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Mandibular Vertical Growth Deficiency After Botulinum-Induced Hypotrophy of Masticatory Closing Muscles in Juvenile Nonhuman Primates

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dc.contributor.author김성택-
dc.contributor.author김학진-
dc.contributor.author이상휘-
dc.date.accessioned2019-07-11T03:32:53Z-
dc.date.available2019-07-11T03:32:53Z-
dc.date.issued2019-
dc.identifier.urihttps://ir.ymlib.yonsei.ac.kr/handle/22282913/170028-
dc.description.abstractThe purpose of this study was to investigate the relationship between masticatory muscular hypotrophy and mandibular growth in juvenile nonhuman primates (cynolmolgus monkeys, Macaca fasicularis). We hypothesized that botulinum toxin (BTX)-induced neuro-muscular junctional block and its resultant hypotrophy of masticatory muscles would produce mandibular growth disturbances in size and shape. Ten male cynomolgus monkeys were divided into three groups: group I (control; n = 3), group II (unilateral BTX; n = 4), and group III (bilateral BTX; n = 3). The unilateral or bilateral muscular hypotrophy of major masticatory closing muscles was induced by synchronous BTX application to masseter, medial pterygoid, and temporal muscle. Mandibular growth was tracked by linear, angular, area and volume measurements using three-dimensional (3D) computed tomography imaging before BTX treatment and after 3 and 6 months. After unilateral hypotrophy of masticatory muscles in group II, vertical growth deficiency was prominent on the BTX side, with compensatory overgrowth on the control side. The bilateral muscular hypotrophy in group III also showed smaller ramal height and width than that of control (group I) and control side (group II). Moreover, ramal sagittal angles (posterior tilt) increased on the BTX side of both groups II and III, but coronal angles (lateral tilt) did so on the BTX side of group II, resulting in asymmetry. The results confirmed our hypothesis that functional activity of masticatory closing muscles is closely related to mandibular growth in size and shape of juvenile nonhuman primates. In addition, the focused growth disturbances on the ramal height and posterior-lateral tilt suggested the possible role of masticatory closing muscles for ramal vertical and angular growth vector of the mandible.-
dc.description.statementOfResponsibilityopen-
dc.languageEnglish-
dc.publisherFrontiers Research Foundation-
dc.relation.isPartOfFRONTIERS IN PHYSIOLOGY-
dc.rightsCC BY-NC-ND 2.0 KR-
dc.rightshttps://creativecommons.org/licenses/by-nc-nd/2.0/kr/-
dc.titleMandibular Vertical Growth Deficiency After Botulinum-Induced Hypotrophy of Masticatory Closing Muscles in Juvenile Nonhuman Primates-
dc.typeArticle-
dc.contributor.collegeCollege of Dentistry (치과대학)-
dc.contributor.departmentDept. of Orofacial Pain and Oral Medicine (구강내과학교실)-
dc.contributor.googleauthorHak-Jin Kim-
dc.contributor.googleauthorHye-Jin Tak-
dc.contributor.googleauthorJoo-Won Moon-
dc.contributor.googleauthorSang-Hoon Kang-
dc.contributor.googleauthorSeong Taek Kim-
dc.contributor.googleauthorJinquan He-
dc.contributor.googleauthorZhenguo Piao-
dc.contributor.googleauthorSang-Hwy Lee-
dc.identifier.doi10.3389/fphys.2019.00496-
dc.contributor.localIdA00588-
dc.contributor.localIdA01094-
dc.contributor.localIdA01094-
dc.contributor.localIdA02839-
dc.contributor.localIdA02839-
dc.relation.journalcodeJ02868-
dc.identifier.eissn1664-042X-
dc.identifier.pmid31080418-
dc.subject.keywordbotulinum toxin-
dc.subject.keywordcomputed tomography-
dc.subject.keywordcraniofacial-
dc.subject.keywordgrowth-
dc.subject.keywordmandible-
dc.subject.keywordmasticatory muscles-
dc.subject.keywordmonkey-
dc.contributor.alternativeNameKim, Seong Taek-
dc.contributor.affiliatedAuthor김성택-
dc.contributor.affiliatedAuthor김학진-
dc.contributor.affiliatedAuthor김학진-
dc.contributor.affiliatedAuthor이상휘-
dc.contributor.affiliatedAuthor이상휘-
dc.citation.volume10-
dc.citation.startPage496-
dc.identifier.bibliographicCitationFRONTIERS IN PHYSIOLOGY, Vol.10 : 496, 2019-
Appears in Collections:
2. College of Dentistry (치과대학) > Dept. of Orofacial Pain and Oral Medicine (구강내과학교실) > 1. Journal Papers
2. College of Dentistry (치과대학) > Dept. of Oral and Maxillofacial Surgery (구강악안면외과학교실) > 1. Journal Papers

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