Trends in Self-Rated Oral Health and Its Associations with Oral Health Status and Oral Health Behaviors in Japanese University Students: A Cross-Sectional Study from 2011 to 2019

Momoko Nakahara, Naoki Toyama, Daisuke Ekuni (), Noriko Takeuchi, Takayuki Maruyama, Aya Yokoi, Daiki Fukuhara, Nanami Sawada, Yukiho Nakashima and Manabu Morita
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Momoko Nakahara: Department of Preventive Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan
Naoki Toyama: Department of Preventive Dentistry, Academic Field of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan
Daisuke Ekuni: Department of Preventive Dentistry, Academic Field of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan
Noriko Takeuchi: Department of Preventive Dentistry, Okayama University Hospital, Okayama 700-8558, Japan
Takayuki Maruyama: Department of Preventive Dentistry, Academic Field of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan
Aya Yokoi: Department of Preventive Dentistry, Academic Field of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan
Daiki Fukuhara: Department of Preventive Dentistry, Okayama University Hospital, Okayama 700-8558, Japan
Nanami Sawada: Department of Preventive Dentistry, Okayama University Hospital, Okayama 700-8558, Japan
Yukiho Nakashima: Department of Preventive Dentistry, Okayama University Hospital, Okayama 700-8558, Japan
Manabu Morita: Department of Preventive Dentistry, Academic Field of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama 700-8558, Japan

IJERPH, 2022, vol. 19, issue 20, 1-13

Abstract: Self-rated oral health (SROH) is a valid, comprehensive indicator of oral health status. The purpose of this cross-sectional study was to analyze how oral health behaviors and clinical oral status were associated with SROH and how they had changed over the course of nine years in Japanese university students. Data were obtained from 17,996 students who underwent oral examinations and completed self-questionnaires from 2011 to 2019. Oral status was assessed using the decayed and filled teeth scores, bleeding on probing (BOP), probing pocket depth, the Oral Hygiene Index-Simplified (OHI-S), oral health behaviors, and related factors. SROH improved from 2011 to 2019. The logistic regression model showed that university students who were female and had a high daily frequency of tooth brushing, no BOP, no decayed teeth, no filled teeth, and a low OHI-S score and were significantly more likely to report very good, good, or fair SROH. An interaction effect was observed between survey year and regular dental check-ups (year × regular dental check-ups). The improvement trend in SROH might be associated with changes in oral health behaviors and oral health status.

Keywords: self-rated oral health; oral health behaviors; caries; gingivitis; oral hygiene; oral health; behavioral sciences (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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