Abstract:
OBJECTIVE:The effect of experimental jaw-muscle pain and stress on masticatory muscle activity in TMD-patients has been discussed. Furthermore, associations between TMD and deep bite patients have been studied. Accordingly in the present study, comparison of EMG responses at rest, maximal clenching, during evoked pain and stress between deep bite patients and controls was investigated. DESIGN:In 30 deep bite patients and in 30 sex-/age-matched controls with neutral occlusion EMG activity was recorded bilaterally from masseter and anterior temporalis muscles before and during evoked pain and before and during a stress task. Evoked pain was induced by injections of glutamate into the masseter (local pain) and brachioradialis (remote pain) muscles and resting EMG activity was recorded before and after 1, 2, 3, 4, 5 and 10min. A precision task was used to simulate a stressful condition and EMG activity was recorded twice during the task. Maximal EMG activity was recorded during maximal clenching. RESULTS:Resting and maximal EMG activity were significantly different between groups and age with no gender differences. EMG activity during local pain and during the precision task were significantly different between groups, gender, age and time, whereas no time effect was found for the EMG activity during remote pain. CONCLUSIONS:Patients with deep bite have significantly different jaw motor responses to painful stimulation of the trigeminal region and manual precision tasks suggesting a differential integration of both somatosensory and behavioural stimuli.
journal_name
Arch Oral Bioljournal_title
Archives of oral biologyauthors
Sonnesen L,Svensson Pdoi
10.1016/j.archoralbio.2013.07.003subject
Has Abstractpub_date
2013-10-01 00:00:00pages
1491-7issue
10eissn
0003-9969issn
1879-1506pii
S0003-9969(13)00218-5journal_volume
58pub_type
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doi:10.1016/j.archoralbio.2010.09.005
更新日期:2011-02-01 00:00:00
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pub_type: 杂志文章
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更新日期:1993-08-01 00:00:00
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pub_type: 杂志文章
doi:10.1016/0003-9969(86)90004-x
更新日期:1986-01-01 00:00:00
abstract::Significant differences were found in the electromyographic (EMG) activation between the masseter and temporalis muscles for the leaf gauge (LG), manually manipulated (CR) and neuromuscular (NM) bite positions during maximal static clench. The LG position consistently demonstrated the lowest EMG activity, while the NM...
journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/0003-9969(93)90037-m
更新日期:1993-03-01 00:00:00
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journal_title:Archives of oral biology
pub_type: 杂志文章
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更新日期:2008-08-01 00:00:00
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journal_title:Archives of oral biology
pub_type: 杂志文章
doi:10.1016/j.archoralbio.2011.05.009
更新日期:2011-11-01 00:00:00
abstract::The expression and distribution of inducible nitric oxide synthase (iNOS) was examined in 12 samples of human temporomandibular joint (TMJ) with internal derangement (ID) and four control specimens. In the diseased joints, strong or definite iNOS reactivity was expressed in synovial lining and endothelial cells; weake...
journal_title:Archives of oral biology
pub_type: 杂志文章
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更新日期:2001-01-01 00:00:00
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pub_type: 杂志文章
doi:10.1016/j.archoralbio.2010.07.005
更新日期:2010-11-01 00:00:00