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10-year trend of tooth loss and associated factors in a Japanese population-based longitudinal study

BMJ open, 2021-08, Vol.11 (8), p.e048114-e048114 [Peer Reviewed Journal]

Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ. ;2021 Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ. This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/ . Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ. 2022 ;ISSN: 2044-6055 ;EISSN: 2044-6055 ;DOI: 10.1136/bmjopen-2020-048114 ;PMID: 34408043

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  • Title:
    10-year trend of tooth loss and associated factors in a Japanese population-based longitudinal study
  • Author: Furuta, Michiko ; Takeuchi, Kenji ; Takeshita, Toru ; Shibata, Yukie ; Suma, Shino ; Kageyama, Shinya ; Asakawa, Mikari ; Hata, Jun ; Yoshida, Daigo ; Shimazaki, Yoshihiro ; Ninomiya, Toshiharu ; Yamashita, Yoshihisa
  • Subjects: Age groups ; Cardiovascular disease ; Classification ; Dental Caries - epidemiology ; Dentistry and Oral Medicine ; Edentulous ; Humans ; Japan - epidemiology ; Longitudinal Studies ; Oral hygiene ; Population ; Prospective Studies ; Prostheses ; Teeth ; Tooth Loss - epidemiology ; Trends
  • Is Part Of: BMJ open, 2021-08, Vol.11 (8), p.e048114-e048114
  • Description: ObjectivesWe examined the trend in the number of missing teeth in a Japanese community over a 10-year period and the potential associated explanatory factors.DesignProspective cohort study.SettingA population-based study conducted in 2007, 2012 and 2017 in Japan (Hisayama Study).ParticipantsResidents of a Japanese community aged 40–79 years undergoing dental examination in 2007 (n=2665), 2012 (n=2325) and 2017 (n=2285).Outcome measuresThe number of missing teeth, periodontal condition, dental caries experience, dental plaque index and oral health behaviours were evaluated each year. The longitudinal analysis of variation in these factors were assessed using mixed models.ResultsThe age-adjusted and sex-adjusted mean number of missing teeth decreased with time (6.80 in 2007, 6.01 in 2012 and 4.99 in 2017). The mean clinical attachment level (CAL), prevalence of periodontitis and dental plaque index decreased over the study period, while dental caries experience slightly increased. The level of oral health behaviour increased over time. Poisson mixed models showed that changes in mean CAL and dental caries experience were positively associated with the change in the number of missing teeth over time. Linear mixed models showed that changes in dental plaque index and no regular dental visit were positively associated with changes in mean CAL.ConclusionsThese findings suggest that a decreasing trend regarding the number of missing teeth in Japan might be associated with improvements in the periodontal condition due to changes in oral hygiene level and oral health behaviour.
  • Publisher: England: BMJ Publishing Group LTD
  • Language: English
  • Identifier: ISSN: 2044-6055
    EISSN: 2044-6055
    DOI: 10.1136/bmjopen-2020-048114
    PMID: 34408043
  • Source: ProQuest One Psychology
    BMJ Open Access Journals
    GFMER Free Medical Journals
    MEDLINE
    PubMed Central
    ROAD: Directory of Open Access Scholarly Resources
    ProQuest Central
    DOAJ Directory of Open Access Journals
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