scholarly journals Reflex Responses of Masseter Muscles Evoked from the Specific Stimulation to Periodontal Mechanoreceptors

1993 ◽  
Vol 11 ◽  
pp. 3-10
Author(s):  
Takahiro SATO ◽  
Timothy S. Miles ◽  
Kemal S. Türker
Keyword(s):  
Reflex Responses ◽  
Periodontal Mechanoreceptors ◽  
Specific Stimulation ◽  
Masseter Muscles

Reflex responses of masseter muscles to sound

2010 ◽  
Vol 121 (10) ◽  
pp. 1690-1699 ◽  
Author(s):  
Franca Deriu ◽  
Elena Giaconi ◽  
John C. Rothwell ◽  
Eusebio Tolu
Keyword(s):  
Reflex Responses ◽  
Masseter Muscles

Relation between perceived stimulus intensity and exteroceptive reflex responses in the human masseter muscles

1999 ◽  
Vol 110 (7) ◽  
pp. 1290-1296 ◽  
Author(s):  
P.O. Hansen ◽  
P. Svensson ◽  
L. Arendt-Nielsen ◽  
T.S. Jensen
Keyword(s):  
Stimulus Intensity ◽  
Reflex Responses ◽  
Masseter Muscles

Are Pain Reports as well as Autonomic and Motor Reflex Responses Changed in Parallel while Ageing?

2004 ◽  
Vol 35 (03) ◽  
Author(s):  
V Mylius ◽  
M Kunz ◽  
K Schepelmann ◽  
S Lautenbacher
Keyword(s):  
Reflex Responses ◽  
Motor Reflex ◽  
Pain Reports

Changes in the muscles of mastication before and after primary stereotactic radiosurgery in patients with idiopathic trigeminal neuralgia

2019 ◽  
pp. 1-8 ◽  
Author(s):  
Nasser Mohammed ◽  
Yi-Chieh Hung ◽  
Thomas J. Eluvathingal Muttikkal ◽  
Roy C. Bliley ◽  
Zhiyuan Xu ◽  
...  
Keyword(s):  
Trigeminal Neuralgia ◽  
Muscle Atrophy ◽  
Motor Neuropathy ◽  
Significant Pain ◽  
Medial Pterygoid ◽  
Before And After ◽  
Pterygoid Muscles ◽  
Masseter Muscles ◽  
Muscles Of Mastication ◽  
New Onset

OBJECTIVEThe motor root of the trigeminal nerve runs close to the sensory root and receives considerable radiation during Gamma Knife radiosurgery (GKRS) for trigeminal neuralgia (TN). The object of this study was to evaluate via MRI the changes in the muscles of mastication before and after upfront GKRS in patients with idiopathic TN.METHODSIn this single-institution retrospective cohort study, all patients with idiopathic unilateral TN treated with primary GKRS at the University of Virginia in the period from 2007 to 2017 were included provided that they had pre- and post-GKRS MRI data. The thicknesses of the temporalis, pterygoid, and masseter muscles were measured on both pre- and post-GKRS MRI in a blinded fashion. Changes in the muscles like fatty infiltration, MRI signal, or atrophy were noted.RESULTSAmong the 68 patients eligible for inclusion in the study, 136 temporalis muscles, 136 medial pterygoid muscles, 136 lateral pterygoid muscles, and 136 masseter muscles were assessed. A subset of patients was found to have muscle atrophy even prior to GKRS. Pre-GKRS atrophy of the masseter, medial pterygoid, lateral pterygoid, and temporalis muscles was seen in 18 (26%), 16 (24%), 9 (13%), and 16 (24%) patients, respectively. Logistic regression analysis showed that distribution of pain in the V3 territory (p = 0.01, OR 5.43, 95% CI 1.46–20.12) and significant pain on chewing (p = 0.02, OR 5.32, 95% CI 1.25–22.48) were predictive of pre-GKRS atrophy. Reversal of atrophy of these muscles occurred after GKRS in a majority of the patients. The incidence of new-onset permanent post-GKRS muscle atrophy was 1.5%. The median follow-up was 39 months (range 6–108 months).CONCLUSIONSA subset of patients with TN with significant pain on chewing have pre-GKRS disuse atrophy of the muscles of mastication. A reversal of the atrophy occurs in a majority of the patients following GKRS. New-onset motor neuropathy post-GKRS was rare.

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