Masseter Muscle: A masticatory muscle whose action is closing the jaws.Masticatory Muscles: Muscles arising in the zygomatic arch that close the jaw. Their nerve supply is masseteric from the mandibular division of the trigeminal nerve. (From Stedman, 25th ed)Temporal Muscle: A masticatory muscle whose action is closing the jaws; its posterior portion retracts the mandible.Mastication: The act and process of chewing and grinding food in the mouth.Bite Force: The force applied by the masticatory muscles in dental occlusion.Jaw: Bony structure of the mouth that holds the teeth. It consists of the MANDIBLE and the MAXILLA.Pterygoid Muscles: Two of the masticatory muscles: the internal, or medial, pterygoid muscle and external, or lateral, pterygoid muscle. Action of the former is closing the jaws and that of the latter is opening the jaws, protruding the mandible, and moving the mandible from side to side.Stomatognathic System: The mouth, teeth, jaws, pharynx, and related structures as they relate to mastication, deglutition, and speech.Zygoma: Either of a pair of bones that form the prominent part of the CHEEK and contribute to the ORBIT on each side of the SKULL.Vertical Dimension: The length of the face determined by the distance of separation of jaws. Occlusal vertical dimension (OVD or VDO) or contact vertical dimension is the lower face height with the teeth in centric occlusion. Rest vertical dimension (VDR) is the lower face height measured from a chin point to a point just below the nose, with the mandible in rest position. (From Jablonski, Dictionary of Dentistry, 1992, p250)Trigeminal Nuclei: Nuclei of the trigeminal nerve situated in the brain stem. They include the nucleus of the spinal trigeminal tract (TRIGEMINAL NUCLEUS, SPINAL), the principal sensory nucleus, the mesencephalic nucleus, and the motor nucleus.Electromyography: Recording of the changes in electric potential of muscle by means of surface or needle electrodes.Mandible: The largest and strongest bone of the FACE constituting the lower jaw. It supports the lower teeth.Facial Pain: Pain in the facial region including orofacial pain and craniofacial pain. Associated conditions include local inflammatory and neoplastic disorders and neuralgic syndromes involving the trigeminal, facial, and glossopharyngeal nerves. Conditions which feature recurrent or persistent facial pain as the primary manifestation of disease are referred to as FACIAL PAIN SYNDROMES.Dental Occlusion: The relationship of all the components of the masticatory system in normal function. It has special reference to the position and contact of the maxillary and mandibular teeth for the highest efficiency during the excursive movements of the jaw that are essential for mastication. (From Jablonski, Dictionary of Dentistry, 1992, p556, p472)Trigeminal Nerve: The 5th and largest cranial nerve. The trigeminal nerve is a mixed motor and sensory nerve. The larger sensory part forms the ophthalmic, mandibular, and maxillary nerves which carry afferents sensitive to external or internal stimuli from the skin, muscles, and joints of the face and mouth and from the teeth. Most of these fibers originate from cells of the TRIGEMINAL GANGLION and project to the TRIGEMINAL NUCLEUS of the brain stem. The smaller motor part arises from the brain stem trigeminal motor nucleus and innervates the muscles of mastication.Bruxism: A disorder characterized by grinding and clenching of the teeth.Sucking Behavior: Any suction exerted by the mouth; response of the mammalian infant to draw milk from the breast. Includes sucking on inanimate objects. Not to be used for thumb sucking, which is indexed under fingersucking.Muscle Spindles: Skeletal muscle structures that function as the MECHANORECEPTORS responsible for the stretch or myotactic reflex (REFLEX, STRETCH). They are composed of a bundle of encapsulated SKELETAL MUSCLE FIBERS, i.e., the intrafusal fibers (nuclear bag 1 fibers, nuclear bag 2 fibers, and nuclear chain fibers) innervated by SENSORY NEURONS.Facial Muscles: Muscles of facial expression or mimetic muscles that include the numerous muscles supplied by the facial nerve that are attached to and move the skin of the face. (From Stedman, 25th ed)Skeletal Muscle Myosins: Myosin type II isoforms found in skeletal muscle.Temporomandibular Joint Dysfunction Syndrome: A symptom complex consisting of pain, muscle tenderness, clicking in the joint, and limitation or alteration of mandibular movement. The symptoms are subjective and manifested primarily in the masticatory muscles rather than the temporomandibular joint itself. Etiologic factors are uncertain but include occlusal dysharmony and psychophysiologic factors.Myosin Heavy Chains: The larger subunits of MYOSINS. The heavy chains have a molecular weight of about 230 kDa and each heavy chain is usually associated with a dissimilar pair of MYOSIN LIGHT CHAINS. The heavy chains possess actin-binding and ATPase activity.Muscle Fibers, Skeletal: Large, multinucleate single cells, either cylindrical or prismatic in shape, that form the basic unit of SKELETAL MUSCLE. They consist of MYOFIBRILS enclosed within and attached to the SARCOLEMMA. They are derived from the fusion of skeletal myoblasts (MYOBLASTS, SKELETAL) into a syncytium, followed by differentiation.Succinylcholine: A quaternary skeletal muscle relaxant usually used in the form of its bromide, chloride, or iodide. It is a depolarizing relaxant, acting in about 30 seconds and with a duration of effect averaging three to five minutes. Succinylcholine is used in surgical, anesthetic, and other procedures in which a brief period of muscle relaxation is called for.Neck Muscles: The neck muscles consist of the platysma, splenius cervicis, sternocleidomastoid(eus), longus colli, the anterior, medius, and posterior scalenes, digastric(us), stylohyoid(eus), mylohyoid(eus), geniohyoid(eus), sternohyoid(eus), omohyoid(eus), sternothyroid(eus), and thyrohyoid(eus).Muscle Rigidity: Continuous involuntary sustained muscle contraction which is often a manifestation of BASAL GANGLIA DISEASES. When an affected muscle is passively stretched, the degree of resistance remains constant regardless of the rate at which the muscle is stretched. This feature helps to distinguish rigidity from MUSCLE SPASTICITY. (From Adams et al., Principles of Neurology, 6th ed, p73)Temporomandibular Joint: An articulation between the condyle of the mandible and the articular tubercle of the temporal bone.Muscle Contraction: A process leading to shortening and/or development of tension in muscle tissue. Muscle contraction occurs by a sliding filament mechanism whereby actin filaments slide inward among the myosin filaments.Cephalometry: The measurement of the dimensions of the HEAD.Sella Turcica: A bony prominence situated on the upper surface of the body of the sphenoid bone. It houses the PITUITARY GLAND.Chin: The anatomical frontal portion of the mandible, also known as the mentum, that contains the line of fusion of the two separate halves of the mandible (symphysis menti). This line of fusion divides inferiorly to enclose a triangular area called