FN1"><ce:sup>a</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>Paul</ce:given-name><ce:surname>Perez</ce:surname><ce:degrees>DMD</ce:degrees><ce:cross-ref refid="AFF1"><ce:sup>1</ce:sup></ce:cross-ref><ce:cross-ref refid="AFF2"><ce:sup>2</ce:sup></ce:cross-ref><ce:cross-ref refid="FN2"><ce:sup>b</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>Charles</ce:given-name><ce:surname>Elbert</ce:surname><ce:degrees>DDS</ce:degrees><ce:cross-ref refid="AFF1"><ce:sup>1</ce:sup></ce:cross-ref><ce:cross-ref refid="AFF2"><ce:sup>2</ce:sup></ce:cross-ref><ce:cross-ref refid="FN3"><ce:sup>c</ce:sup></ce:cross-ref></ce:author><ce:author><ce:given-name>Krishan K</ce:given-name><ce:surname>Kapur</ce:surname><ce:degrees>DMD, MS</ce:degrees><ce:cross-ref refid="AFF1"><ce:sup>1</ce:sup></ce:cross-ref><ce:cross-ref refid="AFF2"><ce:sup>2</ce:sup></ce:cross-ref><ce:cross-ref refid="FN4"><ce:sup>d</ce:sup></ce:cross-ref></ce:author><ce:affiliation id="AFF1"><ce:label>1</ce:label><ce:textfn>Department of Veterans Affairs Medical Center, West Los Angeles, Calif., USA</ce:textfn></ce:affiliation><ce:affiliation id="AFF2"><ce:label>2</ce:label><ce:textfn>University of California, Los Angeles, Calif., USA</ce:textfn></ce:affiliation><ce:correspondence id="COR1"><ce:label>∗</ce:label><ce:text>Reprint requests to: Dr. Neal R. Garrett Oral Biology Research Building 220, Room 122 West Los Angeles V. A. Medical Center 11301 Wilshire Blvd. Los Angeles, CA 90073</ce:text></ce:correspondence><ce:footnote id="FN1"><ce:label>a</ce:label><ce:note-para>Director, Oral Biology Research Laboratory; Department of Veterans Affairs Medical Center, West Los Angeles; and Adjunct Assistant Professor of Removable Prosthodontics, School of Dentistry, University of California at Los Angeles, Los Angeles, Calif.</ce:note-para></ce:footnote><ce:footnote id="FN2"><ce:label>b</ce:label><ce:note-para>Staff Dentist, Department of Veterans Affairs Medical Center, West Los Angeles; and Adjunct Assistant Professor of Hospital Dentistry, School of Dentistry, University of California at Los Angeles, Los Angeles, Calif.</ce:note-para></ce:footnote><ce:footnote id="FN3"><ce:label>c</ce:label><ce:note-para>Retired Staff Prosthodontist, Department of Veterans Affairs Medical Center, Sepulveda; and Retired Lecturer, School of Dentistry, University of California at Los Angeles, Los Angeles, Calif.</ce:note-para></ce:footnote><ce:footnote id="FN4"><ce:label>d</ce:label><ce:note-para>Professor of Removable Prosthodontics, School of Dentistry, University of California at Los Angeles, Los Angeles, and Consultant, Department of Veterans Affairs Medical Center, West Los Angeles.</ce:note-para></ce:footnote></ce:author-group><ce:abstract><ce:section-title>Abstract</ce:section-title><ce:abstract-sec><ce:simple-para>The effects of four sequential modifications to improve occlusion, vertical dimension, retention, and stability of poorly fitting dentures, and of placing new dentures, on the EMG activity were investigated in 21 denture wearers with a mean age of 67.7 years. Electromyographic recordings of right and left masseter muscles were made while the subjects performed masticatory and swallowing threshold tests and applied static guided forces were measured before and after each modification and at three intervals after the delivery of new dentures. A 2-week adaptation period was allowed for each denture modification. Three- and 12-week adaptation periods were allowed for the new dentures. No significant changes were found in guided static bite force or peak bite force during chewing following any modification or insertion of new dentures. Significant decreases (<ce:italic>p</ce:italic> < 0.05) from the original poorly fitting denture in preferred side and nonpreferred side muscle activity were found for the preferred side tests with both foods after both the correction of occlusion and 3 mm increase in vertical dimension. Concomitant decreases (<ce:italic>p</ce:italic> < 0.05) in the masseter closing burst and stroke durations were found and contributed to the reduction in masseter muscle effort. Further reductions (<ce:italic>p</ce:italic> < 0.01) in masseter closing bursts and stroke durations were observed with new dentures. The results revealed that new dentures or the stabilization of poorly fitting dentures through occlusal correction and restoration of occlusal vertical dimension permits patients to use less muscle effort while chewing and maintaining their initial masticatory performance.</ce:simple-para></ce:abstract-sec></ce:abstract></head></converted-article></istex:document></istex:metadataXml><mods version="3.6"><titleInfo><title>Effects of improvements of poorly fitting dentures and new dentures on masseter activity during chewing</title></titleInfo><titleInfo type="alternative" contentType="CDATA"><title>Effects of improvements of poorly fitting dentures and new dentures on masseter activity during chewing</title></titleInfo><name type="personal"><namePart type="given">Neal R</namePart><namePart type="family">Garrett</namePart><namePart type="termsOfAddress">PhD</namePart><affiliation>Department of Veterans Affairs Medical Center, West Los Angeles, Calif., USA</affiliation><description>Reprint requests to: Dr. Neal R. Garrett Oral Biology Research Building 220, Room 122 West Los Angeles V. A. Medical Center 11301 Wilshire Blvd. Los Angeles, CA 90073</description><description>Director, Oral Biology Research Laboratory; Department of Veterans Affairs Medical Center, West Los Angeles; and Adjunct Assistant Professor of Removable Prosthodontics, School of Dentistry, University of California at Los Angeles, Los Angeles, Calif.