Oral Biol Res 2018; 42(4): 208-215  https://doi.org/10.21851/obr.42.04.201812.208
Prevalence and influencing factors of dysphagia in elderly patients
Hyo-Jin Son1, Yu-Mi Park2, Sun-Young Yim1, Yu-Ri Heo1, Mee-Kyoung Son1*
1Department of Prosthodontics, School of Dentistry, Chosun University, Gwangju, Korea
2Department of Prosthodontics, Chosun University Dental Hospital, Gwangju, Korea
Correspondence to: Mee-Kyoung Son, Department of Prosthodontics, School of Dentistry, Chosun University, 303 Pilmun-daero, Dong-gu, Gwangju 61452, Korea. Tel: +82-62-220-3820, Fax: +82-62-227-7811, E-mail: son0513@chosun.ac.kr
Received: October 30, 2018; Revised: November 5, 2018; Accepted: November 7, 2018; Published online: December 31, 2018.
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Abstract
The purpose of this study was to identify the risk of dysphagia among patients that visited prosthodontics department, and evaluate the difference in risks arising from oral conditions and disease in order to preliminarily intervene the various influencing factors of dysphagia. A questionnaire was given to patients that were aged 65 years or older who visited the prosthodontics department between September to December 2017. The data was collected and analyzed using the t-test, x2-test and logistic regression analysis. The mean age of the patients was 75 years. Out of 300 patients, 206 patients (68.7%) had a risk of dysphagia. There were statistically signiffcant differences between the –non-risk and risk groups, which included the number of natural teeth, total number of teeth including prosthesis, denture use, denture discomfort, number of tooth brushing, oral dryness, digestive system diseases, and musculoskeletal diseases. Among these, oral dryness was a risk factor while the total number of teeth, including natural teeth and prostheses, served as a protective factor. More than half of the elderly patients were at risk of dysphagia. Oral dryness is influenced by many factors and it should continuously be managed. Patients should fully recover their masticatory function by preserving the remaining teeth and compensating for the missing teeth. A dental practitioner should be fully aware of the risk of dysphagia in elderly patients and be able to intervene and offer proper patient health care in advance through treatment guidelines and education.
Keywords: Aged, Dysphasia, Xerostomia


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