the mental protuberance. On each side, inferior to the second premolar tooth, is the mental foramen for the passage of blood vessels and a nerve.Temporomandibular Joint Disorders: A variety of conditions affecting the anatomic and functional characteristics of the temporomandibular joint. Factors contributing to the complexity of temporomandibular diseases are its relation to dentition and mastication and the symptomatic effects in other areas which account for referred pain to the joint and the difficulties in applying traditional diagnostic procedures to temporomandibular joint pathology where tissue is rarely obtained and x-rays are often inadequate or nonspecific. Common diseases are developmental abnormalities, trauma, subluxation, luxation, arthritis, and neoplasia. (From Thoma's Oral Pathology, 6th ed, pp577-600)Maxilla: One of a pair of irregularly shaped bones that form the upper jaw. A maxillary bone provides tooth sockets for the superior teeth, forms part of the ORBIT, and contains the MAXILLARY SINUS.Muscle Fibers, Slow-Twitch: Skeletal muscle fibers characterized by their expression of the Type I MYOSIN HEAVY CHAIN isoforms which have low ATPase activity and effect several other functional properties - shortening velocity, power output, rate of tension redevelopment.Diagnostic Techniques, Otological: Methods and procedures for the diagnosis of diseases of the ear or of hearing disorders or demonstration of hearing acuity or loss.Trismus: Spasmodic contraction of the masseter muscle resulting in forceful jaw closure. This may be seen with a variety of diseases, including TETANUS, as a complication of radiation therapy, trauma, or in association with neoplastic conditions.Facial Asymmetry: Congenital or acquired asymmetry of the face.Nasal Bone: Either one of the two small elongated rectangular bones that together form the bridge of the nose.Facial Bones: The facial skeleton, consisting of bones situated between the cranial base and the mandibular region. While some consider the facial bones to comprise the hyoid (HYOID BONE), palatine (HARD PALATE), and zygomatic (ZYGOMA) bones, MANDIBLE, and MAXILLA, others include also the lacrimal and nasal bones, inferior nasal concha, and vomer but exclude the hyoid bone. (Jablonski, Dictionary of Dentistry, 1992, p113)Overbite: A malocclusion in which maxillary incisor and canine teeth project over the mandiblar teeth excessively. The overlap is measured perpendicular to the occlusal plane and is also called vertical overlap. When the overlap is measured parallel to the occlusal plane it is referred to as overjet.Dental Arch: The curve formed by the row of TEETH in their normal position in the JAW. The inferior dental arch is formed by the mandibular teeth, and the superior dental arch by the maxillary teeth.Maxillofacial Development: The process of growth and differentiation of the jaws and face.Jaw Abnormalities: Congenital absence of or defects in structures of the jaw.Myosin Type I: A subclass of myosins found generally associated with actin-rich membrane structures such as filopodia. Members of the myosin type I family are ubiquitously expressed in eukaryotes. The heavy chains of myosin type I lack coiled-coil forming sequences in their tails and therefore do not dimerize.Dictionaries, MedicalDictionaries as Topic: Lists of words, usually in alphabetical order, giving information about form, pronunciation, etymology, grammar, and meaning.Crowdsourcing: Social media model for enabling public involvement and recruitment in participation. Use of social media to collect feedback and recruit volunteer subjects.Terminology as Topic: The terms, expressions, designations, or symbols used in a particular science, discipline, or specialized subject area.Muscles: Contractile tissue that produces movement in animals.Myofascial Pain Syndromes: Muscular pain in numerous body regions that can be reproduced by pressure on TRIGGER POINTS, localized hardenings in skeletal muscle tissue. Pain is referred to a location distant from the trigger points. A prime example is the TEMPOROMANDIBULAR JOINT DYSFUNCTION SYNDROME.
Masseter. The Masseter is a great, powerful, and very thick muscle covered by a tough, shining fascia lying ventral to ...
... origin of masseter, insertion of masseter, posterior mandibular region, submandibular region, lateral pterygoid area, and ... Elevation - Anterior and middle fibers of temporalis, the superficial and deep fibers of masseter and the medial pterygoid. ... The main muscles involved are the masseter, temporalis and medial and lateral pterygoid muscles. ... such as the TMJ and the masseter muscle. Symptoms of sialendenitis and sialothiasis cases can be confused with Eagle syndrome, ...
masseter; relaxed temporalis and internal pterygoid 27. Mouth stretch. pterygoids, digastric 28. Lip suck. orbicularis oris ...
The superficial masseter originates on the front edge of the zygoma, and the lateral masseter extends over most of its length.[ ... The lateral masseter extends forwards onto the rostrum. The superficial masseter extends forwards along the zygoma. ... The zygomasseteric system (or zygomasseteric structure) in rodents is the anatomical arrangement of the masseter muscle of the ... The medial masseter is enlarged, and passes through an enlarged infraorbital foramen to originate on the side of the rostrum. ...
... masseter); weak lip muscles (orbicularis oris); overdeveloped chin muscles (mentalis); muscular imbalance; abnormal dentition. ...
The Temporalis; the zygomatic arch and Masseter have been removed. Dissection, showing salivary glands of right side. Fracture ... the lower border and medial surface give origin to the Masseter. High cheekbones are pronounced zygomatic arches, causing the ...
Regional muscle transposition using temporalis muscle\ masseter muscle. Free muscle transfer like gracilis muscle. " ...
Its lateral surface is smooth, and affords insertion to the Temporalis and Masseter. Its medial surface gives insertion to the ... The Temporalis; the zygomatic arch and Masseter have been removed. Coronoid process of mandible Mandibular nerve and bone. Deep ...
The medial surface is concave, and affords attachment to the masseter. The anterior end is deeply serrated and articulates with ... The inferior border, short, thick, and arched, has attached to it some fibers of the masseter. ...
Ueber Kaumuskeln bei Lacertilia, 1904 - On the masseter of Lacertilia. Die Salamander und die ursprünglichsten vierbeinigen ...
In response, the masseter muscles will jerk the mandible upwards. Normally this reflex is absent or very slight. However, in ... The jaw jerk reflex or the masseter reflex is a stretch reflex used to test the status of a patient's trigeminal nerve (CN V) ... Kossioni, A.e.; Karkazis, H.c. (1994-07-01). "The influence of gender on the masseter electromyographic jaw-jerk reflex in ... The ECMs were focussed on the masseter muscle and temporalis muscle. Females showed a significantly higher amplitude - meaning ...
It covers the masseter, and is firmly connected to it. Above, this fascia is attached to the lower border of the zygomatic arch ...
