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Masticatory Muscles (3):
Recent article
Masticatory Muscles
Ugeskrift for laeger (172)44 2010
Abstract
Temporomandibular disorders (TMD) are the most common cause of chronic orofacial pain. They are characterized by painful and hampered jaw function. Especially disc displacements, osteoarthritis of the temporomandibular joint and masticatory muscle problems are frequent. The pain is localized in the...
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PMID: 21044561
PDF is available here.
PDF is available here.
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Abstract
The record of electrical activity of elevator muscles in mandible is important for the evaluation of muscular potency and diagnosis of neuromuscular pathologies, which allows prevention and treatment. The aim of this study was to define silent periods (SPs) and the importance in dentistry and compar...
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PMID: 20856068
PDF is available here.
PDF is available here.
Abstract
We tested this hypothesis in nine females and eight males in each of two groups, with and without TMJ disc displacement. Participants provided anatomical data used in a joint load minimization numerical model to predict, and jaw-tracking data used to measure, eminence shapes. Coordinate data (x,y) o...
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PMID: 20554892
PDF is available here.
PDF is available here.
Abstract
We test the hypothesis that cat jaw satellite cells belong to a distinct lineage preprogrammed to express masticatory-specific isoforms of myosin heavy-chain (m-MyHC), myosin-binding protein-C (m-MBP-C), and tropomyosin (m-Tm) during myogenesis in vitro. A monoclonal antibody (MAb) against m-MyHC an...
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PMID: 20354144
PDF is available here.
PDF is available here.
Cells Tissues Organs (192)1 2010
Abstract
The protrogomorph condition of the rodent masticatory apparatus is thought to be present in only one living species, the mountain beaver Aplodontia rufa. The major anatomical difference between protrogomorphs and sciuromorphs is that the relative size of one part of the masseter muscle, the anterior...
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PMID: 20160427
PDF is available here.
PDF is available here.
Abstract
Total buccal crossbites are rare, but, when they occur, they can be extremely difficult to correct, even with surgery and orthodontics. In most patients with in-locking crossbites, the maxillary teeth erupt past their mandibular antagonists, creating severe occlusal difficulties. This article presen...
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PMID: 20451791
PDF is available here.
PDF is available here.
Journal of Experimental Biology (213)Pt 10 2010
Abstract
We recently reported that masticatory myosin heavy chain (MHC-M) is expressed as the exclusive or predominant MHC isoform in masseter and temporalis muscles of several rodent species, contrary to the prevailing dogma that rodents express almost exclusively MHC isoforms that are typically found in fa...
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PMID: 20435813
PDF is available here.
PDF is available here.
Abstract
Patients with TMD often present with complex pain symptoms, which can make it difficult to reach a diagnosis. Usually palpation of the masticatory muscles and TM joints, range of motion testing and imaging are used in the diagnostic process. Sometimes it is necessary to evaluate the jaw moving muscl...
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PMID: 20491230
PDF is available here.
PDF is available here.
Archives of Oral Biology (55)4 2010
Abstract
Dystrophin deficient masticatory muscles contained 11-75% fibres with centralised nuclei. In mdx mice an increased mean fibre diameter was observed as compared to the age-matched control muscles (control vs. mdx; MAS: 33.44+/-0.49microm vs. 37.76+/-0.68microm, p<0.005; TEM: 32.93+/-0.4microm vs. 42....
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PMID: 20207343
PDF is available here.
PDF is available here.
Abstract
The periosteum and Sharpey's fibre extensions occupy the musculoskeletal interface and may be strategic in age-related deterioration. Because of its exceptionally powerful insertions the porcine mandible is an ideal model and its periosteal system was compared in 4 separate regions of adult young (1...
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PMID: 20190387
PDF is available here.
PDF is available here.
l Orthodontie Française (81)1 2010
Abstract
Orthodontists are fully prepared to treat the problems of occlusion that they are called upon to deal with every day. On the other hand temporo-mandibular joint disorders present more obscure difficulties from the point of view of detection and diagnosis as well the management of their treatment. Th...
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PMID: 20359450
PDF is available here.
PDF is available here.
Zhurnal nevrologii i psikhiatrii imeni S.S. Korsakova / Ministerstvo zdravookhraneniia i meditsinskoi promyshlennosti Rossiiskoi Federatsii, Vserossiiskoe obshchestvo nevrologov [i] Vserossiiskoe obshchestvo psikhiatrov (110)9 2010
Abstract
We examined 140 patients, aged from 23 to 47 years, with headache of tension type (HAT). Patients were stratified into two groups: HAT with trigger zones in pericranial muscles (HAT-1) and HAT without those (HAT-2). The study included the detection of pain threshold and pain tolerability in pericran...
