Stability of mandibular position in continuous vowel phonation.
The stability of the mandibular positions during continuous phonation of the five vowels [( a], [e], [i], [o], [u]) and the relationship between each position and the rest position were examined for 30 subjects (males, 23 to 35 years of age) using the mandibular kinesiograph. Each subject had a complete or nearly complete natural dentition with no marked occlusal abnormalities. The mandibular position during continuous phonation of the vowel [i] appeared stable and was closely related to the rest position. It is thus suggested that the use of continuous [i] phonation is a viable method for determining the occlusal vertical dimension.
Moriya
N
N
Hiroshima University School of Dentistry.
Morimoto
S
S
Ohkawa
S
S
Nagasawa
T
T
Tsuru
H
H
D000328:Adult; D003766:Dental Occlusion; D006801:Humans; D008297:Male; D008334:Mandible / Q000502:physiology; D010699:Phonation; D014716:Vertical Dimension