Rest vertical dimension determined by electromyography with biofeedback as compared to conventional methods

The mandibular rest position and electromyography—a review

“…A study by Van Mens & de Vries (1984) also found that the mean interocclusal clearance at the rest position determined by biofeedback was greater than that obtained by phonation and swallowing in both dentate and edentulous subjects. However, in contrast to Feldman et al (1978), the feedback method was found to result in greater variation in the rest position than did the conventional location method.…”

“…In order to compare the resting vertical dimension determined by electromyography with that obtained using conventional methods, Feldman, Leupold & Staling (1978) displayed to their subjects an oscilloscope signal from the temporahs muscle. A nose to chin measurement was taken when the lowest level of muscular activity was observed and this dimension compared with that obtained by swallowing and phonation.…”

Determination of occlusal vertical dimension for complete dentures patients: an updated review

“…Although several studies (10,(52)(53)(54)(55)(56)(57)(58)(59)(60) found stability in the mandible at a constant position at rest and recommended the use of this position for the determination of the OVD, many other studies (32,35,(61)(62)(63)(64)(65)(66)(67)(68)(69)(70)(71)(72)(73)(74)(75)(76) found a large variation and instability of the mandible at rest position and concluded against relying solely on physiologic rest position for the determination of the OVD. The physiologic rest position varies between individuals, from time to time in the same sitting and between sittings in the same patient, and between dental practitioners (8,32,62).…”

Interocclusal Clearance during Speech and in Mandibular Rest Position

“…The mandibular position is determined essentially by the neuromuscularly induced reflex tonus of the masticatory muscles, with the synergists and antagonists of the orofacial system being in dynamic equilibrium and, according to various authors, a neuronal minimum activity being induced as a response to the permanently active gravitation [12,17,21,47]. With an electromyographic lead of the excitation potential, the so-called EMG rest position is defined as a state with neuronal minimum activity of the masticatory muscles [15,28,34,36,46].…”

“…Die Unterkieferhaltung wird im Wesentlichen durch den neuromuskulär determinierten Reflextonus der Kaumuskulatur bestimmt, wobei sich die Synergisten und Antagonisten des orofazialen Systems in einem dynamischen Gleichgewicht befinden und nach Untersuchungen verschiedener Autoren eine neuronale Mindestaktivität als Reaktion auf die permanent wirkende Gravitation besteht [12,17,21,47]. Bei elektromyographischer Ableitung der Erregungspotentiale wird als sog.…”