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PMID: 21183902
PDF is available here.
PDF is available here.
Abstract
We performed a qualitative and quantitative electrophysiological evaluation of the neuromuscular responses of the trigeminal nervous system. Using the jaw jerk reflex (JJ) and the motor evoked potentials of the trigeminal roots ((b)R-MEPs) tests, we investigated the functional and organic responses...
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PMID: 20594304
PDF is available here.
PDF is available here.
Abstract
We conclude that contractile load generated by masticatory muscles induces local domain-dependent expression of Akt1/PKBalpha as well as activation by dually phosphorylation at Thr308 and Ser473 in muscle fibers at the MTJ areas within muscle-tendon-bone unit....
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PMID: 20454577
PDF is available here.
PDF is available here.
Abstract
There were significant differences among patients with a different degree of clinical dysfunction, as well as between these and the control group. These differences were more important during maximum effort clenching and mastication. During maximum effort clenching, differences in masseteric activit...
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PMID: 19767710
PDF is available here.
PDF is available here.
Abstract
Estimation of the model indicated a good fit to the data and significant associations between stressors, psychological distress, arousal, sleep problems, and pain symptoms. Sleep problems partially mediated the relation between arousal and pain symptoms. Contrary to hypotheses, no association occurr...
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PMID: 20213034
PDF is available here.
PDF is available here.
Stomatologiia (89)3 2010
Abstract
This work deals with the thoughts on the nature and origin of disorders of masticatory muscles and temporor joint. The authors incline to opinion of their psychosomatic origin. In connection with this point of view the methods of investigations were added by the psychosomatic approach (Eysenk, Spilb...
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PMID: 20559238
PDF is available here.
PDF is available here.
Stomatologiia (89)3 2010
Abstract
Functional status of mastication muscles in 44 patients of the age 19-35 years with close position of frontal teeth and different occlusion variants was studied. General electric activity of mastication and temporal muscles (IMPACT, mkV/s), index of proportional activity of symmetric muscles (capita...
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PMID: 20559240
PDF is available here.
PDF is available here.
Stomatologiia (89)1 2010
Abstract
In chronic experiences on 5 rabbits subjected to airmentary deprivation, impulse activity of the chewing muscles before and after the food was given to them was studied. It has been established, that flashes of bruxism nonoperiodically arise in rabbits in conditions of hunger and satiation and are s...
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PMID: 20436404
PDF is available here.
PDF is available here.
Abstract
I and Group II displayed a significant decrease in joint pain (p < 0.01) from T2 and in muscle pain from T1 (p < 0.01) to T6. Subjects in Group I showed a higher decrease in the frequency of joint noise (p < 0.05) from T1 to T6, compared with Group II. At T2 and T3, the patients in Group II reported...
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PMID: 20158007
PDF is available here.
PDF is available here.
Abstract
Magnetization transfer contrast imaging strongly reflects the masticatory muscle edematous changes, possibly leading to masseter muscle pain....
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PMID: 20351512
PDF is available here.
PDF is available here.
Abstract
The aim of this work was to describe the prevalence of signs and symptoms of temporomandibular disorders (TMD) in children of the State of Puebla, Mexico. A descriptive observational study was performed. After calculating sample size, children who met the following selection criteria were included: r...
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PMID: 21638964
PDF is available here.
PDF is available here.
Relationship between psychological factors and symptoms of TMD in university undergraduate students.
Abstract
Temporomandibular disorders is a collective term used to describe a number of related disorders involving the temporomandibular joints, masticatory muscles and occlusion with common symptoms such as pain, restricted movement, muscle tenderness and intermittent joint sounds. The multifactorial TMD eti...
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PMID: 21638957
PDF is available here.
PDF is available here.
Abstract
PROPOSE: To evaluate the pattern of activation of the masticatory muscles in dysphonic women.
Seventeen women was divided into two groups: experimental group with 10 dysphonic women (33.6 +/- 8.0) and control group with 7 healthy women (25 +/- 5,19). The Electromyography exam of the left (LM) and ri...
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PMID: 21061775
PDF is available here.
PDF is available here.
Abstract
The aim of this study was to evaluate the electromyographic activity during masticatory function, in patients with stomatognathic system dysfunctions, treated with interocclusal splints. Electromyography was carried out through a computer diagnostic system K6-l DIAGNOSTIC SYSTEM (Myo-Tronics, Inc.;...
