[Short-latency responses of jaw-movements to loading and unloading in complete denture wearers].
Identifieur interne : 004475 ( PubMed/Curation ); précédent : 004474; suivant : 004476[Short-latency responses of jaw-movements to loading and unloading in complete denture wearers].
Auteurs : S. KobayashiSource :
- Kokubyo Gakkai zasshi. The Journal of the Stomatological Society, Japan [ 0300-9149 ] ; 1994.
Descripteurs français
- KwdFr :
- MESH :
- physiologie : Mastication, Muscles masticateurs, Mécanorécepteurs.
- physiopathologie : Mâchoire édentée.
- Adulte, Humains, Prothèse dentaire complète, Sujet âgé, Sujet âgé de 80 ans ou plus, Électromyographie.
English descriptors
- KwdEn :
- MESH :
- physiology : Mastication, Masticatory Muscles, Mechanoreceptors.
- physiopathology : Jaw, Edentulous.
- Adult, Aged, Aged, 80 and over, Denture, Complete, Electromyography, Humans.
Abstract
The reaction of the masseter muscles was studied by giving various loads to the mandible. Five dentulous volunteers and five edentulous patients participated in this study. They were asked to bite two bars in which the upper was immovable and the lower was connected with the torquemotor and to maintain the mandibular position although their mandibles were given the load changes. The load changes corresponded to the food consistency and were performed by the torquemotor rapidly. When the load force increased rapidly, the full-rectified electromyographic activity of the masseter muscle was facilitated 7.5-9.4 ms in the dentulous and 9.3-11.7 ms in the edentulous. Similarly, when the load force decrease rapidly, it was depressed to 11.1-12.9 ms and 10.6-16.4 ms, respectively. The number of synapses in the neuronal mechanism of loading and unloading reflexes showed no difference between the edentulous and the dentulous. Therefore, it is clear that the periodontal mechano-receptor does not cause the loading and unloading reflexes. As a result, the author suggests that the main receptor for the rapid masticatory movement should be the jaw-closer muscle spindle, which implicates that the complete denture wearers can masticate various kinds of foods smoothly.
PubMed: 8163884
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S. Kobayashi<affiliation><nlm:affiliation>Department of Geriatric Dentistry, Faculty of Dentistry, Tokyo Medical and Dental University.</nlm:affiliation><wicri:noCountry code="subField">Tokyo Medical and Dental University</wicri:noCountry></affiliation>Le document en format XML
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Kobayashi</name><affiliation><nlm:affiliation>Department of Geriatric Dentistry, Faculty of Dentistry, Tokyo Medical and Dental University.</nlm:affiliation><wicri:noCountry code="subField">Tokyo Medical and Dental University</wicri:noCountry></affiliation></author></analytic><series><title level="j">Kokubyo Gakkai zasshi. The Journal of the Stomatological Society, Japan</title><idno type="ISSN">0300-9149</idno><imprint><date when="1994" type="published">1994</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adult</term><term>Aged</term><term>Aged, 80 and over</term><term>Denture, Complete</term><term>Electromyography</term><term>Humans</term><term>Jaw, Edentulous (physiopathology)</term><term>Mastication (physiology)</term><term>Masticatory Muscles (physiology)</term><term>Mechanoreceptors (physiology)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Adulte</term><term>Humains</term><term>Mastication (physiologie)</term><term>Muscles masticateurs (physiologie)</term><term>Mâchoire édentée (physiopathologie)</term><term>Mécanorécepteurs (physiologie)</term><term>Prothèse dentaire complète</term><term>Sujet âgé</term><term>Sujet âgé de 80 ans ou plus</term><term>Électromyographie</term></keywords><keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Mastication</term><term>Muscles masticateurs</term><term>Mécanorécepteurs</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Mastication</term><term>Masticatory Muscles</term><term>Mechanoreceptors</term></keywords><keywords scheme="MESH" qualifier="physiopathologie" xml:lang="fr"><term>Mâchoire édentée</term></keywords><keywords scheme="MESH" qualifier="physiopathology" xml:lang="en"><term>Jaw, Edentulous</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Adult</term><term>Aged</term><term>Aged, 80 and over</term><term>Denture, Complete</term><term>Electromyography</term><term>Humans</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Adulte</term><term>Humains</term><term>Prothèse dentaire complète</term><term>Sujet âgé</term><term>Sujet âgé de 80 ans ou plus</term><term>Électromyographie</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The reaction of the masseter muscles was studied by giving various loads to the mandible. Five dentulous volunteers and five edentulous patients participated in this study. They were asked to bite two bars in which the upper was immovable and the lower was connected with the torquemotor and to maintain the mandibular position although their mandibles were given the load changes. The load changes corresponded to the food consistency and were performed by the torquemotor rapidly. When the load force increased rapidly, the full-rectified electromyographic activity of the masseter muscle was facilitated 7.5-9.4 ms in the dentulous and 9.3-11.7 ms in the edentulous. Similarly, when the load force decrease rapidly, it was depressed to 11.1-12.9 ms and 10.6-16.4 ms, respectively. The number of synapses in the neuronal mechanism of loading and unloading reflexes showed no difference between the edentulous and the dentulous. Therefore, it is clear that the periodontal mechano-receptor does not cause the loading and unloading reflexes. As a result, the author suggests that the main receptor for the rapid masticatory movement should be the jaw-closer muscle spindle, which implicates that the complete denture wearers can masticate various kinds of foods smoothly.