Diagnosis of MMM is through either biopsy of the temporalis or masseter muscles or the 2M antibody assay, in which blood serum ... masseter, and pterygoid muscles. The disease is usually bilateral. MMM is caused by the presence of 2M fibers in the muscles of ...
The masseter muscle does not pass through the infraorbital canal; it cannot due to the position of the canal. Some authorities ... The masseter muscle does attach directly behind the zygomatic arch in a manner very different from sciuromorphs. Some ...
The lateral surface is convex and subcutaneous; the medial is concave, and affords attachment to the masseter. The anterior end ... has attached to it some fibers of the masseter. ...
The masseter muscle has been shown to insert into the pectoralis muscles, allowing for a higher degree of food retention. The ... Concerning the musculature, the cheek pouch is composed primarily of a developed masseter (cheek) muscle that exhibits a high ... The buccal divisions of this nerve supply much of the masseter muscle, which ultimately facilitates the voluntary retention of ... The primary aforementioned muscle, the masseter, is supplied by two large neural branches known as the temporalis and zygomatic ...
Külső részén a rágóizom (musculus masseter), belső részén a musculus pterygoideus medialis tapad. A ligamentum stylomandibulare ...
An electromygraphic feedback technique for teaching voluntary relaxation of the masseter. Journal of Dental Research, 52,116- ...
The inferior border, short, thick, and arched, has attached to it some fibers of the masseter. The lateral surface is convex ... The medial surface is concave, and affords attachment to the masseter. The anterior end is deeply serrated and articulates with ...
Orbital arches are notorious, the masseter muscles are heavy and bulky. These contribute to the width of the head and reflect ...
What distinguishes the masseter is not anything special about the muscle itself, but its advantage in working against a much ... By this definition, the masseter or jaw muscle is the strongest. The 1992 Guinness Book of Records records the achievement of a ...
The medial pterygoid, along with the masseter allows the jaw to move in a vertical direction as it contracts and relaxes. The ...
Masseters attach from the dentary (specifically, the masseteric fossa) to the zygomatic arch and onto the maxilla in front of ... the crushing force of the masseters is relatively more important than is shearing. The jaw joint is generally well above the ...
The defining feature is muscle diastasis which is separation of the masseter. This phenotype can also be partially corrected ...
The location these carnassial pairs is determined primarily by the masseter muscle. In this position, the carnassial teeth ...
Masseter muscle is compartmentalized by a laminar structure, which was shown to elevate Tnmd mRNA in mouse embryos between ... "Tenomodulin regulated the compartments of embryonic and early postnatal mouse masseter muscle". Annals of Anatomy - ...
Nocturnal masseter muscle activity and urinary catecholamine levels in bruxers. / Clark, G. T.; Rugh, John D; Handelman, S. L. ... Nocturnal masseter muscle activity and urinary catecholamine levels in bruxers. Journal of Dental Research. 1980;59(10):1571- ... Clark, G. T. ; Rugh, John D ; Handelman, S. L. / Nocturnal masseter muscle activity and urinary catecholamine levels in bruxers ... Clark, G. T., Rugh, J. D., & Handelman, S. L. (1980). Nocturnal masseter muscle activity and urinary catecholamine levels in ...
The word masseter (usually /məˈsiːtər/, sometimes /ˈmæsɪtər/) comes through New Latin from Greek μασᾶσθαι masasthai ... Masseter. The left masseter muscle (red highlight), shown partially covered by superficial muscles such as the platysma muscle ... Wikimedia Commons has media related to Masseter muscles.. *^ Elsevier, Dorlands Illustrated Medical Dictionary, Elsevier.. .mw ... The masseter muscle can become enlarged in patients who habitually clench or grind (with bruxism) their teeth and even in those ...
Masseter muscle. Deep dissection. Mummification process. Zygomasseteric system The word masseter (usually /məˈsiːtər/, ... The masseter muscle can become enlarged in patients who habitually clench or grind (with bruxism) their teeth and even in those ... The masseter is a thick, somewhat quadrilateral muscle, consisting of two heads, superficial and deep. The fibers of the two ... The masseter parallels the medial pterygoid muscle, but it is stronger and superficial fibres can cause protrusion. To perform ...
Definition of masseter (muscle). Provided by Stedmans medical dictionary and Drugs.com. Includes medical terms and definitions ... masseter (muscle). Definition: masticatory muscle of posterior cheek; origin, superficial part: inferior border of the anterior ...
The masseter muscle is a facial muscle that plays a major role in the chewing of solid foods. The muscle is shaped similar to a ... The masseter muscle is a facial muscle that plays a major role in the chewing of solid foods. The muscle is shaped similar to a ... The masseter is the key muscle that pulls the mandible upward. All four muscles are connected to a single division of the ... The masseter is divided into two distinct sections, the 'superficial' and 'deep' portions. The superficial ...
Imbalances or tightness of the masseter on each side of your jaw can contribute to... ... You couldnt open or close your mouth without your masseter muscles. ... You couldnt open or close your mouth without your masseter muscles. Imbalances or tightness of the masseter on each side of ... ":"[exercise masseter muscles,TMJ disorder,masseter exercises]"} Get the latest tips on diet, exercise and healthy ...
Masseter hypertrophy is usually an asymptomatic enlargement of one or both masseter muscles. In majority of the cases, the ... The traditional method of treatment for masseter hypertrophy is the surgical partial excision of masseter muscle under general ... Debulking of the masseter muscle was performed as the patient was very worried about the asymmetry of the face (Figure 8). The ... Removal of the masseter muscle insertion by means of a triangular incision was done by Martensson in a patient with history of ...
Effects of Masseter Manual Therapy on Temporomandibular Dysfunction. The recruitment status of this study is unknown. The ... Our goal is to improve masticatory function through treatment of trigger points in the masseter. ...
The treatment of masseter hypertrophy with botulinum toxin type A. Saudi Med J. 2006;27:397-400. [PubMed] ... Roncevic R. Masseter muscle hypertrophy: Aetiology and therapy. Journal of Maxillofacial Surgery. 1986;14:344-348. [PubMed] ... Idiopathic masseter muscle hypertrophy (IMMH) was first described by Legg in 1880, reporting on the case of a 10-year-old girl ... Masseter muscle reduction procedure with radiofrequency Coagulation. J Oral Maxillofac Surg. 2009;67:457-463. [PubMed] ...
Lower facial remodeling with botulinum toxin type A for the treatment of masseter hypertrophy.. Klein FH1, Brenner FM2, Sato MS ... Masseter hypertrophy has been treated with botulinum toxin injections because of esthetic complaints especially in Asians. ... The goal of the present study was to evaluate the efficacy of abobotulin toxin use in masseter hipertrophy treatment in ... The use of abobotulinum toxin A for masseter hypertrophy is effective in Brazilians and reached its maximum effect of facial ...
