10-year trend of tooth loss and associated factors in a Japanese population-based longitudinal study
Objectives We examined the trend in the number of missing teeth in a Japanese community over a 10-year period and the potential associated explanatory factors.Design Prospective cohort study.Setting A population-based study conducted in 2007, 2012 and 2017 in Japan (Hisayama Study).Participants Resi...
Saved in:
| Main Authors: | , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
BMJ Publishing Group
2021-08-01
|
| Series: | BMJ Open |
| Online Access: | https://bmjopen.bmj.com/content/11/8/e048114.full |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850137059998564352 |
|---|---|
| author | Michiko Furuta Kenji Takeuchi Yoshihiro Shimazaki Toru Takeshita Yukie Shibata Jun Hata Daigo Yoshida Toshiharu Ninomiya Yoshihisa Yamashita Shino Suma Shinya Kageyama Mikari Asakawa |
| author_facet | Michiko Furuta Kenji Takeuchi Yoshihiro Shimazaki Toru Takeshita Yukie Shibata Jun Hata Daigo Yoshida Toshiharu Ninomiya Yoshihisa Yamashita Shino Suma Shinya Kageyama Mikari Asakawa |
| author_sort | Michiko Furuta |
| collection | DOAJ |
| description | Objectives We examined the trend in the number of missing teeth in a Japanese community over a 10-year period and the potential associated explanatory factors.Design Prospective cohort study.Setting A population-based study conducted in 2007, 2012 and 2017 in Japan (Hisayama Study).Participants Residents of a Japanese community aged 40–79 years undergoing dental examination in 2007 (n=2665), 2012 (n=2325) and 2017 (n=2285).Outcome measures The 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.Results The 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.Conclusions These 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. |
| format | Article |
| id | doaj-art-771344471dd040dfb5fa9244f79c9b5b |
| institution | OA Journals |
| issn | 2044-6055 |
| language | English |
| publishDate | 2021-08-01 |
| publisher | BMJ Publishing Group |
| record_format | Article |
| series | BMJ Open |
| spelling | doaj-art-771344471dd040dfb5fa9244f79c9b5b2025-08-20T02:30:58ZengBMJ Publishing GroupBMJ Open2044-60552021-08-0111810.1136/bmjopen-2020-04811410-year trend of tooth loss and associated factors in a Japanese population-based longitudinal studyMichiko Furuta0Kenji Takeuchi1Yoshihiro Shimazaki2Toru Takeshita3Yukie Shibata4Jun Hata5Daigo Yoshida6Toshiharu Ninomiya7Yoshihisa Yamashita8Shino Suma9Shinya Kageyama10Mikari Asakawa11Section of Preventive and Public Health Dentistry, Division of Oral Health, Growth and Development, Faculty of Dental Science, Kyushu University, Fukuoka, JapanDepartment of Preventive Medicine, Nagoya University Graduate School of Medicine, Nagoya, JapanDepartment of Preventive Dentistry and Dental Public Health, School of Dentistry, Aichi Gakuin University, Nagoya, JapanSection of Preventive and Public Health Dentistry, Division of Oral Health, Growth and Development, Faculty of Dental Science, Kyushu University, Fukuoka, JapanSection of Preventive and Public Health Dentistry, Division of Oral Health, Growth and Development, Faculty of Dental Science, Kyushu University, Fukuoka, Japan4 Department of Medicine and Clinical Sciences, Graduate School of Medical Sciences, Kyushu University, Fukuoka, JapanDepartment of Epidemiology and Public Health, Graduate School of Medical Sciences, Kyushu University, Fukuoka, JapanCenter for Cohort Studies, Graduate School of Medical Sciences, Kyushu University, Fukuoka, JapanSection of Preventive and Public Health Dentistry, Division of Oral Health, Growth and Development, Faculty of Dental Science, Kyushu University, Fukuoka, JapanSection of Preventive and Public Health Dentistry, Division of Oral Health, Growth and Development, Faculty of Dental Science, Kyushu University, Fukuoka, JapanSection of Preventive and Public Health Dentistry, Division of Oral Health, Growth and Development, Faculty of Dental Science, Kyushu University, Fukuoka, JapanSection of Preventive and Public Health Dentistry, Division of Oral Health, Growth and Development, Faculty of Dental Science, Kyushu University, Fukuoka, JapanObjectives We examined the trend in the number of missing teeth in a Japanese community over a 10-year period and the potential associated explanatory factors.Design Prospective cohort study.Setting A population-based study conducted in 2007, 2012 and 2017 in Japan (Hisayama Study).Participants Residents of a Japanese community aged 40–79 years undergoing dental examination in 2007 (n=2665), 2012 (n=2325) and 2017 (n=2285).Outcome measures The 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.Results The 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.Conclusions These 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.https://bmjopen.bmj.com/content/11/8/e048114.full |
| spellingShingle | Michiko Furuta Kenji Takeuchi Yoshihiro Shimazaki Toru Takeshita Yukie Shibata Jun Hata Daigo Yoshida Toshiharu Ninomiya Yoshihisa Yamashita Shino Suma Shinya Kageyama Mikari Asakawa 10-year trend of tooth loss and associated factors in a Japanese population-based longitudinal study BMJ Open |
| title | 10-year trend of tooth loss and associated factors in a Japanese population-based longitudinal study |
| title_full | 10-year trend of tooth loss and associated factors in a Japanese population-based longitudinal study |
| title_fullStr | 10-year trend of tooth loss and associated factors in a Japanese population-based longitudinal study |
| title_full_unstemmed | 10-year trend of tooth loss and associated factors in a Japanese population-based longitudinal study |
| title_short | 10-year trend of tooth loss and associated factors in a Japanese population-based longitudinal study |
| title_sort | 10 year trend of tooth loss and associated factors in a japanese population based longitudinal study |
| url | https://bmjopen.bmj.com/content/11/8/e048114.full |
| work_keys_str_mv | AT michikofuruta 10yeartrendoftoothlossandassociatedfactorsinajapanesepopulationbasedlongitudinalstudy AT kenjitakeuchi 10yeartrendoftoothlossandassociatedfactorsinajapanesepopulationbasedlongitudinalstudy AT yoshihiroshimazaki 10yeartrendoftoothlossandassociatedfactorsinajapanesepopulationbasedlongitudinalstudy AT torutakeshita 10yeartrendoftoothlossandassociatedfactorsinajapanesepopulationbasedlongitudinalstudy AT yukieshibata 10yeartrendoftoothlossandassociatedfactorsinajapanesepopulationbasedlongitudinalstudy AT junhata 10yeartrendoftoothlossandassociatedfactorsinajapanesepopulationbasedlongitudinalstudy AT daigoyoshida 10yeartrendoftoothlossandassociatedfactorsinajapanesepopulationbasedlongitudinalstudy AT toshiharuninomiya 10yeartrendoftoothlossandassociatedfactorsinajapanesepopulationbasedlongitudinalstudy AT yoshihisayamashita 10yeartrendoftoothlossandassociatedfactorsinajapanesepopulationbasedlongitudinalstudy AT shinosuma 10yeartrendoftoothlossandassociatedfactorsinajapanesepopulationbasedlongitudinalstudy AT shinyakageyama 10yeartrendoftoothlossandassociatedfactorsinajapanesepopulationbasedlongitudinalstudy AT mikariasakawa 10yeartrendoftoothlossandassociatedfactorsinajapanesepopulationbasedlongitudinalstudy |