Association of salivary flow rate with oral function in a sample of community-dwelling older adults in Japan.

OBJECTIVE: The purpose of this study was to determine the association of stimulated salivary flow rate with perceived salivary flow and various oral symptoms among a group of independently living elderly persons. STUDY DESIGN: The subjects were 351 persons (189 men and 162 women) with a mean age of 66.7 +/- 4.3 years. Stimulated whole saliva was collected with the mastication method. Self-assessed chewing ability and satisfaction with oral function also were evaluated. A multiple logistic regression analysis was used to determine whether an independent variable was statistically significant. RESULTS: Hyposalivation (< 0.5 mL/min) was significantly associated with gender (odds ratio, 1.67; P < .05). Hyposalivation (odds ratio, 3.40; P <.05) and low perceived salivary flow (odds ratio, 5.35; P <.05) were significantly associated with dissatisfaction with tasting. Low perceived salivary flow was also significantly associated with self-assessed chewing ability (odds ratio, 3.32; P <.01). CONCLUSION: This study suggested that hyposalivation and low perceived salivary flow were related to chewing ability and satisfaction with tasting foods.

Application of short-form oral health impact profile on elderly Japanese.

OBJECTIVES: The purpose of this study was to use the oral health impact profile (OHIP-14) to evaluate the impact of oral disease on the quality of life of a group of independently-living elderly persons in an urban area of Japan. SUBJECTS: A total of 1244 participants of the Senior Citizen's College, who attended the lectures once a week. They were community-dwelling, independently-living people over 60 years of age. MEASUREMENTS: Japanese version of the short-form OHIP-14. RESULTS: Internal reliability for the 14 items overall was very high (Cronbach's alpha = 0.95). Report of 'painful aching' and 'uncomfortable to eat' were the two most highly scored items using the mean sum OHIP-14 score. A multiple logistic regression analysis indicated that the sum OHIP-14 score had significant associations with self-assessment of general health, dental status, and a perceived need for dental treatment. However, age, gender, dissatisfaction with financial status or education level was not significantly associated with the sum OHIP-14. Compared with that of other countries, the items were ranked similarly, whereas the perceived magnitudes of the problems were quite different from other population. CONCLUSIONS: The OHIP-14 in Japanese had a high internal reliability, was significantly associated with dental status and comparable ranking for items when compared with studies from other countries.