Relationship between bite force and salivary flow in older adults

Objective To examine the relationship between bite force and stimulated salivary flow rate in older adults. Study design The study sample consisted of 934 independent-living, cognitively healthy Japanese older adults 60 to 84 years of age. The maximal bite force was measured with pressure-sensitive...

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Published in:Oral surgery, oral medicine, oral pathology, oral radiology and endodontics oral medicine, oral pathology, oral radiology and endodontics, 2007-10, Vol.104 (4), p.510-515
Main Authors: Ikebe, Kazunori, DDS, PhD, Matsuda, Ken-ich, DDS, Morii, Kentaro, DDS, PhD, Hazeyama, Tomohiro, DDS, Kagawa, Ryosuke, DDS, Ogawa, Taiji, DDS, Nokubi, Takashi, DDS, PhD
Format: Article
Language:English
Subjects:
Age Factors
Aged
Aged, 80 and over
Biological and medical sciences
Bite Force
Cross-Sectional Studies
Dental Stress Analysis
Dentistry
Female
Humans
Japan
Linear Models
Male
Medical sciences
Middle Aged
Otorhinolaryngology. Stomatology
Saliva - secretion
Secretory Rate
Statistics, Nonparametric
Stimulation, Chemical
Surgery
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Summary:Objective To examine the relationship between bite force and stimulated salivary flow rate in older adults. Study design The study sample consisted of 934 independent-living, cognitively healthy Japanese older adults 60 to 84 years of age. The maximal bite force was measured with pressure-sensitive sheets, and stimulated whole saliva was collected using the mastication method. Results The mean stimulated salivary flow rate was 1.36 ± 0.97 mL/min. In bivariate analysis, the stimulated salivary flow rate was significantly lower in females and subjects with daily multiple medications ( P < .01). Multiple linear regression analysis showed that the stimulated salivary flow rate was significantly associated with sex (standardized partial regression coefficient: partial β = .22; P < .001), bite force (partial β = .18; P < .001), and multiple daily medications (partial β = −.12; P < .001). Conclusions It is suggested that reduced bite force is associated with a decline in stimulated whole salivary flow rate independent of sex and medication in older adults.
ISSN:1079-2104
1528-395X
DOI:10.1016/j.tripleo.2006.12.006