</description><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Paul</namePart><namePart type="family">Perez</namePart><namePart type="termsOfAddress">DMD</namePart><affiliation>Department of Veterans Affairs Medical Center, West Los Angeles, Calif., USA</affiliation><description>Staff Dentist, Department of Veterans Affairs Medical Center, West Los Angeles; and Adjunct Assistant Professor of Hospital Dentistry, School of Dentistry, University of California at Los Angeles, Los Angeles, Calif.</description><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Charles</namePart><namePart type="family">Elbert</namePart><namePart type="termsOfAddress">DDS</namePart><affiliation>Department of Veterans Affairs Medical Center, West Los Angeles, Calif., USA</affiliation><description>Retired Staff Prosthodontist, Department of Veterans Affairs Medical Center, Sepulveda; and Retired Lecturer, School of Dentistry, University of California at Los Angeles, Los Angeles, Calif.</description><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Krishan K</namePart><namePart type="family">Kapur</namePart><namePart type="termsOfAddress">DMD, MS</namePart><affiliation>Department of Veterans Affairs Medical Center, West Los Angeles, Calif., USA</affiliation><description>Professor of Removable Prosthodontics, School of Dentistry, University of California at Los Angeles, Los Angeles, and Consultant, Department of Veterans Affairs Medical Center, West Los Angeles.</description><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="research-article" displayLabel="Full-length article" authority="ISTEX" authorityURI="https://content-type.data.istex.fr" valueURI="https://content-type.data.istex.fr/ark:/67375/XTP-1JC4F85T-7">research-article</genre><originInfo><publisher>ELSEVIER</publisher><dateIssued encoding="w3cdtf">1996</dateIssued><copyrightDate encoding="w3cdtf">1996</copyrightDate></originInfo><language><languageTerm type="code" authority="iso639-2b">eng</languageTerm><languageTerm type="code" authority="rfc3066">en</languageTerm></language><abstract lang="en">Abstract: The effects of four sequential modifications to improve occlusion, vertical dimension, retention, and stability of poorly fitting dentures, and of placing new dentures, on the EMG activity were investigated in 21 denture wearers with a mean age of 67.7 years. Electromyographic recordings of right and left masseter muscles were made while the subjects performed masticatory and swallowing threshold tests and applied static guided forces were measured before and after each modification and at three intervals after the delivery of new dentures. A 2-week adaptation period was allowed for each denture modification. Three- and 12-week adaptation periods were allowed for the new dentures. No significant changes were found in guided static bite force or peak bite force during chewing following any modification or insertion of new dentures. Significant decreases (p < 0.05) from the original poorly fitting denture in preferred side and nonpreferred side muscle activity were found for the preferred side tests with both foods after both the correction of occlusion and 3 mm increase in vertical dimension. Concomitant decreases (p < 0.05) in the masseter closing burst and stroke durations were found and contributed to the reduction in masseter muscle effort. Further reductions (p < 0.01) in masseter closing bursts and stroke durations were observed with new dentures. The results revealed that new dentures or the stabilization of poorly fitting dentures through occlusal correction and restoration of occlusal vertical dimension permits patients to use less muscle effort while chewing and maintaining their initial masticatory performance.</abstract><note>Presented in part at the International Association for Dental Research meeting, Acapulco, Mexico, 1991.</note><note>Supported by Department of Veterans Affairs Medical Research and National Institute of Dental Research Grant number R01DE06638.</note><note type="content">Section title: Clinical science</note><subject><genre>article-category</genre><topic>Removable prosthodontics</topic></subject><relatedItem type="host"><titleInfo><title>The Journal of Prosthetic Dentistry</title></titleInfo><titleInfo type="abbreviated"><title>YMPR</title></titleInfo><genre type="journal" authority="ISTEX" authorityURI="https://publication-type.data.istex.fr" valueURI="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</genre><originInfo><publisher>ELSEVIER</publisher><dateIssued encoding="w3cdtf">199610</dateIssued></originInfo><identifier type="ISSN">0022-3913</identifier><identifier type="PII">S0022-3913(00)X0072-8</identifier><part><date>199610</date><detail type="volume"><number>76</number><caption>vol.</caption></detail><detail type="issue"><number>4</number><caption>no.</caption></detail><extent unit="issue-pages"><start>A1</start><end>A20</end></extent><extent unit="issue-pages"><start>A21</start></extent><extent unit="issue-pages"><start>343</start><end>460</end></extent><extent unit="pages"><start>394</start><end>402</end></extent></part></relatedItem><identifier type="istex">B76EA6B73D9A98F438D9DC7EFF016FA7BB3BC759</identifier><identifier type="ark">ark:/67375/6H6-MS665KXB-R</identifier><identifier type="DOI">10.1016/S0022-3913(96)90545-4</identifier><identifier type="PII">S0022-3913(96)90545-4</identifier><recordInfo><recordContentSource authority="ISTEX" authorityURI="https://loaded-corpus.data.istex.fr" valueURI="https://loaded-corpus.data.istex.fr/ark:/67375/XBH-HKKZVM7B-M">elsevier</recordContentSource></recordInfo></mods><json:item><extension>json</extension><original>false</original><mimetype>application/json</mimetype><uri>https://api.istex.fr/document/B76EA6B73D9A98F438D9DC7EFF016FA7BB3BC759/metadata/json</uri></json:item></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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