Yoshihiro Kugimiya1, Yutaka Watanabe2,3, Takayuki Ueda1, Keiko Motokawa2, Maki Shirobe4, Kentaro Igarashi5, Daichi Hoshino6, Tomofumi Takano1, Kaoru Sakurai1, Yu Taniguchi7, Akihiko Kitamura8, Shoji Shinkai9, Hirohiko Hirano2. 1. Removable Prosthodontics and Gerodontology, Tokyo Dental College, Tokyo, Japan. 2. Research Team for Promoting Independence and Mental Health, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan. 3. Gerodontology, Department of Oral Health Science, Faculty of Dental Medicine, Hokkaido University, Sapporo, Japan. 4. Action Research Center for Community Prevention of Frailty, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan. 5. Removable Prosthodontics, Nihon University School of Dentistry at Matsudo, Chiba, Japan. 6. Special Needs Dentistry, Division of Community Based Comprehensive Dentistry, School of Dentistry, Showa University, Tokyo, Japan. 7. Center for Health and Environmental Risk Research, National Institute for Environmental Studies, Ibaraki, Japan. 8. Research Team for Social Participation and Health Promotion, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan. 9. Social Sciences and Human Care, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan.
Abstract
OBJECTIVE: To clarify the rate of oral frailty and oral hypofunction in rural community-dwelling older adults in Japan. BACKGROUND: Recently, the oral function of Japanese older adults has been evaluated multilaterally based on two concepts: oral frailty and oral hypofunction. Oral frailty is defined as a decrease in the oral function accompanied by a decrease in mental and physical functions. Oral hypofunction is a disease where the oral function is comprehensively decreased. However, their rates have not yet been elucidated. MATERIALS AND METHODS: Oral frailty and oral hypofunction were evaluated in 679 older adults from rural areas. To investigate the differences in occurrence rates due to the evaluation methods, one of the subordinate symptoms of oral hypofunction, the reduced occlusal force, was evaluated based on both the occlusal force (main method) and the number of teeth (alternative method). RESULTS: The rate of oral frailty was 22.3% in men and 22.7% in women. The rate of oral hypofunction was 39.0% in men and 46.9% in women. The overall rate of oral hypofunction was 43.6% when the reduced occlusal force of oral hypofunction was evaluated using the main method and 46.4% when evaluated using the alternative method. The proportion of participants with decreased occlusal force, the number of present teeth, oral diadochokinesis, tongue pressure and masticatory performance increased with age in both men and women. CONCLUSION: Among rural community-dwelling older adults, the rate of oral frailty was 22.5% and that of oral hypofunction was 43.6%.
OBJECTIVE: To clarify the rate of oral frailty and oral hypofunction in rural community-dwelling older adults in Japan. BACKGROUND: Recently, the oral function of Japanese older adults has been evaluated multilaterally based on two concepts: oral frailty and oral hypofunction. Oral frailty is defined as a decrease in the oral function accompanied by a decrease in mental and physical functions. Oral hypofunction is a disease where the oral function is comprehensively decreased. However, their rates have not yet been elucidated. MATERIALS AND METHODS: Oral frailty and oral hypofunction were evaluated in 679 older adults from rural areas. To investigate the differences in occurrence rates due to the evaluation methods, one of the subordinate symptoms of oral hypofunction, the reduced occlusal force, was evaluated based on both the occlusal force (main method) and the number of teeth (alternative method). RESULTS: The rate of oral frailty was 22.3% in men and 22.7% in women. The rate of oral hypofunction was 39.0% in men and 46.9% in women. The overall rate of oral hypofunction was 43.6% when the reduced occlusal force of oral hypofunction was evaluated using the main method and 46.4% when evaluated using the alternative method. The proportion of participants with decreased occlusal force, the number of present teeth, oral diadochokinesis, tongue pressure and masticatory performance increased with age in both men and women. CONCLUSION: Among rural community-dwelling older adults, the rate of oral frailty was 22.5% and that of oral hypofunction was 43.6%.
Authors: Yukiko Hatanaka; Junichi Furuya; Yuji Sato; Risako Taue; Yoshiki Uchida; Toshiharu Shichita; Tokiko Osawa Journal: Int J Environ Res Public Health Date: 2022-02-14 Impact factor: 3.390