Relationship between the Tonic Elevator Mandibular Activity and the Vertical Dimension during the States of Vigilance and Hypnosis

Abstract

The variation of the tonic EMG elevator mandibular activity was studied as well as the consequent variation of the vertical dimension in two different experimental states: those of vigilance and hypnosis. In the state of vigilance, normal values of tonic EMG activity were recorded and a space of inocclusion (X = 2.22 mm) coincident with the postural mandibular position. Under hypnosis a significant reduction of the tonic EMG activity was observed (43 to 50%), together with a great increase of the inocclusion space (X = 8.90 mm).

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Notes on contributors

Arturo Manns

Dr. Arturo E. Manns has practiced for the past 23 years in the area of Oral Rehabilitation and Dysfunction. He received his D.D.S. from the University of Chile and was awarded two fellowships in West Germany. Currently, Dr. Manns is a professor of oral physiology in the Department of Prosthodontics at the Universidad de Chile. He also serves as head of Oral Physiology Laboratory and the Department of Physiology and Biophysics at the same university. Dr. Manns has lectured extensively, taught postgraduate courses, and published several articles and a book. He is past president of the Chilean Society of Oral Rehabilitation and a member of the Latin American Society of Gnathology and the International Association for Dental Research.

Ricardo Voss Zuazola

Dr. Ricardo Voss Zuazola received his degree from the University of Chile in 1969. He is presently assistant professor in the Department of Orthodontic Dental School at the University of Valparaiso, Chile. He is also a professor of Clinical Hypnosis. Dr. Zuazola serves as chairman of the Chilean Group of Clinical Hypnosis and is a member of the American Society of Clinical Hypnosis, The International Society of Hypnosis, and The American Association of Orthodontists.

Rames Sirhan

Rames Sirhan, D.D.S.

Dr. Sirhan graduated from the Universidad de Valparaiso in 1986. He specialized in maxillofacial surgery at San Juan de Dios Hospital in Santiago, Chile. Dr. Sirhan has participated as both lecturer and member of mini conferences in several national and international congresses. He is co-author of three publications. Dr. Sirhan is a member of the Chilean Group of Clinical Hypnosis and has done postgraduate studies in Clinical Hypnosis with Dr. Zuazola.

Mariela Quiroz

Mariela Quiroz, D.D.S.

Dr. Quiroz graduated from the Valparaiso University and is currently an assistant professor of Endodontics at the same university. She also maintains a private practice and serves as pediodontist to the Chilean Navy. Dr. Quiroz is a member of the Endodontics Society of Valparaiso and the Scientific Department of the Colegio de Cirujano Dentistas de Valparaiso.

Mariano Rocabado

Mariano Rocabado, R.P.T.

Mariano Rocabado, who has been in clinical practice for 20 years, is now full professor in the Department of Orthodontics. He is director of the Head, Neck, and Maxillofacial Dysfunctions Program at the Dental School at the University of Chile, the Rocabado Institute, and the Centro Rehabilitation Integral, Santiago, Chile. After receiving his degree, Professor Rocabado studied in France on a scholarship for specialization on the spine. He has lectured worldwide and published two major works.