Abstract：
:Recent functional animal studies have reported that the motor control of masticatory muscle function is bilaterally guided by both hemispheres, which may fundamentally differ from the cortical control of limb muscle function. In this study, we investigated whether unilateral cortical brain infarction induces different impairments in masticatory and upper limb motor performance. Evidence of the importance of both hemispheres in controlling masticatory movements would be greater if the masticatory function were shown to be unimpaired in patients with severe hemiplegia. The masticatory function of 16 patients with severe hemiparesis caused by brain infarction in the region of the middle cerebral artery was studied by means of interview, clinical examination, and bite-force measurements. Finger-thumb grip-force measurements and clinical examination of the upper limbs were also performed for evaluation of the effect of infarction on upper limb motor function. Localization of the infarction was confirmed with computer tomography and magnetic resonance imaging. The Scandinavian Stroke Scale demonstrated that each patient had a major unilateral cortical infarction which had caused a marked handicap with a serious impairment of upper limb function on the contralateral side. The clinical examination revealed no major signs of temporomandibular disorders, and the masticatory muscles, when examined by palpation, contracted symmetrically. None of the patients with unilateral brain infarction showed any differences in bite forces between the healthy and paralyzed sides. These results indicate that, in hemiparetic patients, great differences may exist between the motor performances of the masticatory and upper limb muscles. The present investigation clinically illustrates the importance of both hemispheres in the control of masticatory function and movements.
journal_name
J Dent Resjournal_title
Journal of dental researchauthors
Kemppainen P,Waltimo A,Palomäki H,Salonen O,Könönen M,Kaste Mdoi
10.1177/00220345990780120701keywords:
subject
Has Abstractpub_date
1999-12-01 00:00:00pages
1810-4issue
12eissn
0022-0345issn
1544-0591journal_volume
78pub_type
杂志文章abstract：:Although certain bacterial species appear to be risk factors for pain due to odontogenic infections, comparatively little is known about the potential mechanisms mediating this effect. In this study, we tested the hypothesis that trigeminal nociceptive neurons express the TLR4 or CD14 receptors, thus enabling sensory ...
journal_title：Journal of dental research
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abstract：:This case-control study evaluated the association of headache and other co-morbid pain with temporomandibular disorder (TMD) pain in adolescents and explored the temporal co-variance of headache and TMD pain. In a population-based sample of 12- to 19-year-olds, 350 patients with self-reported TMD pain and 350 healthy ...
journal_title：Journal of dental research
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journal_title：Journal of dental research
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abstract：:Although pulp fibroblasts are a major cell type in dental pulp, their roles in microbial recognition and pulpal inflammation are not well-understood. Considering the pivotal role of Toll-like receptors (TLRs) in the recognition of micro-organisms, we hypothesized that TLRs on pulp fibroblasts may induce inflammatory s...
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journal_title：Journal of dental research
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journal_title：Journal of dental research
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journal_title：Journal of dental research
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更新日期：1990-10-01 00:00:00
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pub_type： 杂志文章
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journal_title：Journal of dental research
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更新日期：1980-11-01 00:00:00
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pub_type： 临床试验,杂志文章
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journal_title：Journal of dental research
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journal_title：Journal of dental research
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更新日期：1979-09-01 00:00:00
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journal_title：Journal of dental research
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journal_title：Journal of dental research
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abstract：:The present investigation demonstrates that direct application of a composite resin on an acid-etched, vital dentin surface is hazardous to the pulp in monkey teeth. This indicates that exposed dentin should be protected before treating the tooth with a restorative technique including acid etching. A ca(OH)2-containin...
journal_title：Journal of dental research
pub_type： 杂志文章
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更新日期：1976-03-01 00:00:00
