EdenteV2, Main, Exploration, bibRecord, 005317

Effects of periodontal afferent inputs on corticomotor excitability in humans

Identifieur interne : 005317 ( Main/Exploration ); précédent : 005316; suivant : 005318

Effects of periodontal afferent inputs on corticomotor excitability in humans

Auteurs : Y. Zhang [République populaire de Chine, Danemark] ; S. Boudreau [Danemark, Canada] ; M. Wang [République populaire de Chine] ; K. Wang [Danemark] ; B. Sessle [Canada] ; L. Arendt-Nielsen [Danemark] ; P. Svensson [Danemark]

Source :

Journal of Oral Rehabilitation [ 0305-182X ] ; 2010-01.

RBID : ISTEX:3230194536BFF00460EDCB9BAFCD37826A9798E3

English descriptors

Abstract

Summary The aim of the present study was to determine in humans whether local anaesthesia (LA) or nociceptive stimulation of the periodontal ligaments affects the excitability of the face primary motor cortex (MI) related to the tongue and jaw muscles, as measured by transcranial magnetic stimulation (TMS). Twelve healthy volunteers (11 men, 1 woman, 25·3 ± 4·2 years) participated in two 3‐h sessions separated by 7 days. The LA carbocain or the nociceptive irritant capsaicin was randomly injected into the periodontal ligament of the lower right central incisor. In both sessions, TMS–motor evoked potential (MEP) stimulus–response curves and corticomotor maps were acquired for the tongue and masseter muscles before (baseline) and at 5, 30 and 60 min post‐application of carbocain or capsaicin. Transcranial magnetic stimulation–MEP stimulus–response curves were also acquired at these time points for the first dorsal interosseous (FDI) as an internal control. Burning pain intensity and mechanical sensitivity ratings to a von Frey filament applied to the application site were recorded on an electronic visual analogue scale (VAS). All subjects reported a decreased mechanical sensitivity (anova: P = 0·004) in the LA session and a burning pain sensation (VAS peak pain: 6·4 ± 1·0) in the capsaicin session. No significant changes in cortical excitability of the MI, as reflected by TMS–MEP stimulus–response curves or corticomotor maps for the tongue, masseter or FDI were found between baseline and post‐injection for the LA (anovas: P > 0·22) or capsaicin (anovas: P > 0·16) sessions. These findings suggest that a transient loss or perturbation in periodontal afferent input to the brain from a single incisor is insufficient to cause changes in corticomotor excitability of the face MI, as measured by TMS in humans.

Url:

https://api.istex.fr/document/3230194536BFF00460EDCB9BAFCD37826A9798E3/fulltext/pdf

DOI: 10.1111/j.1365-2842.2009.02016.x

Affiliations:

