SEARCH · PubMed Health

Results for “Temporal Muscle”

Explore indexed PubMed citations for clinical trials, systematic reviews and public health research. Read source abstracts and follow each citation to its original PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 91 records · Page 5Linked to original sources

PubMed1984

[Blood flow fluctuations in the microvessels of the rat temporal muscle].

Dynamic characteristics of the blood flow linear velocity in microvessels on the surface of rat's temporal muscle were determined by means of accelerated cinemicrography. The blood flow velocity varied from 200 to 5000 microseconds in microvessels with diameter 4-13 mu. The blood flow fluctuated with period of 0.3-7.0 sec and amplitude 0.5-100% of the average. Auto- and crosscorrelation analysis showed a positive interrelationship between velocities shifted in time by 0.5 sec in 37% of the cases. The interrelationships did not exist between rapid changes of the blood flow in either adjacent or distant microvessels. The sharp blood flow changes seem to be due to periodical passage of leucocytes and aggregated erythrocytes which increases the resistance of blood current in the microvessels.

Animals↗

PubMed1989

Immediate electromyographic response in masseter and temporal muscles to bite plates and stabilization splints.

The immediate influence on masticatory muscle activity of bite plates and stabilization splints was investigated in control subjects and patients with craniomandibular disorders. Electromyographic surface recordings were performed from the masseter and temporal muscles bilaterally with and without the appliances in situ. In the rest position, no significant change in average activity was registered in any muscle with either appliance. Activity during maximal biting on stabilization splints was not different from that without the appliance while bite plates caused a decrease in activity in both muscles in both groups. The reduced maximal activity was probably due to the smaller number and exclusively anterior positioned occlusal contacts on the bite plate.

Adult↗

PubMed1996

The influence of the asymmetric tonic neck reflex on the H-reflex in human temporal muscle.

In contrast to limb muscles, little is known about the role of the asymmetric tonic neck reflex (ATNR) on jaw-elevator muscles. The effect of rotation of the head on the H-reflex in the anterior part of the temporal muscle after masseteric nerve stimulation was evaluated. Eight healthy volunteers (7 males and 1 female, age range 18 to 27 years, mean age 22 years) participated. The masseteric M-response and the masseteric and temporal H-reflexes were elicited by stimulating the masseteric nerve using a monopolar needle technique. The electromyographic activity of the muscles was recorded by surface electrodes. The ATNR was modified by changing position of the head: 30 degrees rotation towards the stimulated side (+N), 30 degrees rotation towards the non-stimulated side (-N) and 0 degree central position (C). The heteronymous temporal H-reflex was elicited at a stimulus intensity of 120% maximal M-response at a frequency of 1 Hz, in random series of 5 to 20 sweeps, up to 30-50 sweeps for each position. On-line averaging was performed. A significant reduction of the H-reflex amplitude was observed in the -N position (p-0.02 paired "t"-test, p = 0.015 Wilcoxon signed rank test), while a significant increase was present in the +N position (p = 0.007 PTT and WSR). Also multivariate analysis yielded a significant influence of head rotation on H-reflex amplitude (p = 0.0032). It can be concluded that the ATNR has a significant influence on the H-reflex of the human temporal muscle.

Adolescent↗

PubMed1994

[B-lymphoma arising in the temporal muscle].

B cell lymphoma arising in skeletal muscle is described with the review of literature. A 72-year-old man visited our hospital on September 21st 1992, because of a right temporal mass which had grown gradually since one year previously. A CT scan and MRI showed a soft tissue mass adjacent to the temporal muscle expanding from the right temporal to infratemporal fossa. Physical examination on admission revealed that the mass at the right temporal region, was non-tender, elastic soft, and 5 x 2 cm in diameter. Some elastic hard masses at the right infraauricular region, approximately 1.5 x 1.2 cm in diameter, were also found. Histological examination of a biopsied specimen obtained from the temporal mass revealed B cell lymphoma, diffuse medium-sized cell type. Tests for surface markers using tumor cell suspension showed positive results for CD5, CD19, CD20, SmIg mu, delta, lambda, but negative for CD10. Chromosomal analysis revealed clonal aberrations, and the defining karyotype as 51, X, +X, -Y, +2, +3, +4, +8, +12. The patient achieved a complete remission after treatment with combination chemotherapy including doxorubicin, cyclophosphamide, vincristine, etoposide, vindesine, procarbazine, and prednisolone.

