[The study of normal occlusion's perioral muscle pressure].
OBJECTIVE
To measure the perioral muscle pressure, to realize the relationship between the morphology of dent, occlusion, skeleton and muscle pressure, moreover we established the measuring system and the mini-pressure transducers.


METHODS
Thirty volunteers of normal occlusions aging 18.4-20.2 years old were selected. Mini-pressure transducer were bonded on the surface of the tooth. We measured the muscle pressure at rest and during swalling. The collection, handing, statistics of muscle pressure were finished automatically by the computer system.


RESULTS
Normal occlusion's muscle pressure is related with sex; there isn't large variation in the intra-individual, but there is great variation in the inter-individual; there isn't a force balance between the buccal and lingual sides of the dentition in normal occlusion subjects.


CONCLUSIONS
No matter which kind of occlusion, it has its own stable character of perioral muscle pressure. The buccal and lingual sides force are not equal, the perioral muscle pressure is related with the type of occlusion.
Yuan
H
H
School of Stomatology, Beijing Medical University, Beijing 100081.
Fu
M
M
D000293:Adolescent; D000328:Adult; D003679:Deglutition; D003766:Dental Occlusion; D005260:Female; D006801:Humans; D007206:Individuality; D008297:Male; D009132:Muscles / Q000502:physiology*; D011312:Pressure; D012737:Sex Factors