A comparative study of mastication between complete denture wearers and dentate subjects.
A computer system was used for simultaneously collecting and processing mandibular movements and the myoelectric activities of the masticatory muscles of 15 dentate subjects and 11 complete denture wearers. The displacement, velocity, cycle of mandibular movements, and the muscular mean potentials were indices in observing mastication. A good complete denture should perform with physiologic characteristics, and restore masticatory function and oral health. The kinetic energy from the velocities of lateral and vertical directions can serve for the chewing and comminution of food, but lateral comminution may affect denture retention. The mean myoelectrical potentials of the mandibular elevator muscles of complete denture wearers tend to increase at the opening phase; however, the potentials decrease at the closing phase.
Shi
C S
CS
Department of Prosthodontics, Fourth Military Medical University, Stomatological College, Xian Shaanxi, People's Republic of China.
Ouyang
G
G
Guo
T W
TW
D000328:Adult; D000704:Analysis of Variance; D001732:Bite Force; D003824:Denture, Complete; D004576:Electromyography; D001330:Electronic Data Processing; D004594:Electrophysiology; D005260:Female; D006801:Humans; D007568:Jaw / Q000502:physiology; D007574:Jaw Relation Record; D008297:Male; D008409:Mastication / Q000502:physiology*; D008410:Masticatory Muscles / Q000502:physiology*; D008838:Microcomputers; D008875:Middle Aged; D009066:Mouth, Edentulous / Q000503:physiopathology; D009068:Movement; D016059:Range of Motion, Articular; D013997:Time Factors