Aged↗

PubMed2005

Orthodromic transposition of the temporal muscle for facial paralysis: made easy and better.

The authors present a modified technique of transposition of temporal muscle for reanimation of facial paralysis. Fourteen cases illustrate the simplicity, advantages, and excellent esthetic and functional results of this method.

Adolescent↗

PubMed2001

Myositis ossificans traumatica of the temporal muscle: a case report.

Myositis ossificans traumatica (MOT) is a pathological condition characterized by extraskeletal formation of bony tissue, induced by violent or repeated trauma. Reports of this pathology occurring in the region of the head and neck are rare, and even more so in the muscles of mastication. We present the case of patient with MOT of the temporal muscle, the etiology of which seems to be related to traumatic manipulations during dental treatment. A review of the literature is presented and the surgical approach, which resolved this case is discussed.

Female↗

PubMed1990

[Transposition of the temporal muscle and surgery of the middle third of the face. Technic, indications and results].

The authors reemploy the technique using the temporal muscle to fill in large surgical cavities after tumoral surgery of the middle 1/3 of the face. The purpose of this technique is to prevent crust formation after radiotherapy, and to improve esthetic results by preventing further cutaneous retraction. They expose their own technique, the results and the indications from 8 cases.

Adult↗

PubMed1989

[Objective evaluation of the masseter and temporal muscles in treatment of Class III occlusion with the monoblock. Initial results].

On ten patients, aged four to 12, with class III functional occlusion, simultaneous electromyographic activity in the masseter and temporal muscles, under conditions of centric occlusion and maximal voluntary contraction, was recorded for 30 seconds. Recording of electromyographic activity was repeated 15 days after initiating treatment with a monoblock device. Results show a lowering of the electrical activity of the aforementioned muscles and, indirectly, of their mechanical capacity during contraction, which may be due to a distention of seid muscles by action of the monoblock. We hereby postulate that, in the muscles under study, a larger previous length results in a lower force of contraction, and such conditions pose a risk of muscular insufficiency.

Activator Appliances↗

PubMed1988

[The temporal muscle flap. Its use in transmaxillary oro-pharyngectomy].

Results are reported of the use of four temporal muscle flaps for reconstruction of the floor of mouth and the velo-amygdalo-palatine region after transmaxillary buccopharyngectomy for malignant tumor. The good vascularization of the temporal flap ensured very satisfactory immediate and long term results.

Aged↗

PubMed2001

Functional anatomy of the human temporal muscle.

The authors carried out an anatomical and magnetic resonance imaging study on the architecture of the mandibular elevator muscles of 169 cadavers. The aim of the study was to define the organisational architecture of the human masseter, temporal and pterygoid muscles. Layer by layer dissection and anatomical cuts in different spatial planes showed that the temporal muscle has a different architecture to the other mandibular elevator muscles. Indeed this muscle does not have the pennate structure of the masseter and pterygoid muscles. Through electromyographic study the behavior of this muscle allowed the establishment of its functional segmentation during the masticatory cycle. Our study showed three distinct anatomical portions in the middle of the temporal muscle which correspond to this functional classification. The MRI study confirmed the results of our anatomical study.

Adult↗

PubMed1994

Tension headache: botulinum toxin paralysis of temporal muscles.

The pathogenetic mechanism of tension headache (TH) is still unknown. The role of pericranial muscle tension in TH is also enigmatic. To evaluate this factor in chronic TH, pericranial muscles were paralysed in 6 chronic TH patients, using botulinum toxin. All patients fulfilled the IHS criteria of chronic TH associated with involvement of the pericranial muscles, but not the current criteria for cervicogenic headache. The patients were followed-up regularly with evaluation of the paralysis, changes in pain intensity, and pressure pain threshold measurements. We primarily only injected the temporal muscle on the one side, using the other side as a control. Contralateral muscles were in some cases injected at a later stage. In our study, we did not find any significant reduction in pain intensity, as measured by the visual analogue scale, nor any changes in pressure pain threshold, as measured by an algometer. On the basis of our observations, we conclude that muscle tension in these muscles possibly plays a minor role in the genesis of chronic TH. In our study, however, we have only treated a limited number of patients, and only one pericranial muscle has been injected systematically. Further studies of various neck/posterior head muscles ought to be performed in order to further evaluate a possible effect of tension in the pericranial musculature in producing this type of pain.

Adult↗

PubMed1980