Home , September 2015 - Volume 26 - Issue 6 , Myositis Ossificans Circumscripta in the Masseter Muscle Mim... ... Myositis Ossificans Circumscripta in the Masseter Muscle Mimicking Phleboliths. Demirkol, Mehmet DDS, PhD; Aras, Mutan Hamdi ... Myositis Ossificans Circumscripta in the Masseter Muscle Mimicking Phleboliths Journal of Craniofacial Surgery26(6):2020-2021, ...
Botulinum Toxin Versus Placebo Injections to Temporalis and Masseter Muscles. The safety and scientific validity of this study ... Are there any adverse effects that result from injection of botulinum toxin A or placebo into the masseters and temporalis ... Comparison of Botulinum Toxin Versus Placebo Injections to Temporalis and Masseter Muscles in the Management of Myofascial Pain ... Three injection sites into bilateral masseter muscles and two injection sites into bilateral temporalis muscles will be ...
Changes in masseter muscle trigger points following strain-counterstrain or neuro-muscular technique.. Ibáñez-García J1, ... Subjects underwent a screening process to establish the presence of MTrPs in the masseter muscle. Subjects were divided ... in the masseter muscle. Seventy-one subjects, 34 men and 37 women, aged 20-65 years old, participated in this study. ... that neuromuscular or strain/counter-strain technique might be employed in the management of latent MTrPs in the masseter ...
Masseter Muscle / pathology*. Osteogenesis, Distraction* / instrumentation, methods. Osteotomy. Proliferating Cell Nuclear ... tissues were taken from masseter muscle overlying the osteotomy and the equivalent region on the unoperated side (contralateral ... study suggest that distraction of the porcine mandible by the protocol described induces myocyte proliferation in the masseter ...
... masseter (muscle) explanation free. What is masseter (muscle)? Meaning of masseter (muscle) medical term. What does masseter ( ... Looking for online definition of masseter (muscle) in the Medical Dictionary? ... masseter (muscle). Also found in: Dictionary, Thesaurus, Encyclopedia. mas·se·ter (mus·cle). [TA] masticatory muscle of ... Masseter (muscle) , definition of masseter (muscle) by Medical dictionary https://medical-dictionary.thefreedictionary.com/ ...
Topic Masseter Muscle Rigidity (MMR): Definition, Relationship to Malignant Hyperthermia (MH), and Management Developed in 2018 ... Masseter Muscle Rigidity: Definition, Relationship to Malignant Hyperthermia, and Management: ... To differentiate between the normal rises in masseter tension versus a case of true MMR, assessing masseter rigidity is helpful ... Masseter Muscle Rigidity: Definition, Relationship to Malignant Hyperthermia, and Management *Healthcare Professionals ...
Masseter Muscle Spasm, Succinylcholine, and Strabismus Surgery You will receive an email whenever this article is corrected, ... Masseter Muscle Spasm, Succinylcholine, and Strabismus Surgery. Anesthesiology 10 1988, Vol.69, 636. doi: ... Joan B. Carroll; Masseter Muscle Spasm, Succinylcholine, and Strabismus Surgery. Anesthesiology 1988;69(4):636. ...
Seventy-seven patients who developed masseter muscle rigidity (MMR) after receiving succinylcholine to facilitate tracheal ... Seventy-seven patients who developed masseter muscle rigidity (MMR) after receiving succinylcholine to facilitate tracheal ...
Even 6 months after a single injection, the masseter muscles were much smaller than before injection (loss of about 70 mm2). ... The very limited amount of mandibular bone examined is only part of the masseters attachment, and an unaffected muscle, the ... This happens because the Botox causes temporary muscle paralysis and the masseters undergo atrophy when they are not used.) The ... The authors refer to this finding as an unwanted side effect of multiple Botox injections of the masseter muscles. ...
Masseter nerve stimulation initially excited the rostral part of the S2/IOR region, and an adjacent region responded to jaw ... These findings suggest that proprioception of the masseter is processed in S1 and S2/IOR. Other sensory information, such as ... The spatial proximity of these regions may be associated with the mechanisms by which masseter muscle pain is incorrectly ... Second, we visualized the regions responding to electrical stimulation of the masseter nerve, which activates both motor ...
Masseter Spasm with Anesthesia: Incidence and Implications You will receive an email whenever this article is corrected, ... Masseter Spasm with Anesthesia: Incidence and Implications. Anesthesiology 12 1984, Vol.61, 772-775. doi: ... LYNNAE SCHWARTZ, MARK A. ROCKOFF, BABU V. KOKA; Masseter Spasm with Anesthesia: Incidence and Implications. Anesthesiology 1984 ...
Following a masseter-to-facial nerve transfer, the majority of patients will have a single overnight stay in the hospital. In ... Masseter-to-facial nerve transfers are a treatment option for smile restoration when the main trunk of a patients facial nerve ... The nerve fibers from the masseter nerve will use the series of empty tunnels inside the damaged facial nerve to guide them to ... The motor nerve branch to a local chewing muscle (masseter) is explored. Once identified, the long branch of the nerve is freed ...
Nocturnal masseter EMG activity of healthy subjects in a natural environment. ZORA Maintenance. Advanced Notice: On Saturday, ... Gallo, L M; Gross, S S; Palla, S (1999). Nocturnal masseter EMG activity of healthy subjects in a natural environment. Journal ... The masseter EMG was recorded during seven nights in each subjects natural environment with the electrodes in reproducible ... The masseter EMG was recorded during seven nights in each subjects natural environment with the electrodes in reproducible ...
Hypertonic saline; Pain; Masseter muscle; Biomarkers National Category Basic Medicine Identifiers. URN: urn:nbn:se:liu:diva- ... After 2 hours 0.2 mL hypertonic saline (58.5 mg/mL) was injected into the masseter on one side and 0.2 mL isotonic saline (9 mg ... Intramuscular microdialysis into masseter muscles was performed to sample serotonin (5-HT), glutamate, lactate, pyruvate, ... Serotonin, glutamate and glycerol are released after the injection of hypertonic saline into human masseter muscles - a ...
Complications of botulinum toxin injection for masseter hypertrophy: Incidence rate from 2036 treatments and summary of causes ...
