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New Method of Avoiding Underestimation of Caries Incidence and Its Association with Possible Risk Factors in Japanese University Students: A Prospective Cohort Study

Author

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  • Daisuke Ekuni

    (Department of Preventive Dentistry, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1, Shikata-cho, Kita-ku, Okayama 700-8558, Japan)

  • Naoki Toyama

    (Department of Preventive Dentistry, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1, Shikata-cho, Kita-ku, Okayama 700-8558, Japan)

  • Yoshiaki Iwasaki

    (Health Service Center, Okayama University, 2-1-1, Tsushima-naka, Kita-ku, Okayama 700-8530, Japan)

  • Manabu Morita

    (Department of Preventive Dentistry, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 2-5-1, Shikata-cho, Kita-ku, Okayama 700-8558, Japan)

Abstract

The objective of this three-year prospective cohort study was to investigate the association between a new definition of an increase in dental caries and risk factors in Japanese young adults. Data of Okayama University students who volunteered to undergo oral examinations and answer questionnaires in 2015 and 2018 were analyzed. The status of filled teeth and the status of occlusal/proximal surfaces of filled or decayed teeth were recorded. An increase in dental caries was defined as a change in the status of filled teeth and/or an increase in dental caries of occlusal and proximal surfaces. A total of 393 participants (18.2 ± 0.8 years) were analyzed. First and second molars showed a high prevalence of dental caries. Of the participants, 144 (36.6%) showed an increase in dental caries. In all the participants and in the females, the decayed, missing, and filled teeth (DMFT) score and history of orthodontic treatment at baseline were significantly associated with an increase in dental caries ( p < 0.05) in logistic regression analyses. In the males, the DMFT score and the daily frequency of snacking (≥2) at baseline were significantly associated with an increase in dental caries ( p = 0.04). The DMFT score and history of orthodontic treatment at baseline can be risk factors for an increase in dental caries using the new definition in young adults.

Suggested Citation

  • Daisuke Ekuni & Naoki Toyama & Yoshiaki Iwasaki & Manabu Morita, 2022. "New Method of Avoiding Underestimation of Caries Incidence and Its Association with Possible Risk Factors in Japanese University Students: A Prospective Cohort Study," IJERPH, MDPI, vol. 19(4), pages 1-12, February.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:4:p:2490-:d:755027
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    References listed on IDEAS

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    1. Hikari Saho & Ayano Taniguchi-Tabata & Daisuke Ekuni & Aya Yokoi & Kouta Kataoka & Daiki Fukuhara & Naoki Toyama & Md Monirul Islam & Nanami Sawada & Yukiho Nakashima & Momoko Nakahara & Junya Deguchi, 2020. "Association between Household Exposure to Secondhand Smoke and Dental Caries among Japanese Young Adults: A Cross-Sectional Study," IJERPH, MDPI, vol. 17(22), pages 1-9, November.
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    Cited by:

    1. Ichiro Sumita & Naoki Toyama & Daisuke Ekuni & Takayuki Maruyama & Aya Yokoi & Daiki Fukuhara & Yoko Uchida-Fukuhara & Momoko Nakahara & Manabu Morita, 2022. "The Impact of Oral Health Behaviors, Health Belief Model, and Absolute Risk Aversion on the Willingness of Japanese University Students to Undergo Regular Dental Check-Ups: A Cross-Sectional Study," IJERPH, MDPI, vol. 19(21), pages 1, October.

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