Association between household exposure to secondhand smoke and dental caries among japanese young adults: A cross-sectional study

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, Yoko Uchida-Fukuhara, Toshiki Yoneda, Yoshiaki Iwasaki, Manabu Morita

Research output: Contribution to journalArticlepeer-review

Abstract

The long-term effects of secondhand smoke (SHS) on dental caries among Japanese young adults remain unclear. The purpose of this cross-sectional study was to evaluate whether household exposure to SHS is associated with dental caries in permanent dentition among Japanese young adults. The study sample included 1905 first-year university students (age range: 18–19 years) who answered a questionnaire and participated in oral examinations. The degree of household exposure to SHS was categorized into four levels according to the SHS duration: no experience (−), past, current SHS < 10 years, and current SHS ≥ 10 years. Dental caries are expressed as the total number of decayed, missing, and filled teeth (DMFT) score. The relationships between SHS and dental caries were determined by logistic regression analysis. DMFT scores (median (25th percentile, 75th percentile)) were significantly higher in the current SHS ≥ 10 years (median: 1.0 (0.0, 3.0)) than in the SHS—(median: 0.0 (0.0, 2.0)); p = 0.001). DMFT ≥ 1 was significantly associated with SHS ≥ 10 years (adjusted odds ratio: 1.50, 95% confidence interval: 1.20–1.87, p < 0.001). Long-term exposure to SHS (≥10 years) was associated with dental caries in permanent dentition among Japanese young adults.

Original languageEnglish
Article number8623
Pages (from-to)1-9
Number of pages9
JournalInternational journal of environmental research and public health
Volume17
Issue number22
DOIs
Publication statusPublished - Nov 2 2020

Keywords

  • Dental caries
  • Permanent dentition
  • Secondhand smoke
  • Young adult

ASJC Scopus subject areas

  • Public Health, Environmental and Occupational Health
  • Health, Toxicology and Mutagenesis

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