MuscleMusclesDeveloped masseter muscleHypertrophy of the masseter muscleRecording the masseter muscleHuman masseter muscleMandibleSuperficialSize of the masseter muscleArising in the masseter muscleElectromyographicCase of unilateral masseterBotulinumBruxismLarge masseter muscleUnilateral masseter hypertrophyBilateralLateral pterygoidCheekInjectionsChanges in masseterTreatment for masseterBotox MasseterReductionSpasmNocturnalEnlargementNeckTemporalis muscleAngleFibersInjectionSuccinylcholineContractionBilaterallyPosteriorMeasured by ultrasonographyJawsMusculusSide of your jawMuscle thicknessSquare jawlineProminentTrismusSurgicalSubjectsActivityAsymmetry
- The left masseter muscle (red highlight), shown partially covered by superficial muscles such as the platysma muscle , the zygomaticus major muscle and the zygomaticus minor muscle . (wikipedia.org)
- In human anatomy, the masseter [help is one of the muscles of mastication . (wikipedia.org)
- Along with the other three muscles of mastication ( temporalis , medial pterygoid , and lateral pterygoid ), the masseter is innervated by the anterior division of the mandibular division (V3) of the trigeminal nerve . (wikipedia.org)
- During chewing, the masseter is assisted by three other muscles: the temporalis, medial pterygoid, and lateral pterygoid. (healthline.com)
- You couldn't open or close your mouth without your masseter muscles. (livestrong.com)
- Stretching and exercising the masseter muscles can restore balance to your jaw and relieve the symptoms of TMJ. (livestrong.com)
- It clinically presents as an enlargement of one or both masseter muscles. (hindawi.com)
- Masseter hypertrophy is usually an asymptomatic enlargement of one or both masseter muscles. (hindawi.com)
- MH is an asymptomatic persistent enlargement of one or both masseter muscles resulting from a work hypertrophy, initiated by clenching, bruxing, or heavy gum chewing and this occurs primarily in younger patients. (pubmedcentralcanada.ca)
- This study aims to determine whether the injection of botulinum toxin A or placebo (unpreserved 0.9% sodium chloride) into the masseter and temporalis muscles provides pain relief and improved jaw function in those who suffer from myofascial pain disorder. (clinicaltrials.gov)
- Are there any adverse effects that result from injection of botulinum toxin A or placebo into the masseters and temporalis muscles? (clinicaltrials.gov)
- Three injection sites into bilateral masseter muscles and two injection sites into bilateral temporalis muscles will be identified by having the patient clench. (clinicaltrials.gov)
- Even 6 months after a single injection, the masseter muscles were much smaller than before injection (loss of about 70 mm 2 ). (tmj.org)
- The authors refer to this finding as an 'unwanted side effect' of multiple Botox injections of the masseter muscles. (tmj.org)
- The neurons in the trigeminal mesencephalon (MesV) are the primary neurons that process sensory information from the muscle spindles in the jaw-closing muscles, which include the masseter and temporalis muscles ( Lennartsson, 1980 ). (frontiersin.org)
- Intramuscular microdialysis into masseter muscles was performed to sample serotonin (5-HT), glutamate, lactate, pyruvate, glucose and glycerol. (diva-portal.org)
- Muscle Spindle Composition and Distribution in Human Young Masseter and Biceps Brachii Muscles Reveal Early Growth and Maturation. (docme.ru)
- For example, faces that look square-ish or too round may be due to a result of bigger "masseter" muscles on the sides of the face and jawline. (michelegreenmd.com)
- However, now there is a non-surgical procedure for reducing these muscles and making the face look slimmer, known as the "Botox square jaw reduction" or "Botox Masseter reduction" - which is now is available in NYC thanks to board certified dermatologist Dr. Michele Green. (michelegreenmd.com)
- The masseter muscle is located on each side of your jaw and is one of the main muscles involved with chewing (along with the temporalis and pterygoid muscles). (michelegreenmd.com)
- When someone chews or grinds teeth too often, the masseter muscles can grow more than usual and cause issues with one's facial shape - think of a person lifting weights too often for instance. (michelegreenmd.com)
- And since you have approximately 75% less skin injection points versus conventional methods or dermal filler procedures (which also require multiple injections), the 1 injection Botox procedure on the masseter muscles has fast become the preferred option for many male and female patients. (michelegreenmd.com)
- You should also avoid lying down in the first four hours after the procedure and avoid massaging the masseter muscles. (michelegreenmd.com)
- The aim of the present study was to analyse the influence of temporomandibular disorder (TMD) on electromyographic activity in the masseter and temporal muscles of adolescents and investigate a possible association with the number of occlusal contacts. (biomedcentral.com)
- Electromyography revealed significant differences in the right and left masseter and temporal muscles at rest and during chewing among the three groups. (biomedcentral.com)
- Electromyographic activity in the masseter and temporal muscles was greater among adolescents with moderate to severe TMD. (biomedcentral.com)
- The feasibility of examining electro‐mechanical activity of the human masseter muscles using non‐invasive recording techniques was examined in six healthy dentate adults (aged 34‐57 years). (edu.au)
- Bilateral recordings of EMG and AMG were made simultaneously using composite probes which were placed on the skin over the masseter muscles. (edu.au)
- Simultaneous recordings of AMG and EMG from the masseter muscles may be useful for assessing electro‐mechanical muscle function but further validation studies are required before the technique can be used clinically. (edu.au)
- Masseter muscles are positioned lateral to the mandibular ramus. (medicadepot.com)
- Masseter muscles that are hypertrophied or enlarged have the effect of altering facial lines, which may cause potentially undesirable aesthetic features like a square jaw (which is considered to appear masculine) or asymmetry. (medicadepot.com)
- First described in 1880 by Legg, masseter hypertrophy is a relatively rare disorder primarily characterized by enlargement of one or both masseter muscles. (medicadepot.com)
- Furthermore, the hard and rough food that makes up their diet plays a role in developing and enlarging masseter muscles. (medicadepot.com)
- Electromyographic analysis of masseter and temporal muscles, bite force, masticatory efficiency in medicated individuals with schizophrenia and mood disorders compared with healthy controls. (sciendo.com)
- 0.05) in the level of pain was observed for the temporomandibular joint and for the masseter muscles using paired samples t-test and Wilcoxon signed rank test. (sciendo.com)
- The masseter muscles (Botulinum Toxin) - to giving a more oval slimmer feminine appearance to soften square jaw lines. (tavistockdrive.com)
- It works together with the temporalis and masseter muscles to elevate the mandible. (livestrong.com)
- The masseter muscle is one of the main four muscles involved in chewing and sits between the cheekbone and the lower jaw. (hedoxclinic.co.uk)
- As it is one of the main muscles of the lower face, the masseter muscle plays an important role in facial aesthetics and many people with masseter muscle enlargement complain of facial asymmetry (as well as other symptoms such as grinding of the teeth). (hedoxclinic.co.uk)
