AnatomyDiseasesChemicals and DrugsAnalytical, Diagnostic and Therapeutic Techniques and EquipmentPsychiatry and PsychologyPhenomena and ProcessesHealth Care
Masticatory MusclesTemporal MuscleMasseter MuscleBite ForceMasticationPterygoid MusclesFacial PainJawMandibleStomatognathic SystemSleep BruxismTemporomandibular JointTemporomandibular Joint Dysfunction SyndromeDental OcclusionBruxismOcclusal SplintsTemporomandibular Joint DisordersMandibular NerveElectromyographyMusclesMuscle Fibers, SkeletalMuscle ContractionSkullFacial MusclesNasal BoneCephalometryMuscle, SkeletalMyosin Heavy ChainsDentition, MixedMuscle ProteinsRecruitment, NeurophysiologicalBiomechanical PhenomenaMuscle, SmoothTrigeminal NerveVoluntary ProgramsDental Occlusion, BalancedMuscle, Smooth, VascularJaw Relation RecordVolitionNeck MusclesMuscle DevelopmentMuscle FatigueAdaptation, PhysiologicalMuscle Fibers, Fast-TwitchDental Occlusion, CentricMuscle Fibers, Slow-TwitchIsometric ContractionAnalysis of Variance
ContractionElectromyographyTemporomandibular jointMovementsPharynxDisordersContractionsTongueRight masseter muscleActivityWeaknessInterferenceEsophagealSkeletal muscleTeethInvoluntarySpindlesFacial musclesNeckParalysisLateralPalpationOcclusionFibersSEMGResponsesStiffnessJointsToothInabilityTensionFunctionPostureDysfunctionSymptomsNeurologicallyAnteriorFunctionsPainMovementVibrationPatientsAffectsActivationDifficulties
Contraction12
  • Methods: Surface electromyography (EMG) of the right and left masseter and temporalis muscles was performed in 126 undergraduate students at rest and at maximal voluntary contraction. (bvsalud.org)
  • The analysis of the asymmetry index for two pairs of muscles during maximal voluntary contraction was based on the asymmetry index proposed by Naeije, McCarrol and Weijs (1989). (bvsalud.org)
  • Conclusions: For the population of undergraduate students, there is no evidence that the presence and severity of TMD influence the EMG activity of masseter and temporalis muscles and the muscle asymmetry index at rest and maximal voluntary contraction. (bvsalud.org)
  • This method is a non-invasive evaluation of the bioelectric phenomena of muscle activity at rest and during muscle contraction and is useful for assessing the electrical activity of MM 9-10 . (bvsalud.org)
  • The maxim voluntary contraction of the muscles on both sides was compared, also among the groups without prosthesis. (mdsabstracts.org)
  • The data collected at rest, protrusion, left and right laterality, and clenching were normalized by maximum voluntary contraction. (wellbalancedmvmt.com)
  • Schematic of a trigger point complex of a muscle in longitudinal section.A: The central trigger point (CTrP) in the endplate zone contains numerous electrically active loci and numerous contraction knots. (medscape.com)
  • The sarcomeres within one of these enlarged segments (ie, contraction knot) of a muscle fiber are markedly shorter and wider than the sarcomeres in the neighboring normal muscle fibers, which are free of contraction knots. (medscape.com)
  • The purpose of this study was to determine the effect of strength ramp isometric contraction on changes in surface electromyography (sEMG) signal characteristics of the hamstrings muscles. (waset.org)
  • Myotonia Atrophica / Myotonic dystrophy is characterized by progressive multisystem genetic impairment in relaxation of muscles after voluntary contraction due to repetitive depolarization of the muscle membrane disorders muscle wasting and weakness. (rxharun.com)
  • Monitor tendon tension and force produced by muscle contraction. (slideshare.net)
  • Previously, two manual maximum voluntary isometric contraction tests of the serratus anterior muscle were reported that recruited optimal surface electromyography (sEMG) activity in a sitting position. (han.nl)
Electromyography4
  • Surface electromyography is widely used for evaluation and observation of the electrophysiological behavior of the muscles under different physiological conditions 4-5 . (bvsalud.org)
  • Electromyography is used to evaluate the electrical activity of these muscles, considered as an important means to diagnose muscle disturbance 3 . (mdsabstracts.org)
  • Electromyography of the masticatory muscles: analysis in the original and RMS value. (mdsabstracts.org)
  • Electromyography (EMG) sensors are generally used to record the electrical activity produced by skeletal muscles. (waset.org)
Temporomandibular joint3
Movements5
  • An individual affected with FCMS develops disabilities associated with voluntary movements using the facial, lingual, pharyngeal, and masticatory muscles. (wikipedia.org)
  • Amplitude and speed of masticatory movements in patients with Parkinson's disease. (mdsabstracts.org)
