Archives of oral biology
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Archives of oral biology · Apr 2007
ReviewPostnatal changes of local neuronal circuits involved in activation of jaw-closing muscles.
Feeding behaviour in mammals changes from suckling to mastication during postnatal development and the neuronal circuits controlling feeding behaviour should change in parallel to the development of orofacial structures. In this review we discuss the location of excitatory premotor neurons for jaw-closing motoneurons (JCMNs) and postnatal changes of excitatory synaptic transmission from the supratrigeminal region (SupV) to JCMNs. ⋯ We also show that the incidence of post-spike afterdepolarization increases during postnatal development, whereas the amplitude and half-duration of the medium-duration afterhyperpolarization decrease with age. Such postnatal changes in synaptic transmission from SupV to JCMNs and membrane properties of JCMNs might be involved in the transition from suckling to mastication.
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Archives of oral biology · Feb 2007
Effects of capsaicin and menthol on oral thermal sensory thresholds.
To determine the long-term effect of capsaicin and short-term effect of menthol on oral thermal thresholds. ⋯ The consumption of foods containing capsaicin and menthol significantly alters thermal sensory thresholds in the oral cavity. Dietary habits should therefore be taken into account when intra-oral thermal thresholds are determined.
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Archives of oral biology · Jan 2007
Inflammatory cell accumulation in traumatic neuromas of the human lingual nerve.
To quantify the accumulation of inflammatory cells in traumatic neuromas of the human lingual nerve, and to establish any correlation with the patients' reported symptoms of dysaesthesia. ⋯ This study has demonstrated the presence of inflammatory cells within traumatic neuromas of the human lingual nerve. These cells were found to be closely associated with regions of viable nerve tissue, but there was no correlation with the patients' clinical symptoms.
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Archives of oral biology · Sep 2006
Comparative StudySleep bruxism and temporomandibular disorder: Clinical and polysomnographic evaluation.
To seek better understanding of chronic musculoskeletal facial pain and its relation to sleep bruxism, by comparing patients with sleep bruxism, with and without temporomandibular disorder. ⋯ The polysomnographic characteristics of patients with sleep bruxism, with and without orofacial pain, are similar. More studies are necessary to clarify the reasons why some sleep bruxism patients develop chronic myofascial pain, and others do not.
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Archives of oral biology · Sep 2006
ReviewMasticatory muscle pain and disordered jaw motor behaviour: Literature review over the past decade.
The clinically important relationship between masticatory muscle pain (MMP) and disordered jaw motor behaviour is subject of this concise, evidence-based review of the literature that was published during the past 10 years. Mainly based on studies that used some sort of experimental MMP (e.g., the intramuscular injection of noxious substances like hypertonic saline), it was concluded that MMP has pronounced effects on jaw motor functions like maximal clenching and mastication. ⋯ Further, MMP was shown to influence the cervical motor system, which may partly explain the mechanism behind the frequently observed co-occurrence of pain in the neck and the jaw. Finally, it was concluded that, even though the evidence is not yet conclusive, also remote pain (non-MMP) can modulate jaw motor behaviour, which indicates the involvement of central mechanisms in this modulation.