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Le document en format XML

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<author><name sortKey="Zhang, Y" sort="Zhang, Y" uniqKey="Zhang Y" first="Y." last="Zhang">Y. Zhang</name>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aalborg</term>
<term>Aalborg university</term>
<term>Anaesthesia</term>
<term>Anova</term>
<term>Baseline</term>
<term>Biol</term>
<term>Blackwell publishing</term>
<term>Capsaicin</term>
<term>Capsaicin application</term>
<term>Capsaicin session</term>
<term>Carbocain</term>
<term>Clin neurophysiol</term>
<term>Computer screen</term>
<term>Cortical</term>
<term>Cortical excitability</term>
<term>Corticomotor</term>
<term>Corticomotor control</term>
<term>Corticomotor maps</term>
<term>Dorsal</term>
<term>Dorsal interosseous</term>
<term>Excitability</term>
<term>Gingival sulcus</term>
<term>Human motor cortex</term>
<term>Human tongue musculature</term>
<term>Incisor</term>
<term>Injection site</term>
<term>Interosseous</term>
<term>Ligament</term>
<term>Local anaesthesia</term>
<term>Lower right</term>
<term>Masseter</term>
<term>Masseter muscle</term>
<term>Masseter muscles</term>
<term>Mechanical sensation</term>
<term>Mechanical sensitivity</term>
<term>Meps</term>
<term>Motor cortex</term>
<term>Motor representation</term>
<term>Motor representations</term>
<term>Neurophysiol</term>
<term>Neurosci</term>
<term>Neurosci lett</term>
<term>Noxious</term>
<term>Noxious stimulation</term>
<term>Oral biol</term>
<term>Orofacial</term>
<term>Orofacial pain</term>
<term>Pain intensity</term>
<term>Periodontal</term>
<term>Periodontal ligament</term>
<term>Periodontal ligaments</term>
<term>Present study</term>
<term>Scalp sites</term>
<term>Sessle</term>
<term>Single incisor</term>
<term>Sulcus</term>
<term>Tongue muscle</term>
<term>Tongue muscles</term>
<term>Tongue pain</term>
<term>Transcranial</term>
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<term>Aalborg university</term>
<term>Anaesthesia</term>
<term>Anova</term>
<term>Baseline</term>
<term>Biol</term>
<term>Blackwell publishing</term>
<term>Capsaicin</term>
<term>Capsaicin application</term>
<term>Capsaicin session</term>
<term>Carbocain</term>
<term>Clin neurophysiol</term>
<term>Computer screen</term>
<term>Cortical</term>
<term>Cortical excitability</term>
<term>Corticomotor</term>
<term>Corticomotor control</term>
<term>Corticomotor maps</term>
<term>Dorsal</term>
<term>Dorsal interosseous</term>
<term>Excitability</term>
<term>Gingival sulcus</term>
<term>Human motor cortex</term>
<term>Human tongue musculature</term>
<term>Incisor</term>
<term>Injection site</term>
<term>Interosseous</term>
<term>Ligament</term>
<term>Local anaesthesia</term>
<term>Lower right</term>
<term>Masseter</term>
<term>Masseter muscle</term>
<term>Masseter muscles</term>
<term>Mechanical sensation</term>
<term>Mechanical sensitivity</term>
<term>Meps</term>
<term>Motor cortex</term>
<term>Motor representation</term>
<term>Motor representations</term>
<term>Neurophysiol</term>
<term>Neurosci</term>
<term>Neurosci lett</term>
<term>Noxious</term>
<term>Noxious stimulation</term>
<term>Oral biol</term>
<term>Orofacial</term>
<term>Orofacial pain</term>
<term>Pain intensity</term>
<term>Periodontal</term>
<term>Periodontal ligament</term>
<term>Periodontal ligaments</term>
<term>Present study</term>
<term>Scalp sites</term>
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<term>Single incisor</term>
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<front><div type="abstract">Summary  The aim of the present study was to determine in humans whether local anaesthesia (LA) or nociceptive stimulation of the periodontal ligaments affects the excitability of the face primary motor cortex (MI) related to the tongue and jaw muscles, as measured by transcranial magnetic stimulation (TMS). Twelve healthy volunteers (11 men, 1 woman, 25·3 ± 4·2 years) participated in two 3‐h sessions separated by 7 days. The LA carbocain or the nociceptive irritant capsaicin was randomly injected into the periodontal ligament of the lower right central incisor. In both sessions, TMS–motor evoked potential (MEP) stimulus–response curves and corticomotor maps were acquired for the tongue and masseter muscles before (baseline) and at 5, 30 and 60 min post‐application of carbocain or capsaicin. Transcranial magnetic stimulation–MEP stimulus–response curves were also acquired at these time points for the first dorsal interosseous (FDI) as an internal control. Burning pain intensity and mechanical sensitivity ratings to a von Frey filament applied to the application site were recorded on an electronic visual analogue scale (VAS). All subjects reported a decreased mechanical sensitivity (anova: P = 0·004) in the LA session and a burning pain sensation (VAS peak pain: 6·4 ± 1·0) in the capsaicin session. No significant changes in cortical excitability of the MI, as reflected by TMS–MEP stimulus–response curves or corticomotor maps for the tongue, masseter or FDI were found between baseline and post‐injection for the LA (anovas: P > 0·22) or capsaicin (anovas: P > 0·16) sessions. These findings suggest that a transient loss or perturbation in periodontal afferent input to the brain from a single incisor is insufficient to cause changes in corticomotor excitability of the face MI, as measured by TMS in humans.</div>
</front>
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<name sortKey="Wang, K" sort="Wang, K" uniqKey="Wang K" first="K." last="Wang">K. Wang</name>
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<country name="Canada"><region name="Ontario"><name sortKey="Boudreau, S" sort="Boudreau, S" uniqKey="Boudreau S" first="S." last="Boudreau">S. Boudreau</name>
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Effects of periodontal afferent inputs on corticomotor excitability in humans

Effects of periodontal afferent inputs on corticomotor excitability in humans

Source :

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri