Tehran University of Medical Sciences Iranian Journal of Public Health 2251-6085 53 11 2024 11 04 2528 2537 EN Hee-Jung Lim Department of Dental Hygiene, College of Health Science, Eulji University, Seongnam, Republic of Korea Jun-Yeong Kwon Department of Dental Hygiene, Kyungwoon University, Gumi, Republic of Korea Na-Yeon Tak Department of Dentistry, Graduate School, Kyung Hee University, Seoul, Republic of Korea Ae-Jung Im Department of Dental Hygiene, Hallym Polytechnic University, Chuncheon, Republic of Korea Hyoung-Joo Kim Department of Dental Hygiene, College of Health Science, Graduate School, Eulji University, Seongnam, Republic of Korea 2024 01 27 2024 04 02 Background: Dry mouth, masticatory discomfort, and swallowing in older individuals are important factors affecting overall health. To improve their quality of life, efforts are required to improve their oral function. Therefore, this study implemented a training program evaluating oral function to confirm improvements in swallowing. Methods: The study was conducted for approximately 4 months, from Jul to Oct 2023. Participants aged 65 yr or older were selected from welfare facilities in the metropolitan region, with 24 participants in both the intervention and control groups. Results: As a result of a study conducted on oral function training program, the intervention group exhibited significant improvements in the simulated swallowing flow rate (P <0.05), bite force (P <0.001), and tongue pressure (P <0.001). Conclusion: The oral function training program effectively improved simulated swallowing flow rate, bite force, and tongue pressure. Consequently, there is an opportunity to implement oral function training programs at accessible welfare centers for older individuals in the community. https://ijph.tums.ac.ir/index.php/ijph/article/view/34434 https://ijph.tums.ac.ir/index.php/ijph/article/download/34434/8396