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At least 73 records · Page 4Linked to original sources
PubMed2003

Incidence of cervical branch injury with "marginal mandibular nerve pseudo-paralysis" in patients undergoing face lift.

The anatomy of the cervical and marginal mandibular branches of the facial nerve is reviewed. In the senior author's practice, "pseudoparalysis of the marginal mandibular nerve" due to cervical branch injury occurred in 34 of 2002 superficial musculoaponeurotic system-platysma face lifts (1.7 percent) and was associated with a full recovery in 100 percent of cases within a time period ranging from 3 weeks to 6 months. Cervical branch injury can be distinguished from marginal mandibular nerve injury by the fact that the patient will be able to evert the lower lip because of a functioning mentalis muscle.

Adult↗
PubMed2000

Temporally patterned activity recorded from mandibular nerves of the isolated subesophageal ganglion of Manduca.

We recorded bursts of motor neuron activity from closer and opener mandibular nerves of isolated subesophageal ganglia (SOG) and compared them with the feeding motor pattern of intact Manduca larvae. Closer bursts recorded from isolated SOG lasted from 1 to 4s, interburst interval durations lasted from 2 to 49s, and within- and between-animal variability was great. In contrast, motor activity bursts (EMGs) measured from mandibular closer muscles of intact, feeding animals lasted 0.08 to 0.24s with interburst intervals of 0.26 to 0.57s. Variability both within and between animals was small. Bath application of 10(-4)M octopamine to the isolated SOG tended to increase frequency and reduce the duration of bursts, so that they became more like those recorded during feeding.

Journal Article↗
PubMed1997

Primary malignant schwannoma involving simultaneously the right Gasserian ganglion and the distal part of the right mandibular nerve. Case report.

A 66-year-old man presented to our Department with trigeminal neuralgia of the third division of the right trigeminal nerve. He also complained of some difficulty in mastication because of a tumour mass in the right lower jaw. A brain CT scan, X-rays of the lower jaw and viscerocranium CT scan revealed a malignant schwannoma of the right Gasserian ganglion involving simultaneously the distal end of the right mandibular nerve. The patient was operated on and has undergone a course of external irradiation. Seven years later, he is living a normal life. The value of the preoperative diagnosis of this extremely rare pathology is discussed because it seems that this tumour is radiosensitive.

Aged↗
PubMedDate not supplied

Long-term pain control in trigeminal neuralgia with local anesthetics using an indwelling catheter in the mandibular nerve.

OBJECTIVE: The authors sought to determine the usefulness of long-term continuous trigeminal nerve block with local anesthetics using an indwelling catheter in a patient with trigeminal neuralgia. DESIGN: The study design included pain control in a patient with trigeminal neuralgia until the time of neurosurgical operation. SETTING: The study was conducted in the Dental Hospital of Tokyo Medical and Dental University. PATIENT: The patient was a 78-year-old woman with trigeminal neuralgia in the right maxillary region. Her pain could not be controlled by carbamazepine and was unbearable. INTERVENTION: The authors estimated the patient's pain intensity, quality, and locality using a visual analog scale to determine the effectiveness of continuous nerve block. OUTCOME MEASURES: Visual analog scores were measured during treatment. The treatment term was divided into three periods according to the difference of the catheter location and injection protocol (premandibular nerve block, infuser injection, and patient-controlled analgesia [PCA] pump injection). The authors also examined the patient's general condition and blood concentration of drugs. RESULTS: The visual analog values were 44.8 +/- 3.6, 26.7 +/- 3.5, and 11.9 +/- 3.1 mm in each period, respectively. The value in the PCA pump infusion period was significantly lower than that in the other periods. No side effects of the local anesthetics were observed on the patient's systemic condition. CONCLUSIONS: The authors controlled trigeminal neuralgia pain by blocking the mandibular nerve with local anesthetics administered through an indwelling catheter. Because the continuous nerve block with local anesthetics is reversible and only mildly toxic, this method is beneficial for pain control in patients with trigeminal neuralgia scheduled to undergo microvascular decompression.

Aged↗
PubMed2002

Mechanosensory and thermosensory changes across the border of impaired sensitivity to pinprick after mandibular nerve injury.