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">8163884</PMID><DateCompleted><Year>1994</Year><Month>05</Month><Day>25</Day></DateCompleted><DateRevised><Year>2006</Year><Month>11</Month><Day>15</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0300-9149</ISSN><JournalIssue CitedMedium="Print"><Volume>61</Volume><Issue>1</Issue><PubDate><Year>1994</Year><Month>Mar</Month></PubDate></JournalIssue><Title>Kokubyo Gakkai zasshi. The Journal of the Stomatological Society, Japan</Title><ISOAbbreviation>Kokubyo Gakkai Zasshi</ISOAbbreviation></Journal><ArticleTitle>[Short-latency responses of jaw-movements to loading and unloading in complete denture wearers].</ArticleTitle><Pagination><MedlinePgn>56-70</MedlinePgn></Pagination><Abstract><AbstractText>The reaction of the masseter muscles was studied by giving various loads to the mandible. Five dentulous volunteers and five edentulous patients participated in this study. They were asked to bite two bars in which the upper was immovable and the lower was connected with the torquemotor and to maintain the mandibular position although their mandibles were given the load changes. The load changes corresponded to the food consistency and were performed by the torquemotor rapidly. When the load force increased rapidly, the full-rectified electromyographic activity of the masseter muscle was facilitated 7.5-9.4 ms in the dentulous and 9.3-11.7 ms in the edentulous. Similarly, when the load force decrease rapidly, it was depressed to 11.1-12.9 ms and 10.6-16.4 ms, respectively. The number of synapses in the neuronal mechanism of loading and unloading reflexes showed no difference between the edentulous and the dentulous. Therefore, it is clear that the periodontal mechano-receptor does not cause the loading and unloading reflexes. As a result, the author suggests that the main receptor for the rapid masticatory movement should be the jaw-closer muscle spindle, which implicates that the complete denture wearers can masticate various kinds of foods smoothly.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Kobayashi</LastName><ForeName>S</ForeName><Initials>S</Initials><AffiliationInfo><Affiliation>Department of Geriatric Dentistry, Faculty of Dentistry, Tokyo Medical and Dental University.</Affiliation></AffiliationInfo></Author></AuthorList><Language>jpn</Language><PublicationTypeList><PublicationType UI="D003160">Comparative Study</PublicationType><PublicationType UI="D004740">English Abstract</PublicationType><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>Japan</Country><MedlineTA>Kokubyo Gakkai Zasshi</MedlineTA><NlmUniqueID>0413677</NlmUniqueID><ISSNLinking>0300-9149</ISSNLinking></MedlineJournalInfo><CitationSubset>D</CitationSubset><CitationSubset>IM</CitationSubset><CitationSubset>S</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000328" MajorTopicYN="N">Adult</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D000368" MajorTopicYN="N">Aged</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D000369" MajorTopicYN="N">Aged, 80 and over</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D003824" MajorTopicYN="N">Denture, Complete</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D004576" MajorTopicYN="N">Electromyography</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D006801" MajorTopicYN="N">Humans</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D007575" MajorTopicYN="N">Jaw, Edentulous</DescriptorName><QualifierName UI="Q000503" MajorTopicYN="Y">physiopathology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008409" MajorTopicYN="N">Mastication</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008410" MajorTopicYN="N">Masticatory Muscles</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="Y">physiology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D008465" MajorTopicYN="N">Mechanoreceptors</DescriptorName><QualifierName UI="Q000502" MajorTopicYN="N">physiology</QualifierName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>1994</Year><Month>3</Month><Day>1</Day></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>1994</Year><Month>3</Month><Day>1</Day><Hour>0</Hour><Minute>1</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>1994</Year><Month>3</Month><Day>1</Day><Hour>0</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">8163884</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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