- In order to overcome this problem in clinical settings, Magnusson and Helkimo proposed a more concise functional examination of the masticatory system in children, including the palpation of 'a few informative jaw muscles' recommending the masseter and temporal muscles as such. (thefreedictionary.com)
- Clinical neurologic investigation one day after the syncopal episode revealed a short stature, madarosis, sore neck muscles, a prominent masseter reflex, reduced patellar tendon reflexes, and absent Achilles tendon reflexes. (thefreedictionary.com)
- or stress may lead to muscle spasm and grinding, causing the internal and external pterygoid and masseter muscles to go into spasm-causing pain. (thefreedictionary.com)
- The genioglossal, masseter and lateral pterygoid muscles showed apparently reduced activity during obstructive sleep apnea (Figure 27). (google.com)
- Dr. Mesas Answered: Fullness of the lower cheeks are caused by either enlarged buccal fat pads ( most common cause) or enlarged masseter muscles ( less common). (buccalfatremoval.nyc)
- Chubbiness caused by enlarged (hypertrophic) masseter muscles is located in the POSTERIOR lower cheek. (buccalfatremoval.nyc)
- The influence of hot pack therapy on the blood flow in masseter muscles. (agfisicos.com)
- The objectives of this study are to investigate how PITX2 , ENPP1 and ESR1 gene expression associates with four subclassifications of craniofacial asymmetry , temporomandibular disorders and fiber type differences compared between right and left masseter muscles . (temple.edu)
- People who have asymmetrical jaw muscles (masseters) can also benefit from treatment. (dermaskin.co.uk)
- Unilateral- or bilateral hypertrophy of the masseter muscle is characterized by an increase in the volume of the muscle mass. (pubmedcentralcanada.ca)
- Idiopathic hypertrophy of the masseter muscle is a rare disorder of unknown cause. (pubmedcentralcanada.ca)
- The manifestations vary from general symptoms like loss of interest, loss of appetite, constipation to growth failure and mental retardation.Pericardial effusion is known in hypothyroidism but rarely reported with KDSS.Here we present case of KDSS with hypertrophy of the masseter muscle and pericardial effusion. (ojhas.org)
- The hypertrophy of the masseter muscle is a rare and poorly described in the literature, presenting itself as an excessive increase in volume in the posterior mandible, is of uncertain etiology, causing functional changes, aesthetic discomfort, and psychosocial harm to patients. (bvsalud.org)
- This article reports a case of hypertrophy of the masseter muscle, treated surgically, through oral incision, obtaining satisfactory aesthetic and functional result. (bvsalud.org)
- Acoustic myography in the assessment of human masseter muscle. (edu.au)
- L'Estrange P.R., Rowell J. and Stokes M.J. (1993) Acoustic myography in the assessment of human masseter muscle. (edu.au)
- Sex difference in the hemoglobin oxygenation state of the resting healthy human masseter muscle. (thefreedictionary.com)
- TIMP-1 activity was consistently expressed in human masseter muscle. (oup.com)
- These data indicate that in most individuals, an excess of TIMP-1, compared with MMP-2 and MMP-9, limits ECM turnover in human masseter muscle. (oup.com)
- The superficial portion of the masseter is the thick and tendon-like portion of the muscle that connects to the cheekbone, while the deep portion is the smaller and more muscular portion of the muscle that connects to the mandible. (healthline.com)
- The masseter is the key muscle that pulls the mandible upward. (healthline.com)
- Dissection, showing salivary glands of right side (Masseter visible at center) Left temporal bone, outer surface Left temporal bone, inferior surface Left zygomatic bone, temporal surface Mandible, outer surface, side view The arteries of the face and scalp. (wikipedia.org)
- This paper reports a case of unilateral masseter hypertrophy with keloid scar in the angle of the mandible for which surgical treatment was rendered to the patient by using a single approach. (hindawi.com)
- Proliferation of masseter myocytes after distraction osteogenesis of the porcine mandible. (biomedsearch.com)
- CONCLUSIONS: The results of this study suggest that distraction of the porcine mandible by the protocol described induces myocyte proliferation in the masseter muscle. (biomedsearch.com)
- Differential diagnoses for swelling at the angle of the mandible could exist, including compensatory hypertrophy (due to hypotrophy or hypoplasia in the contralateral side), masseter tumour, masseter muscle intrinsic myopathy, parotid tumour, salivary gland disease, parotid odontogenic problems, neoplasms of soft tissues, and inflammatory disease. (medicadepot.com)
- The masseter muscle is a parallelogram-shaped facial muscle connected to the mandible and the cheekbone. (medicadepot.com)
- Fourteen days after injection, all rats were sacrificed, and samples containing the masseter muscle and mandible were obtained for histological examination. (springeropen.com)
- After the harvested tissues were fixed in a formalin solution for 1 day, decalcification was performed with a 5 % nitric acid solution, and specimens containing the masseter muscle and mandible were generated. (springeropen.com)
- The most obvious muscle of mastication is the masseter muscle, since it is the most superficial and one of the strongest. (wikipedia.org)
- The masseter is a thick, somewhat quadrilateral muscle, consisting of two heads, superficial and deep. (wikipedia.org)
- The masseter parallels the medial pterygoid muscle , but it is stronger and superficial fibres can cause protrusion. (wikipedia.org)
- The masseter superficial muscle is the larger. (medicineppt.com)
- The EMG of the superficial masseter muscle was recorded using Biotech Neurocare 2000 surface electromyography machine. (joralres.com)
- The muscle activity was recorded bilaterally from the superficial masseter. (joralres.com)
- The aim of this study was to determine the detailed anatomical structures of the superficial part of the masseter and to elucidate the boundaries and locations of the deep tendon structure within the superficial part of the masseter. (mdpi.com)
- The deep tendon structure was located deep in the lower third of the superficial part of the masseter. (mdpi.com)
- The superficial part of the masseter consists of not only the muscle belly but also the deep tendon structure. (mdpi.com)
- Based on the results obtained in this morphological study, we recommend performing layer-by-layer retrograde injections into the superficial and deep muscle bellies of the masseter. (mdpi.com)
- Options to reduce the size of the masseter muscle include surgical and non-surgical methods. (drjoshuarosenberg.com)
- While there are surgical options for reducing the size of the masseter muscle, these are invasive, costly, necessitate recovery/downtime, and are associated with various side effects. (hedoxclinic.co.uk)
- Nocturnal electromyographic recordings of masseter muscle activity were performed on 20 bruxist and ten control subjects. (uthscsa.edu)
- The masseter muscle, the genioglossal muscle, and the inferior head of the lateral pterygoid muscle showed significantly lower electromyographic amplitudes during and higher amplitudes after obstructive apnea. (google.com)
