Accession Number : AD0634056

Title :   THE EFFECT OF MASTICATION AND DEGLUTITION ON TOOTH MOBILITY.

Descriptive Note : Rept. for Mar-Jun 65,

Corporate Author : SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TEX

Personal Author(s) : O'Leary ,Timothy J. ; Rudd ,Kenneth D. ; Nabers ,Claude L. ; Stumpf,Arthur J. , Jr

Report Date : APR 1966

Pagination or Media Count : 11

Abstract : The effect of chewing on tooth mobility values immediately after a period of sleep was studied in six subjects. On two separate days, the pre-experimental mobility values of six representative maxillary teeth, Nos. 9 to 14, were assessed between 0400 and 0500 hours. For 10 minutes subjects then chewed and swallowed test rolls of a uniformly firm consistency. Immediately thereafter, the mobility values were again assessed. The pre-post mean differences were significantly different from zero for each tooth (P < .01). The same experimental procedure was carried out on the mandibular test teeth, Nos. 19 to 24, on two days. For the mandibular teeth, the pre-post mean differences were significantly different from zero (P < .001) FOR EVERY ONE OF THE SIX TEST TEETH. Multiple-range test results on mean differences showed that the decrease in mobility on tooth No. 23 was significantly different (P < .05) from all other test teeth except No. 20. The amount of actual tooth contact that occurred during mastication is presumed to be small as the result of prior clinical observations. Thus the forces responsible for intrusion of the test teeth would appear to be primarily those transmitted through the food bolus and those occurring during deglutition. (Author)

Descriptors :   (*TEETH, *MASTICATION), INGESTION(PHYSIOLOGY), MOBILITY, SLEEP, DENTISTRY, MEASUREMENT

Subject Categories : Medicine and Medical Research

Distribution Statement : APPROVED FOR PUBLIC RELEASE