Neural conduction of the Myo-Monitor stimulus: A quantitative analysis

Jankelson, B; Sparks, Samuel; Crane, Patrick F.; Radke, John

doi:10.1016/0022-3913(75)90100-6

Cited by 52 publications

(13 citation statements)

References 4 publications

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“…Repetitive stimuli were delivered at 1.5 sec intervals for a period of 60 minutes which resulted in rhythmic contractions of (1) the masticatory muscles which are innervated by the mandibular division of the trigeminal nerve (V) and (2) the facial muscles which are innervated by the superficial fibers of the facial nerve (VII). [42][43][44][45][46] The mandibular division of the trigeminal nerve (V) is located deep to the mandible, which is stimulated superficially through the notch that exists between the coronoid and condylar processes of the mandible, i.e. anterior to the tragus of each ear.…”

Section: Mandibular Trackingmentioning

confidence: 99%

Establishment of a Temporomandibular Physiological State with Neuromuscular Orthosis Treatment Affects Reduction of TMD Symptoms in 313 Patients

Cooper¹,

Kleinberg²

2008

CRANIO®

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The objective of this investigation was to test the hypothesis that alteration of the occlusions of patients suffering from temporomandibular disorders (TMD) to one that is neuromuscularly, rather than anatomically based, would result in reduction or resolution of symptoms that characterize the TMD condition. This hypothesis was proven correct in the present study, where 313 patients with TMD symptoms were examined for neuromuscular dysfunction, using several electronic instruments before and after treatment intervention. Such instrumentation enabled electromyographic (EMG) measurement of the activities of the masticatory muscles during rest and in function, tracking and assessment of various movements of the mandible, and listening for noises made by the TMJ during movement of the mandible. Ultra low frequency and low amplitude, transcutaneous electrical neural stimulation (TENS) of the mandibular division of the trigeminal nerve (V) was used to relax the masticatory muscles and to facilitate location of a physiological rest position for the mandible. TENS also made it possible to select positions of the mandible that were most relaxed above and anterior to the rest position when the mandible was moved in an arc that began at rest position. Once identified, the neuromuscular occlusal position was recorded in the form of a bite registration, which was subsequently used to fabricate a removable mandibular orthotic appliance that could be worn continuously by the patient. Such a device facilitated retention and stabilization of the mandible in its new-found physiological position, which was confirmed by follow up testing. Three months of full-time appliance usage showed that the new therapeutic positions achieved remained intact and were associated with improved resting and functioning activities of the masticatory muscles. Patients reported overwhelming symptom relief, including reduction of headaches and other pain symptoms. Experts consider relief of symptoms as the gold standard for assessment of effectiveness of TMD treatment. It is evident that this outcome has been achieved in this study and that taking patients from a less to a more physiological state is an effective means for reducing or eliminating TMD symptoms, especially those related to pain, most notably, headaches.

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Section: Mandibular Trackingmentioning

confidence: 99%

Establishment of a Temporomandibular Physiological State with Neuromuscular Orthosis Treatment Affects Reduction of TMD Symptoms in 313 Patients

Cooper¹,

Kleinberg²

2008

CRANIO®

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“…However, there is now good evidence that neither TMD nor related conditions like fibromyalgia, chronic lower back pain, and tension-type headache are caused by abnormal patterns of muscle activity (see Lund et al, , 1991Lund et al, , 1993. Finally, the electrical stimulator that is supposed to activate muscle spindle afferents in the masseteric nerve (Jankelson et al, 1975a) has been shown to stimulate the superficial masseter muscle directly (Dao et al, 1988). Although measurement of limitations in movement is done routinely in the differential diagnosis and monitoring of intracapsular conditions, there is no theoretical advantage to using electronic instruments for this rather than a ruler.…”

Section: Diagnostic Validitymentioning

confidence: 99%

Validity of Diagnostic and Monitoring Tests Used for Temporomandibular Disorders

1995

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Currently, diagnosis of temporomandibular disorders (TMD) depends on a comprehensive history and physical examination, supplemented, when indicated, by images of hard and soft tissues. However, there are electronic diagnostic devices being marketed to acquire other measures described as relevant to TMD and to use these for diagnosis of TMD and for monitoring the effects of treatment. This paper reviews the capacity of several devices to measure these variables accurately and reliably and to assess the theoretical basis of each of these tests. Diagnostic ability was established, when possible, according to the commonly accepted measures of sensitivity, specificity, and positive predictive values. It was found that many tests lack theoretical validity, that measurement validity tends to be poor, and that diagnostic ability can be even worse than chance, because of a high percentage of false-positive diagnoses. Based on these findings, the use of these instruments in clinical practice is inappropriate at this time and may lead to the treatment of large numbers of subjects who have no disorder.

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“…The patient received transcutaneous electrical nerve stimulation (TENS) using a Myomonitor J2 (Myotronics) to relax muscles. 10,11 The Myo-centric position (MCP) was recorded as a reference jaw position. 12,13 The intensity of electric stimuli by TENS was increased slightly to move the mandible approximately 1.5 mm above the rest position on a neuromuscular trajectory.…”

Section: Jaw Movement Assessmentmentioning

confidence: 99%

Thirty-year follow-up of a TMD case treated based on the neuromuscular concept

2014

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Aim: Occlusal therapy is employed to alleviate the symptoms of a temporomandibular disorder (TMD) at times. However, the long-term effect of occlusal therapy in the masticatory system is not well understood. This case study aims to present a 30-year follow-up of a TMD case. Methodology: The patient developed TMD with intermittent closed lock of the left temporomandibular joint (TMJ). Chief complaints included trismus, pain, and noise of the left TMJ during function. The patient's occlusal disharmony was assessed with use of electronic instruments and corrected based on the neuromuscular concept. A minimum-invasive and reversible approach using adhesive occlusal restorations was used. Results: The jaw movement and masticatory muscle activity assessed at the 7-and 23-year follow-ups revealed that the established occlusion was well adapted, and re-established the patient's functional occlusion system. The patient has been free from TMD symptoms with the corrected occlusion for 30 years. Conclusions: Occlusal reconstruction based on the neuromuscular concept can be stably integrated into the patient's functional occlusion system.

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Neural conduction of the Myo-Monitor stimulus: A quantitative analysis

Cited by 52 publications

References 4 publications

Establishment of a Temporomandibular Physiological State with Neuromuscular Orthosis Treatment Affects Reduction of TMD Symptoms in 313 Patients

Establishment of a Temporomandibular Physiological State with Neuromuscular Orthosis Treatment Affects Reduction of TMD Symptoms in 313 Patients

Validity of Diagnostic and Monitoring Tests Used for Temporomandibular Disorders

Thirty-year follow-up of a TMD case treated based on the neuromuscular concept

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