  • The pyramidal system, controlling voluntary movements, includes precise anatomic pathways from the cortex to muscle. (medscape.com)
  • Voluntary movements through the pyramidal systems are visible. (medscape.com)
  • It is an inability to make normal, coordinated, voluntary movements but is not caused by muscle weakness, involuntary spasms, or too little strength to move. (vin.com)
Pharynx2
  • Foix-Chavany-Marie Syndrome (FCMS), also known as bilateral opercular syndrome, is a neuropathological disorder characterized by paralysis of the facial, tongue, pharynx, and masticatory muscles of the mouth that aid in chewing. (wikipedia.org)
  • It constitutes one of the most elaborate motor functions, even in humans, because it requires the coordination of an extraordinary bilateral sequence of activation and inhibition of more than 25 pairs of muscles in the mouth, pharynx, and larynx, plus the esophagus. (nature.com)
Disorders1
  • Sarcopenia, a condition characterized by a loss of skeletal muscle mass, increases the risk of developing various gastrointestinal disorders. (bvsalud.org)
Contractions3
  • It begins with the opening of the upper esophageal sphincter, followed by peristaltic contractions of the esophageal muscles and the opening of the lower esophageal sphincter. (basicmedicalkey.com)
  • The finding indicated that there were contractions of the muscles during the salat and exercise with almost same EMG's level. (waset.org)
  • People with this disorder often have prolonged muscle contractions (myotonia) and are not able to relax certain muscles after use. (rxharun.com)
Tongue2
Right masseter muscle2
Activity12
  • It was verified that the use of dental prosthesis interfered negatively on the electrical activity of the masticatory muscles of parkinsonians. (mdsabstracts.org)
  • Research conducted at the Ribeirao Preto Dental School, Sao Paulo University in Brazil, found that after 3 months of acupuncture, patients with TMJ experienced significantly less pain, increased strength of their bite and decreased EMG activity of the masticatory muscles. (wellbalancedmvmt.com)
  • Exteroceptive suppression (ES), more commonly referred to as the EMG Silent Period (SP), can be seen as a brief cessation of recorded electro-myographic elevator muscle activity within a functional burst. (scholasticahq.com)
  • The myoelectric activity of the muscles were recorded and analyzed. (waset.org)
  • [rx] It is characterized by a "warm-up phenomenon" upon examination where it appears more pronounced after rest and improves with muscle activity. (rxharun.com)
  • Current sleep study evidence suggests that even before first tooth contact a series of physiological events occur which include activation of the autonomic cardiac system at minus 4 minutes, brain activity at minus four seconds, a rise in jaw opener muscle tone with 2 big breaths, and an increase in heart rate at minus one second. (medscape.com)
  • Figure 1: Swallowing motor pattern and sequential activity of vagal motor fibers in species with striated (a, sheep) or striated and smooth muscle (b, baboon) esophagus. (nature.com)
  • The present study aimed to examine the relationship between genioglossus (GG) muscle activity and mandibular position, considering both anterior and vertical displacements during sleep. (biomedcentral.com)
  • A study that evaluated the activity of the genioglossus (GG) muscle during sleep showed that subjects with OSAS had significantly greater activity reductions than normal subjects [ 1 , 2 , 3 ]. (biomedcentral.com)
  • With the application subjects are requested to report, at least 12 times per day, the status of their masticatory muscle activity (relaxed muscles, jaw bracing without tooth contact, teeth contact, teeth clenching or teeth grinding). (preprints.org)
  • 1, (2020)) Background Strength testing of the serratus anterior muscle with hand held dynamometry (HDD) in supine subjects has low reproducibility, and is influenced by compensatory activity of other muscles like the pectoralis major and upper trapezius. (han.nl)
  • Results Serratus anterior muscle sEMG activity was most isolated in a seated position with the humerus in 90 degrees anteflexion in the scapular plane. (han.nl)
Weakness3
  • [rx] Distal muscle weakness is the predominant symptom in classic DM1. (rxharun.com)
  • The classic form also presents with the characteristic "myopathic face" or "hatchet face" due to weakness and wasting of the facial, levator palpebrae, and masticatory muscles. (rxharun.com)
  • [rx] Some physical examination findings include early-onset cataracts (younger than 50 years), varying grip myotonia, proximal muscle weakness or stiffness, hearing loss, and myofascial pain. (rxharun.com)
Interference1
  • The outcomes selected for the systematic review were self-reported pain, pain interference, unassisted jaw opening without pain, muscle pain upon palpation, depression, and somatization. (quintessence-publishing.com)
