(n.) The large muscle which raises the under jaw, and assists in mastication.
Example Sentences:
(1) Electron microscopic observations of the masseter nerve in the aged cats revealed a disruption of the myelin sheaths and a pronounced increase in collagen fibers in the endoneurium and perineurium.
(2) The use of STA as a method for determining SMU tension in the human masseter muscle appears to be highly task-dependent and in the presence of co-activation may be inappropriate.
(3) The duration of the after-hyperpolarization following antidromic spikes in masseter motoneurones ranged from 15 to 50 ms (mean = 30; S.D.
(4) We show here that the embryonic and the fetal MHC and the MLC1emb are expressed throughout perinatal and postnatal masseter development.
(5) Masseter EMG was recorded by fine wire electrodes and amplified by a specially designed amplifier.
(6) The effects of treatment were monitored by measurement of the bite-force (group with spring bite-blocks only), by electromyographic recording of the activity of the temporal and masseter muscles, and by X-ray cephalometry.
(7) A 5-year-old male Doberman Pinscher had nasal stenosis, dropped mandible, bilateral atrophy of masseter and temporalis muscles, and Horner's syndrome caused by aleukemic myelomonocytic leukemia.
(8) Before and one, two, three, and seven days after the experiment, the following measures were made: (1) superficial masseter and anterior temporalis muscle tenderness (pain threshold), (2) jaw movement (opening and lateral excursion), and (3) current pain level for the right and left sides of the jaw.
(9) The masseter muscle fine structure is shown to be adapted good to the disturbed functional conditions.
(10) Most of the masseter consists of slow- and fast-twitch oxidative fibres.
(11) By spike-triggered averaging of intracellular synaptic noise it has been shown in pentobarbitone anaesthetized cats that jaw elevator muscle spindle afferents with their cell bodies in the mid-brain have a relatively weak monosynaptic projection to masseter and temporalis motoneurones.
(12) LPS induced fevers similar in heights and courses in both nonpregnant and full-term pregnant rabbits It caused decreases in the blood flows to brain, tongue, mammary gland, small intestine, and ear and increases in the blood flows to masseter muscle, bone, liver (hepatic artery), and left ventricle; blood flows to the kidneys, spleen, right ventricle, ovaries, and myometrium did not change.
(13) Exteroceptive suppression of the masseter, temporalis and trapezius muscles, produced by mental nerve stimulation, was studied in 46 patients with chronic headaches.
(14) Evidence is presented that in addition to adult fast and slow myosin, the rabbit masseter contains neonatal and 'cardiac' alpha-MHC.
(15) One of the characteristics of human masseter muscle is type IM fibers, which are rarely seen in muscles other than the masticatory muscles.
(16) The masseter muscle was always a more efficient producer of vertically oriented bite force than the medial pterygoid.
(17) Five injections of lidocaine-HCl into developing mice caused long-term degeneration of the masseter muscle.
(18) Reflex responses occurred in masseter, orbicularis oris inferior, and genioglossus muscles upon direct stimulation of the sites associated with each of these muscles.
(19) Twenty chronic back pain patients, 20 patients who suffered from temporomandibular pain and dysfunction, and 20 healthy controls were instructed to produce eight different levels of muscle contraction in either the m. masseter or the m. erector spinae.
(20) It was found that the masseter muscle in patients with ZMC fractures developed significantly less force than masseter muscle in controls.
Mastication
Definition:
(n.) The act or operation of masticating; chewing, as of food.
Example Sentences:
(1) The ratio of appearance on the fatigue by mastication was as follows: Type I (0%), Type II (50.0%), Type III (40.0-100%) and Type IV (75.0%).
(2) Masticated forages followed trends similar to those of nonmasticated forages, but the effect of mastication was not consistent.
(3) Other activated areas, not directly involved in mastication, were for example, the area postrema (55%), the olfactory (44%) and visual cortex (41%).
(4) When, against Real Madrid, Nani was sent off, Ferguson, jaws agape, interrupting his incessant mastication, roared from the bench, uprooting his assistant and marched to the touchline.
(5) Parapharyngeal space can be defined as a potential space surrounded by deglutitional and masticator muscles and their covering, superficial and middle layer of deep cervical fascia.
(6) Any method employed for the control of drooling must still allow a sufficient volume of flow for mastication, deglutition and oral hygiene.
(7) A discussion is given of the advantages, disadvantages, and pitfalls of computerized tomography of the masticator space.
(8) Bony union is now satisfactory 5 years after injuries and dentures have been recently fitted; speech is normal, the child's facial contours acceptable, and mastication has been satisfactory during this period.
(9) These patients demonstrated good mastication and an excellent incisal opening which was maintained in the late postoperative period.
(10) An artificial oral environment used in this study to simulate mastication also is described.
(11) All subjects displayed malocclusions and were examined for sensitivity of the muscles of mastication to palpation.
(12) New developments in the application of current imaging procedures (both conventional and "high tech") to diagnosis and management of diseases and injuries of the jaws, muscles of mastication, and salivary glands are presented.
(13) An unusual case presenting congenital malformations involving the face and mastication apparatus is described.
(14) The results suggest that canine-protected occlusions do not significantly alter muscle activity during mastication but significantly reduce muscle activity during parafunctional clenching.
(15) Therefore, it is of great significance for the study of prosthodontics to assess what distribution of mechanical strain the maxillar and mandibular bones exhibit to occlusal force at mastication.
(16) The presenting symptomatology in 9 cases of giant epulis seen in West Africa was constantly difficulties in mastication or even speech, and on some occasions tumefaction of the face.
(17) Activity occurred in the masseter and medial pterygoid muscles during the following movements; closing the jaw slowly either without occlusal contact or with occlusal contact and against resistance; free lateral movement to contralateral side, either against resistance or with occlusal contact; protraction of the jaw either without occlusal contact or with occlusal contact; swallowing either saliva or water; incisor gum chewing with either the ipsilateral or contralateral molars; normal mastication; and during forceful centric occlusion.
(18) In a simulated 1-year period of mastication, the results showed that nickel and beryllium metals were released both by dissolution and occlusal wear.
(19) Periods of the latin square included a minimum of 14 d for adaptation and 11 d for esophageal masticate collection and digesta sampling.
(20) In the triturating area the verticality of the interalveolar axis is necessary for the stability of the cusp-fossa relationship in centric occlusion and for the stability of the prothesis during mastication.