- Objective: To comparatively assess electromyographic (EMG) activity of masseter muscle and maximum bite force among various facial divergence pattern. (joralres.com)
- Lower facial remodeling with botulinum toxin type A for the treatment of masseter hypertrophy. (nih.gov)
- Masseter hypertrophy has been treated with botulinum toxin injections because of esthetic complaints especially in Asians. (nih.gov)
- Botulinum toxin is commonly used in Asia to contour the lower face and is useful for the treatment of masseter hypertrophy. (medicadepot.com)
- However, he was initially treated by injection of botulinum toxin A due to misdiagnosis as unilateral masseter hypertrophy. (koreascience.or.kr)
- The purpose of this study was to compare the expression levels of p65 and S100 in the rat masseter muscle after the injection of different concentrations of botulinum toxin-A (BTX-A). (springeropen.com)
- The masseter muscle can become enlarged in patients who habitually clench or grind (with bruxism ) their teeth and even in those who constantly chew gum. (wikipedia.org)
- Perhaps you grind or clench your teeth (Bruxism), chew gum excessively or crunch ice, and this has attributed to a large masseter muscle. (drjoshuarosenberg.com)
- This method is highly effective for patients that have an enlarged masseter muscle due to Bruxism, as it reduces the tendency of the individual to grind or clench teeth. (drjoshuarosenberg.com)
- If you are someone who clenches your teeth often or grinds your teeth, also known as bruxism, your masseter muscle may be larger than normal. (mynewbeauty.com)
- In addition to causing enlargement of the masseter muscle, bruxism can also cause trauma to the temporomandibular joint. (mynewbeauty.com)
- Masseter muscle hypertrophy is a unilateral or bilateral enlargement of the masseter muscle, of undefined etiology, which in most cases generates an aesthetic discomfort, and in some cases a functional one as well. (bvsalud.org)
- To compare bilateral variation therefore derive the clinical importance changes in masseter EMG activity. (joralres.com)
- Data were collected using a portable electromyogram system, and bursts of bilateral masseter muscle activity were counted over 12-hour periods before and during the 1(superscript st)~6(superscript th), 15(superscript th) and 29(superscript th) days of orthodontic treatment in order to investigate changes in masseter muscle activity. (elsevier.com)
- From the cheekbone to the lower jaw on each side of the face, the masseter muscle is positioned along the rear part of the cheek. (drjoshuarosenberg.com)
- On the basis of previous studies that demonstrated predictable differences in muscle stiffness for contracted versus relaxed musculature, investigators evaluated orofacial muscle stiffness in the masseter , cheek, and tongue. (thefreedictionary.com)
- The masseter muscle is located in the back part of your cheek, and it runs along the angle of the jaw. (mynewbeauty.com)
- right cheek [masseter? (healthboards.com)
- Ten Brazilian female patients with masseter hypertrophy were subjected to injections of 90U of abobotulinum toxin A applied on each side respecting the safety zone stabilished in literature and were followed up for 24 weeks. (nih.gov)
- Repeated Injections of Botox into the Masseter Muscle. (tmj.org)
- The authors of this study examined mandibular bone before and after subjects received Botox injections into each masseter muscle. (tmj.org)
- The finding of bone loss is consistent with the only other human Botox study on jaws, a cross-sectional examination of the condylar bone of TMJ disorder patients who did or did not receive masseter injections (Raphael et al. (tmj.org)
- Several medical studies have shown that injections of Botox are effective in relaxing the masseter muscle and bringing it back to its normal size. (thefreedictionary.com)
- Although some people may be concerned that these injections will cause the masseter muscle to become paralyzed and make chewing food impossible, this is not the case. (mynewbeauty.com)
- Masseter reduction with Botox injections does not produce immediate results. (mynewbeauty.com)
- Botox injections for masseter reduction are a minimally invasive alternative to surgery. (mynewbeauty.com)
- Changes in masseter muscle trigger points following strain-counterstrain or neuro-muscular technique. (nih.gov)
- This study was conducted to investigate changes in masseter muscle activity and their correlations with orthodontic pain produced by tooth movement during orthodontic treatment. (elsevier.com)
- The portable EMG system used in this study, regardless of whether gathering short-term or long-term EMG data, was able to efficiently reveal changes in masseter muscle activity. (elsevier.com)
- Ensure that the condition is properly diagnosed before providing treatment for masseter hypertrophy. (medicadepot.com)
- Muscle relaxant treatment for masseter muscle enlargement costs £400 and results can be seen in as little as six weeks, with the effects lasting around six months to one year, sometimes longer depending on individual physiology. (hedoxclinic.co.uk)
- Because of the sheer bulk of the masseter muscle, portions of it are sometimes removed by plastic surgeons performing jaw reduction surgery. (healthline.com)
- Several treatment options reported for masseter hypertrophy are present, which range from simple pharmacotherapy to more invasive surgical reduction. (hindawi.com)
- A combined reduction of the mandibular angle and shaving of the masseter muscle was planned. (hindawi.com)
- Masseter reduction can restore the face to a sleek, feminine appearance. (beautyboostmedspa.com)
- With decreased exertion, you will see a noticeable masseter reduction within 4 to 6 weeks, allowing jawline to become less square or round. (beautyboostmedspa.com)
- In either case, Masseter (Jaw) Reduction is a facial reshaping procedure designed to shrink the masseter muscle and ultimately reduce its appearance. (drjoshuarosenberg.com)
- Dr. Joshua D. Rosenberg M.D. of Facial Plastic & Reconstructive Surgery in New York City and Staten Island provides surgical and non-surgical Masseter Reduction to slim and feminize the lower face. (drjoshuarosenberg.com)
- Thus, as a facial feminization and reshaping procedure, masseter reduction is the perfect treatment to achieve confidence, beauty and facial harmony. (drjoshuarosenberg.com)
- Non-surgical reduction of the masseter muscle utilizes popular injectable agents such as BOTOX Cosmetic or Dysport. (drjoshuarosenberg.com)
- To schedule an appointment with Dr. Rosenberg to discuss masseter reduction, contact his NYC or Staten Island practice today. (drjoshuarosenberg.com)
- He will discuss the masseter reduction treatments available if you are considering softening the look of your square jawline. (mynewbeauty.com)
- BOTOX® expert, Beverly Hills plastic surgeon Dr. Donald B. Yoo, discusses BOTOX® for masseter reduction. (donyoomd.com)
- Nocturnal masseter EMG activity of healthy subjects in a natural environment. (uzh.ch)
- A positive relationship was found between increased epinephrine content and high levels of nocturnal masseter muscle activity. (uthscsa.edu)
- The relationship between nocturnal masseter muscle activity and urinary catecholamines. (springer.com)
- Stress perception and nocturnal masseter muscle activity. (springer.com)
- For most people, normal muscle movement does not cause masseter enlargement. (beautyboostmedspa.com)