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PMID: 20349556
PDF is available here.
PDF is available here.
Abstract
Revue Neurologique (165 Spec No 4) 2009
Abstract
Abstract
Muscular tumors are rare. They hardly ever present in jaws. Rhabdomyoma have never been reported in this localization. Clinical and radiological features are non-specific. The diagnosis is based on histopathological features. It is difficult to make for leiomyosarcoma. Surgical excision is the recom...
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PMID: 19836039
PDF is available here.
PDF is available here.
Abstract
Hemimandibulectomy should be avoided whenever possible, as it results in significant deterioration in quality of life. If hemimandibulectomy is unavoidable, attempts should be made to reconstruct the bone and soft tissue defect by free tissue transfer or a pedicled flap such as a pectoralis major my...
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PMID: 19566975
PDF is available here.
PDF is available here.
Dental update (36)7 2009
Abstract
In recent years, it has become clear that the neural mechanisms controlling chewing and swallowing emanate from centres in the brainstem. However, these activities may be modulated by conscious processes and by feedback from peripheral nerves.This review relates this knowledge to clinical dentistry...
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PMID: 19810394
PDF is available here.
PDF is available here.
Abstract
We confirmed the expression of TRPV1 in masseter afferents in rat trigeminal ganglia (TG), and provided new data that TRPA1 is also expressed in primary afferents innervating masticatory muscles in double-labeling immunohistochemistry experiments. We then examined whether the activation of each TRP...
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PMID: 19464796
PDF is available here.
PDF is available here.
Abstract
The integral values of muscular activities and the amount of glucose extraction were significantly greater in Group I. The gape and masticatory width were not significantly different between the groups. The values of the indicators representing the stability of path were smaller in Group I than in G...
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PMID: 19464981
PDF is available here.
PDF is available here.
Abstract
I bilateral molar Angle relationship, and absence of posterior occlusal contacts during mandibular protrusion. An inclusion criterion was that subjects had to be free of signs and symptoms of any dysfunction of the masticatory system. Bipolar surface electrodes were located on the right masseter and...
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PMID: 19697643
PDF is available here.
PDF is available here.
Archives of Oral Biology (54)8 2009
Abstract
We provide data on the muscle activation patterns and bite forces in the lizard Uromastyx acanthinurus. Our results show that muscle recruitment patterns during intra-oral transport and swallowing, are qualitatively similar to those observed for other lizards. Whereas during the slow opening phase t...
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PMID: 19481732
PDF is available here.
PDF is available here.
Der Schmerz (23)3 2009
Abstract
Masticatory muscle pain can be regarded as a regional manifestation of musculoskeletal disorders similar to those observed in other body regions. Along with temporomandibular joint pain and some painless disturbances related to mandibular mobility they are subsumed under the term temporomandibular d...
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PMID: 19551421
PDF is available here.
PDF is available here.
Abstract
Abstract
We focus on the relationships between the nerves supply and the lamination of masticatory muscles in Phascolarctos cinereus (Koala). The masseter muscle consists of superficial and deep muscle layers. The superficial muscle layer of the masseter muscle is divided into rostro-lateral and caudo-intern...
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PMID: 19522301
PDF is available here.
PDF is available here.
Texas dental journal (126)3 2009
Abstract
This study was designed to measure and describe the dynamic function of the muscles of mastication in healthy, dentate adults. Specifically, the study was designed to determine if there are common patterns of masticatory muscle function and whether a given occlusal loading model generates more muscl...
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PMID: 19388437
PDF is available here.
PDF is available here.
Abstract
Abstract
The search methodology provided a total of 102 abstracts and from these 11 full reports were required as full text. Of the 11 articles selected, 8 studied the variation of the muscular activity as a consequence of the experimental introduction of occlusal disturbances whereas the remaining three stu...
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PMID: 19423968
PDF is available here.
PDF is available here.
Brazilian Dental Journal (20)3 2009
Abstract
I disorders. Among these disturbances, depression was the most significant aspect to be reported (p<0.05) since it was present in most symptomatic patients. This important interaction was also significantly correlated (p<0.05) with the Palpation Index. These results suggest that psychopathological a...
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PMID: 19784469
PDF is available here.
PDF is available here.
Brazilian Dental Journal (20)3 2009
Abstract
The purpose of this study was to analyze the electromyographic (EMG) activity and the maximal molar bite force in women diagnosed with osteoporosis in the maxillary and mandibular regions, considering the habits and conditions that lead to development of generalized skeletal bone loss, including on...