Esophageal1
  • 1, 3, 4 In some species, the esophageal muscle is entirely composed of striated fibers and is therefore also controlled by cranial motoneurons ( Figure 1a ). (nature.com)
Skeletal muscle4
  • We defined sarcopenia as a skeletal muscle index at the level of the third lumbar vertebra of ≤29.6 cm2/m2 for women and ≤36.2 cm2/m2 for men. (bvsalud.org)
  • Cross-sectional computed tomography images of skeletal muscle at the level of the third lumbar vertebra were evaluated using DICOM image analysis software (OsiriX). (bvsalud.org)
  • Voluntary, or skeletal, muscle is the largest single organ of the human body and accounts for nearly 50% of the body's weight. (medscape.com)
  • [ 1 , 2 ] MTrPs are hyperirritable tender spots in palpable tense bands of skeletal muscle that refer pain and motor dysfunction, often to another location. (medscape.com)
Teeth4
  • A deficiency of magnesium, a vital mineral for nerve function and muscle relaxation, was likely contributing to my bruxism and teeth shifting. (intelligentwellbeing.com)
  • It is part of a more holistic approach known as 'Orthotropics,' which emphasizes proper oral posture (mouth closed with teeth lightly touching), correct swallowing pattern (without engaging facial muscles), and nasal breathing. (intelligentwellbeing.com)
  • Functional therapy restores the harmonious interaction of teeth, muscles and jaw. (stefan-widmann-zahnarzt.de)
  • I don't believe that occluding on a digitized wafer will actually record the correct and proper 6 dimensional closing contact position of a complete lower arch of teeth since there are posturing muscles and disc conditions that effect that closing position when occluding. (occlusionconnections.com)
Involuntary1
  • Introduction Sensory information is critical in the initiation and correct performance of both voluntary and involuntary motor responses, (Pedretti 2001). (slideshare.net)
Spindles2
  • 5,7 It can also naturally occur from a TMJ click of sufficient intensity as muscle spindles are excited by vibration or jaw jerk, 6 or occur unintentionally due to a deflective tooth contact during normal mastication. (scholasticahq.com)
  • to muscle spindles, Golgi tendon organs and vestibular apparatus, (McCormack 2001). (slideshare.net)
Facial muscles1
Neck1
Paralysis4
  • FCMS caused by the formation of bilateral lesions causes paralysis of the facial, lingual, pharyngeal, and masticatory muscles. (wikipedia.org)
  • The toxins cause lower motor neuron paralysis, or a loss of voluntary muscle movement. (wagwalking.com)
  • Further physical examination will be conducted to determine the extent of your dog's muscle paralysis. (wagwalking.com)
  • In the case of respiratory muscle paralysis indicated by trouble breathing and/or elevated carbon dioxide and decreased oxygen levels found in the blood, radiography may be used to examine the size of your dog's esophagus: an enlarged esophagus is a sign of labored breathing. (wagwalking.com)
Lateral2
  • The main muscles affected in this dysfunction are the temporal (anterior and posterior), masseter (superficial and deep), pterygoid (medial and lateral) and digastric muscles 5 . (bvsalud.org)
  • Behavior that occurs during the day is termed awake or diurnal bruxism and can consist of semi-voluntary clenching or lateral tooth grinding movement. (medscape.com)
Palpation2
  • Cross-sectional drawing shows flat palpation of a taut band and its trigger point.Left: Skin pushed to one side to begin palpation (A). The fingertip slides across muscle fibers to feel the cord-line texture of the taut band rolling beneath it (B). The skin is pushed to other side at completion of movement. (medscape.com)
  • This same movement performed vigorously is snapping palpation (C).Right: Muscle fibers surrounded by the thumb and fingers in a pincer grip (A). The hardness of the taut band is felt clearly as it is rolled between the digits (B). The palpable edge of the taut band is sharply defined as it escapes from between the fingertips, often with a local twitch response (C). (medscape.com)
Occlusion2
  • Objectives: To investigate if interferences in the oral cavity result in immediate changes in the masticatory muscles and if foot interferences cause immediate effects on occlusion, chewing, swallowing and on body posture. (usp.br)
  • The GG muscle is a major contributor to preventing upper airways occlusion. (biomedcentral.com)
Fibers2
  • A taut band of muscle fibers extends from the trigger point to the attachment at each end of the involved fibers. (medscape.com)
  • In other species, however, for example, cats, opossums, and primates, a variable portion of the lower esophagus is composed of smooth muscle fibers, controlled by central preganglionic neurons and peripheral neurons of the enteric nervous system ( Figure 1b ). (nature.com)
