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A Comparative Study of Oral Health Status between International and Japanese University Student Patients in Japan

Division for Health Service Promotion, the University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
School of Oral Health Sciences, Faculty of Dentistry, Tokyo Medical and Dental University, Tokyo 113-8549, Japan
Oral and Maxillofacial Surgery, Dentistry and Orthodontics, the University of Tokyo Hospital, Tokyo 113-8655, Japan
Graduate School of Medicine, the University of Tokyo, Tokyo 113-8655, Japan
Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Department of Gastrointestinal Surgery, Peking University Cancer Hospital & Institute, Beijing 100142, China
Author to whom correspondence should be addressed.
Healthcare 2018, 6(2), 52;
Received: 9 March 2018 / Revised: 18 May 2018 / Accepted: 20 May 2018 / Published: 22 May 2018
(This article belongs to the Special Issue Dental Care)
PDF [1218 KB, uploaded 22 May 2018]


Background: The number of international students enrolled in universities in Japan is increasing. To provide better oral care services for international students, we have to understand their oral environment and dental health behaviors. However, few studies have investigated the oral health status of international university students. The object of the present study was to clarify the current oral status of international university students. Methods: The subjects were students who visited the dental department at the University of Tokyo’s Health Services Center between April 2012 and March 2013. Our medical records were reviewed with regard to the following items: attributes (nationality, gender, and age); chief complaint (reason for visit); history of dental treatment; mean number of decayed (D), missing (M) or filled (F) teeth as a single (DMFT) index; degree of calculus deposition; gingival condition; and oral hygiene status. Results: The records of 554 university students (138 international and 416 non-international students) were analyzed; 88.4% of the 138 international students were from Asian countries (n = 122), of which 47.1% were from China and 10.9% from Korea, followed by North America (5.8%), Europe (4.3%), and Africa (1.5%). Although no significant differences were found regarding the history of dental treatment between international and non-international students (49.3% and 48.8%, respectively), international students had a significantly higher dental caries morbidity rate (60.1%) than non-international students (49.0%). The international students showed a significantly higher DMFT value compared with the non-international students: 5.0 and 4.0 per individual, respectively. Severe calculus deposition was observed in international students compared with non-international students (51.9% and 31.7%, respectively). Conclusions: The international university students had poorer oral health status than the non-international students, even though the result might include many uncertainties and possible biases. View Full-Text
Keywords: oral health; university student; check-up; DMFT oral health; university student; check-up; DMFT

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Ohsato, A.; Abe, M.; Ohkubo, K.; Yoshimasu, H.; Zong, L.; Hoshi, K.; Takato, T.; Yanagimoto, S.; Yamamoto, K. A Comparative Study of Oral Health Status between International and Japanese University Student Patients in Japan. Healthcare 2018, 6, 52.

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