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PMID: 19784471
PDF is available here.
PDF is available here.
Abstract
Subjects receiving real acupuncture experienced a significant reduction in jaw pain (P = .04), jaw/face tightness (P = .04), and neck pain (P = .04), and a significant increase in pain tolerance of the masseter muscle (P = .001). Subjects were not able to determine whether they received real or sham...
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PMID: 19888488
PDF is available here.
PDF is available here.
Abstract
The MMP patients showed physiological activation during the baseline period and significantly more physiological activation during the recovery period compared to the controls. This pattern was also present in emotional reactivity between the groups. The emotional and physiological differences betwe...
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PMID: 19639103
PDF is available here.
PDF is available here.
Abstract
The results showed that the combination of a higher initial visual analog scale (VAS) pain score plus a lower jaw function interference score was significantly associated with a reduction of VAS pain after treatment (P < .05; adjusted R2 = 0.54). Moreover, the combination of a higher initial activit...
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PMID: 19639102
PDF is available here.
PDF is available here.
Abstract
Except for one patient, all individuals showed some impact related to physical pain. Of the seven aspects evaluated on the OHIP 14, women presented a greater impact than men only for functional limitations (Mann-Whitney, P < .05). Patients presenting with diagnoses of muscular disorders (group I) or...
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PMID: 19264033
PDF is available here.
PDF is available here.
Abstract
Fifty-two percent of patients presented symptoms of TMD. Thirty-two patients (average age 47 +/- 11 years, AHI 17.3 +/- 8.7, BMI 25.9 +/- 3.8 kg/m(2)) completed the study. According to the Scoring Protocol for Graded Chronic Pain (Axis II-RDC/TMD), 75% of the patients presented chronic pain related...
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PMID: 19888485
PDF is available here.
PDF is available here.
Abstract
Abstract
Although different occlusal appliances with various designs have been described in the literature, little is known about their influence on condylar position. The purpose of the present study was to compare the effect of two occlusal appliances (pivot appliance, stabilization appliance) on condylar...
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PMID: 19241800
PDF is available here.
PDF is available here.
Abstract
After treatment, by the VAS a significant reduction in the intensity of pain it was verified; in the EMG that at rest and during isometric contraction of the mandibular depressor muscles there was a significant reduction in the RMS values; in voluntary contraction during maximal intercuspidation, a...
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PMID: 19694212
PDF is available here.
PDF is available here.
Abstract
Abstract
The aim of this study was to investigate the surface electromyographic (sEMG) activity of neck, trunk, and masticatory muscles in subjects with temporomandibular joint (TMJ) internal derangement treated with anterior mandibular repositioning splints. sEMG activities of the muscles in 34 adult subjec...
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PMID: 18990679
PDF is available here.
PDF is available here.
Abstract
Abstract
The aim of this study was to evaluate the effects of daily turban wear on temporomandibular joint (TMJ) problems. This cross-sectional study was carried out on 249 female patients. Of these, 119 patients were using turban daily, while 130 patients did not use. Patients were asked questions to ascert...
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PMID: 18976273
PDF is available here.
PDF is available here.
Abstract
Journal of Biomechanics (41)15 2008
Abstract
We present results from a detailed three-dimensional finite element analysis of the cranium and mandible of the Australian dingo (Canis lupus dingo) during a range of feeding activities and compare results with predictions based on two-dimensional methodology [Greaves, W.S., 2000. Location of the ve...
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PMID: 18838138
PDF is available here.
PDF is available here.
Abstract
The study assessed the effect of current activation potentiation by evaluating jaw clenching and its effect on the rate of force development (RFD), time to peak force (TTPF), and peak force (PF) during the countermovement jump. Fourteen subjects performed the countermovement jump on a force platform...
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PMID: 18978622
PDF is available here.
PDF is available here.
Abstract
A divided maxillary artery was found in the left infratemporal fossa of a 63-year-old male cadaver during a student dissection practice. The maxillary artery, which arose from the external carotid artery at the posterior border of the ramus of the mandible, was divided into two branches in the infra...
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PMID: 19227200
PDF is available here.
PDF is available here.
Abstract
These results suggest that the condyle moves posteriorly in subjects with forward head posture....
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PMID: 18808377
PDF is available here.
PDF is available here.
Abstract
Clenching with the analyzed prostheses was performed with a relative increment of temporalis activity. Neuromuscular coordination during chewing was larger in patients who maintained their teeth or dental roots, independently from the number of dental contacts....
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PMID: 18828826
PDF is available here.
PDF is available here.