SEMG1
  • Construct validity was determined by evaluating force production (assessed with HHD) in relation to sEMG of the serratus anterior, upper trapezius and pectoralis major muscles, comparing the three test positions. (han.nl)
Responses1
  • This pilot study conducted initial research into the bio mechanical responses of human muscles in various positions of salat. (waset.org)
Stiffness1
  • It's symptoms, like muscle stiffness, can cause difficulties for chewing 1 . (mdsabstracts.org)
Joints1
Tooth1
  • It is common the presence of tooth loss at this age and dental prosthesis are an alternative for the treatment, however, they may act on the masticatory function 2 . (mdsabstracts.org)
Inability1
  • This form of FCMS involves voluntary-autonomic dissociation and an inability to form speech. (wikipedia.org)
Tension1
  • Latent TrPs characteristically cause increased muscle tension and limit the stretch range of motion, which often escapes the patient's attention or is simply accepted. (medscape.com)
Function2
  • An electromyograph, model: Miotool Face 200/400, was used to evaluate the masticatory muscle function. (mdsabstracts.org)
  • Often, it is necessary to consider and deal with the cause that activated the TrPs, to identify and correct any perpetuating factors (which often are different than what activated the TrPs), and to help the patient restore and maintain normal muscle function. (medscape.com)
Posture1
  • 1 Maintenance of such a posture is related to gravity fluctuation, a phenomenon that is said to be controlled by information from the ocular region, the three semicircular canals, and the antigravity muscles. (allenpress.com)
Dysfunction1
  • Research of electromyographic characteristics among undergraduate students with TMD is essential for an early detection of bioelectric characteristics of muscles that may predispose individuals to pain and muscle dysfunction and/or joint in the adult age 4,9 . (bvsalud.org)
Symptoms1
  • Symptoms of FCMS can be present in a person of any age and it is diagnosed using automatic-voluntary dissociation assessment, psycholinguistic testing, neuropsychological testing, and brain scanning. (wikipedia.org)
Neurologically1
  • The output from the circuit exhibits electrical potential generated by the muscle cells when they are neurologically activated. (waset.org)
Anterior1
  • Conclusion The results indicate that validity for strength testing of the serratus anterior muscle is optimal with subjects in a seated position and the shoulder flexed at 90 degrees in the scapular plane. (han.nl)
Functions1
  • However, the reflexive and autonomic functions of these muscles groups are usually intact. (wikipedia.org)
Pain3
  • Aims: To investigate differences between higher and lower pain catastrophizers in the effects of hypertonic saline-evoked jaw muscle pain on pain perception and jaw movement. (quintessence-publishing.com)
  • In a study, patients with myofascial (coverings of muscle) pain, the application of topical CBD over masseter muscle for 2 weeks improved the condition of masticatory muscles. (elementapothec.com)
  • Other possible benefits of topical CBD include hair growth, peripheral nerve pain, and muscle pain. (elementapothec.com)
Movement1
  • The cerebellum is the part of the brain that coordinates voluntary movement, allowing your pet to reach toward the water bowl or you to move your arm appropriately when you want to pick something up. (vin.com)
Vibration2
  • Stimulation and vibration to facilitate destrusor muscles or inhibit micturition. (slideshare.net)
  • quick stretch, vibration and tapping over muscle belly, (Feuchter 2001). (slideshare.net)
Patients2
  • Comme nous l'avons vu dans les chapitres précédents, les directives de pratique clinique utilisent différents systèmes de classification pour guider la prise en charge de ces patients. (fullphysio.com)
  • Il est bon de noter que quelle que soit l'approche utilisée, les guidelines des récentes études soutiennent l'utilisation de la réassurance, des conseils et de l'éducation thérapeutique pour la plupart des patients considérés comme présentant un faible risque de chronicité en phase aigüe (Blanpied et al. (fullphysio.com)
Affects1
  • Previous studies reported that stimulation of the periodontal membrane affects antigravity muscles. (allenpress.com)
Activation1
  • Once again, regardless of how sensitive or accurate the activation of these sensels, it is the clinical assumption that the patient with the unseen spastic hyper muscles that will be "accurately" occluding into the wafer. (occlusionconnections.com)
Difficulties1
  • [rx] Dysarthria and hand muscle myotonia may be prominent features and might exacerbate learning difficulties. (rxharun.com)