- The cause of the majority of masseter muscle enlargement cases is unknown, however numerous factors such as poor dental structure and the shape of the temporomandibular joint are thought to play a role. (hedoxclinic.co.uk)
- Masseter hypertrophy leads to the prominent mandibular angle which is aesthetically unacceptable to the patient. (hindawi.com)
- Physical examination revealed that the patient had unilateral masseter muscle bulging, with a prominent mandibular angle at the lower border. (hindawi.com)
- The masseter, a thick quadrate masticatory muscle, arises from the zygomatic arch and inserts into the inferior lateral aspect and angle area of the mandibular ramus. (pubmedcentralcanada.ca)
- The scans were directed at the mandibular angle, where the masseter attaches. (tmj.org)
- After a two-month follow-up, it was observed that the surgical approach for the treatment of masseter hypertrophy is well advised, since the aesthetic results are excellent, with similarity to the contralateral side of mandibular angle. (bvsalud.org)
- Significant positive correlation between masseter muscle thickness and posterior total face height, jarabak ratio, ramus height, mandibular length and significant negative correlations with mandibular plane angle, gonial angle and PP-MP angle were observed. (bvsalud.org)
- In panoramic radiography, correlations were found between anterior angle length and posterior angle length and masseter muscle thickness in females, and between body length and posterior angle length, between anterior angle length and body length, between ramal length and body length, and between body length and condyle length in males. (yonsei.ac.kr)
- Second, we visualized the regions responding to electrical stimulation of the masseter nerve, which activates both motor efferent fibers and somatosensory afferent fibers, including those that transmit nociceptive and proprioceptive information. (frontiersin.org)
- Ag/AgCl electrodes were also used over the masseter muscle 15 mm apart in the direction of the main fibers. (google.com)
- 5-HT, glutamate and glycerol increased after a painful hypertonic saline injection into the masseter muscle, but without sex differences. (diva-portal.org)
- Another benefit is that the procedure can be done within your lunch break as it only takes one single skin injection on each side to reach various key points of the masseter muscle. (michelegreenmd.com)
- The injection of BTX-A into the masseter muscle induced muscle atrophy. (springeropen.com)
- Therefore, the expression levels of S100 and p65 in the masseter muscle may change after BTX-A injection. (springeropen.com)
- Masseter muscle thickness in different skeletal morphology: An ultrasonographic study. (bvsalud.org)
- Context Masseter muscle thickness influences the skeletal patterns. (bvsalud.org)
- Purpose: The purpose of this study was to evaluate the relationship between masseter muscle thickness, facial morphology, and mandibular morphology in Korean adults using ultrasonography. (yonsei.ac.kr)
- Facial photos and panoramic radiography were used for morphological analyses and evaluated for correlations with masseter muscle thickness. (yonsei.ac.kr)
- We also evaluated the correlations of age, body weight, stature, and body constitution with masseter muscle thickness. (yonsei.ac.kr)
- Facial photography showed that bizygomatic facial width over facial height was correlated with masseter muscle thickness in both sexes in the relaxed state, and was statistically significantly correlated with masseter muscle thickness in males in the contracted state. (yonsei.ac.kr)
- Conclusion: Masseter muscle thickness was associated with facial and mandibular morphology in both sexes, and with age in males. (yonsei.ac.kr)
- Ultrasonography can be used effectively to measure masseter muscle thickness. (yonsei.ac.kr)
- For many women, enlarged masseters create an undesired square jawline, chubby cheeks, or masculine appearance. (beautyboostmedspa.com)
- Kanaya H, Saito Y, Gama N, Konno W, Hirabayashi H, Haruna S. Intramuscular hemangioma of masseter muscle with prominent formation of phleboliths: a case report. (koreascience.or.kr)
- Generally, women prefer a V-shaped face or softer jawline, which makes a prominent masseter muscle undesirable. (mynewbeauty.com)
- The patient opted for surgical option as he wanted to get rid of the scar immediately and we told him that we can do the correction of masseter hypertrophy and scar revision through one incisional approach only. (hindawi.com)
- Masseter muscle samples were collected from 174 subjects undergoing surgical treatment for correction of malocclusion . (temple.edu)
- Subjects underwent a screening process to establish the presence of MTrPs in the masseter muscle. (nih.gov)
- Healthy subjects showed intermittent periods of masseter activity during sleep which, on average, were of rather low intensity and short duration. (uzh.ch)
- Bite force, endurance and masseter muscle fatigue in healthy edentulous subjects and those with TMD. (sciendo.com)
- The aim of the study was to obtain information about masseter muscle activity, the main determinant of salivary flow during the chewing process. (surrey.ac.uk)
- The activity of the masseter muscle was determined by EMG (IED®) and the following measurements made: Amplitude (muscle action potential = MAP, expressed in V) and duration of MAP (expressed in sec). (surrey.ac.uk)
- The intake of hay or haylage was associated with intense masseter muscle activity (MAP: hay 9.82±1.7 V, haylage 11.4±3.3 V, duration MAP: hay 0.31±0.04 sec, haylage 0.30±0.04 sec). (surrey.ac.uk)
- In contrast to roughages, concentrates are consumed rapidly, with less intense masseter muscle activity as reflected by the low amplitude of EMG (MAP 4.9±1.5 V). This is associated with low salivary flow rates that are likely to negatively affect gastric digestion. (surrey.ac.uk)
- Specifically, speech rate, dysfluency rate, and facial masseter EMG activity were assessed in several situations (while reading aloud, being interviewed, role playing a social situation, and speaking over the telephone). (thefreedictionary.com)
- In the temporal muscle , the activity was present in 23-36% while the masseter in 55% of cases. (thefreedictionary.com)
- Correlation between masseter muscle activity and maximum bite force among various facial divergence pattern. (joralres.com)
- The EMG recording of masseter muscle activity in Hypodivergent group was significantly higher than Normodivergent and Hyperdivergent groups. (joralres.com)
- A significant correlation existed between masseter activity and bite force. (joralres.com)
- The pain response was assessed using a visual analog scale (VAS) in order to investigate the influence of orthodontic pain on masseter muscle activity. (elsevier.com)
- In a comparison of masseter muscle activity during a loading test before and after orthodontic treatment, the maximal discharge voltage of maximal clenching showed a rapid decrease then a slow recovery to the original pretreatment level. (elsevier.com)
- In addition, the influence of long-term masseter muscle activity due to initial orthodontic leveling tended to be great during daytime ＞ meals ＞ whole day ＞ sleep period, and greatest influence was on low-amplitude bursts. (elsevier.com)
- We concluded that initial orthodontic leveling reduced masseter muscle activity for 5~6 days, after which time it gradually recovered. (elsevier.com)