Author/Editor     Sever, Ecijo
Title     Elektrognatografska študija vpliva okluzijskih determinant na obliko žvečnega cikla glede na spol in prednostno stran žvečenja
Type     monografija
Place     Ljubljana
Publisher     Medicinska fakulteta
Publication year     2003
Volume     str. 110
Language     slo
Abstract     The physiological and rhythmic mobility of the mandible requires coordinated action of the stomatognathic system and its neural control. An alteration in any part of the stomatognathic system is reflected in a change of movement or in a change of the rhythm of movement. Our understanding of changes in physiological conditions and our ability to identify pathological conditions depend on a knowledge as to which determinants influence functional mandibular movements in healthy population and how they are correlated. The author monitored and recorded mandibular movement in a group of young and healthy subjects chewing standardised bolus. Data were analysed using electrognathography and electropantography, and a data base for chewing cycles was created. Eleven parameters of shape and eight time parameters of rhythmic mandibular movement during chewing were analysed in 20 young persons with full dentition, whose mean age was 24,6 years. Computer linked Sirognathograph and a new software programme, COSIG II, developed by the author for this study, were used for this purpose. Chewing cycles, gliding contacts, dental contacts and temporomandibular joint morphology were examined. Mean values of chewing cycles measured in frontal and sagittal projection planes are shown together with time variables. The average duration of the chewing cycle is 0,84 sec, and the mean time during which the mandible remains in the ICP is'0,2 sec. The author used computer pantography (Pantronic, Denar) to evaluate four posterior occlusal determinants and to calculate their mean values. With clinical and electrognathographic measurements he obtained the values of anterior determinants and indicated their significance for, and influence of both occlusal determinants on, the shaping of functional masticatory movements. (Abstract truncated at 2000 characters).
Descriptors     MASTICATION
MANDIBLE
TEMPOROMANDIBULAR JOINT
JAW RELATION RECORD
DENTAL OCCLUSION
ADULT
ELECTRODIAGNOSIS
RADIOGRAPHY, PANORAMIC
COMPUTER SYSTEMS
SEX FACTORS