PURPOSE: The study goal was to determine how sensory function varies across the border of impaired sensitivity to pinprick in patients with mandibular nerve injuries. PATIENTS AND METHODS: Borders of decreased sensitivity to pinprick were mapped in 15 patients who reported altered sensation. Four mechanoreceptive, 2 thermoreceptive, and 2 thermonociceptive functions were studied at 5 sites separated by 0.6 cm across the border. The tests were repeated to evaluate day-to-day consistency in the pattern of variation for each sensory measure. RESULTS: The estimates of sensory function were not found to vary in a systematic manner from outside to inside the pinprick-impaired area for all patients for any of the 8 tests. However, for every test, some patients exhibited large variations. On average, the magnitudes of loss in contact detection, subjective intensity of light touch, and direction discrimination were greatest; the magnitudes of loss in 2-point perception and in heat and cold pain perception were least. Some patients provided no evidence of impairment on certain tests. For some patients, the estimates suggested increased sensitivity within the pinprick-impaired area (eg, to noxious cold stimuli). CONCLUSIONS: Although certain patients exhibit impairment, there is no obligatory loss in light touch, 2-point perception, direction discrimination, or temperature perception across the border of decreased sensitivity to pinprick. The differences among patients suggest that the data from individual patients should be evaluated in clinical studies and in clinical practice. Researchers should not rely solely on average values and summary statistics.

Adult↗
PubMed1995

Marginal mandibular nerve palsy due to compression by a cervical hard collar.

A case history of a trauma patient who developed a palsy of the marginal mandibular nerve from compression by a cervical spine hard collar is presented. After clinical and radiographic screening found no evidence of occult cervical spine pathology, the collar was removed; the palsy resolved uneventfully during the next 2 days.

Adult↗
PubMedDate not supplied

A comparative study of direct mandibular nerve block and the Akinosi technique.

A study is made of 56 patients subjected to lower molar extraction, comparing the efficacy of the Akinosi technique as an alternative to direct or conventional mandibular nerve block in two groups of 28 subjects each. The parameters evaluated were pain in response to puncture, percentage positive aspiration, latency, pain during the intervention and complications. Patient pain in response to puncture was comparatively less intense and frequent with the Akinosi technique. The latency to anesthesia was briefer with conventional mandibular block than with the Akinosi technique (2.9 versus 3.8 minutes). Pain during the intervention and the duration of the anesthetic effect were similar for both techniques. The patients anesthetized with the Akinosi technique required more buccal nerve reinforcement infiltrations to complete the procedure. The anesthetic failure rates were 10.7% and 17.8% for the conventional and Akinosi technique, respectively. It is concluded that while the Akinosi technique can be used to extract lower molars, direct mandibular block offers superior anesthetic performance.

Adolescent↗
PubMed1997

The "ART" mandibular nerve block: a new approach to accomplishing regional anesthesia.

A new technique involving the use of a local block to anesthetize the inferior alveolar nerve (V3), a branch of the mandibular division of the trigeminal or fifth cranial nerve, is described. Clinicians fail to administer a successful mandibular block in as many as 15 per cent of all cases. This paper reviews and outlines some of the more common reasons for this failure, and how to avoid them. A short description of other techniques are presented, some of which should be reserved for isolated cases and not used on a routine basis. By avoiding or eliminating the reasons for mandibular block failure, and using the new block described in this paper, clinicians should be able to reduce the failure rate to much lower levels.

Anesthesia, Conduction↗
PubMed1997

An anatomical study of the motor distribution of the mandibular nerve for a masseteric-facial anastomosis to restore facial function.

On account of the complex anatomy at the base of skull, surgery here may result in post operative cranial n. deficits. Facial palsy is often feared and its effects upon the patient's psychological and emotional well-being can be catastrophic. The modest results and the side effects of the facio-hypoglossal anastomosis used for facial rehabilitation have led us to consider an anastomosis between a motor branch of the trigeminal n. and the facial n. Dissection has allowed us to demonstrate that the masseteric n. offers the characteristics and the relationships which should make such an anastomosis feasible.

Cadaver↗