Cephalometric analysis of masseter muscle and dentoskeletal morphology in dentate and edentulous humans

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dc.contributor.authorKasai, K.
dc.contributor.authorRichards, L.
dc.contributor.authorKanazawa, E.
dc.contributor.authorIwasawa, T.
dc.date.issued1997
dc.description.abstractA study was done to clarify the attachment position of the superficial masseter muscle and its relationship with craniofacial morphology in dentate and edentulous subjects. Data were obtained from lateral cephalometric radiographs of a total of 39 cadavers in which the superficial masseter muscle had been defined with colloidal barium. Principal component analysis provided evidence that the lower masseter muscle width was associated with the size of the ramus, and related to the position of the anterior margin of the muscle. Linear discriminant function data suggested that ramus width, coronoid height and the distance between the anterior margin of the masseter muscle and the mandibular notch contributed most to the observed difference between dentate and edentulous subjects. The derived function correctly assigned 100% of dentate and 95% of edentulous subjects. The results of this study indicated that a reduction of masticatory function was associated with the position of the anterior border of the masseter muscle insertion and also with differences in ramus dimension, the most significant of which were differences in the coronoid process and gonial angle. In general, age was not a significant determinant of variation in superficial masseter muscle dimensions or orientation.
dc.description.statementofresponsibilityKazutaka Kasai, Lindsay C Richards, Eisaku Kanazawa and Tadamasa Iwasawa
dc.identifier.citationJournal of Oral Science, 1997; 39(2):78-85
dc.identifier.doi10.2334/josnusd1959.39.78
dc.identifier.issn0029-0432
dc.identifier.issn1884-2984
dc.identifier.orcidRichards, L. [0000-0001-5474-6420]
dc.identifier.urihttp://hdl.handle.net/2440/1553
dc.language.isoen
dc.publisherNihon University School of Dentistry
dc.rights© Nihon University School of Dentistry
dc.source.urihttps://www.jstage.jst.go.jp/article/josnusd1959/39/2/39_2_78/_article
dc.subjectMasseter muscle; craniofacial morphology; dentate human; edentulous human
dc.titleCephalometric analysis of masseter muscle and dentoskeletal morphology in dentate and edentulous humans
dc.typeJournal article
pubs.publication-statusPublished

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