Impact of loss of removable dentures on oral health after the Great East Japan Earthquake

A retrospective cohort study

Yukihiro Sato, Jun Aida, Kenji Takeuchi, Kanade Ito, Shihoko Koyama, Masako Kakizaki, Mari Sato, Ken Osaka, Ichiro Tsuji

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Purpose: The Great East Japan Earthquake in March 2011 destroyed many communities, and as a result many older victims lost their removable dentures. No previous studies have documented the prevalence of denture loss after a natural disaster or examined its negative impact. Therefore, investigation of the consequences of such a disaster on oral health is of major importance from a public health viewpoint. Materials and Methods: Three to five months after the disaster, questionnaire surveys were conducted in two coastal towns, Ogatu and Oshika, located in the area of Ishinomaki city, Miyagi prefecture. Among the survey participants, 715 individuals had used one or more removable dentures before the disaster, and these comprised the population analyzed. The effect of denture loss on oral health-related quality life (OHRQoL) was examined by a modified Poisson regression approach with adjustment for sex, age, subjective household economic status, dental caries, tooth mobility, psychological distress (K6), access to a dental clinic, physical activity, and town of residence. Results: There were 123 (17.2%) participants who had lost their dentures. In comparison with participants who had not lost their dentures, those lacking dentures showed a significantly higher relative risk for eating difficulties (RR = 2.65, 95%CI = 1.90-3.69), speech problems (RR = 4.37, 95%CI = 2.46-7.76), embarrassment upon smiling, laughing, or showing their teeth (RR = 5.32, 95%CI = 2.34-12.1), emotional distress (RR = 2.38, 95%CI = 1.41-4.03), and problems related to social interaction (RR = 6.97, 95%CI = 1.75-27.7). Conclusions: Denture loss appeared to impair eating and speaking ability, thus discouraging communication with others. Public health intervention after major natural disasters should include dental care.

Original languageEnglish
Pages (from-to)32-36
Number of pages5
JournalJournal of Prosthodontics
Volume24
Issue number1
DOIs
Publication statusPublished - 01-01-2015
Externally publishedYes

Fingerprint

Earthquakes
Dentures
Oral Health
Japan
Cohort Studies
Retrospective Studies
Disasters
Public Health
Eating
Tooth Mobility
Smiling
Dental Clinics
Aptitude
Dental Care
Dental Caries
Interpersonal Relations
Ambulatory Care Facilities
Tooth
Communication
Economics

All Science Journal Classification (ASJC) codes

  • Dentistry(all)

Cite this

Sato, Yukihiro ; Aida, Jun ; Takeuchi, Kenji ; Ito, Kanade ; Koyama, Shihoko ; Kakizaki, Masako ; Sato, Mari ; Osaka, Ken ; Tsuji, Ichiro. / Impact of loss of removable dentures on oral health after the Great East Japan Earthquake : A retrospective cohort study. In: Journal of Prosthodontics. 2015 ; Vol. 24, No. 1. pp. 32-36.
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Impact of loss of removable dentures on oral health after the Great East Japan Earthquake : A retrospective cohort study. / Sato, Yukihiro; Aida, Jun; Takeuchi, Kenji; Ito, Kanade; Koyama, Shihoko; Kakizaki, Masako; Sato, Mari; Osaka, Ken; Tsuji, Ichiro.

In: Journal of Prosthodontics, Vol. 24, No. 1, 01.01.2015, p. 32-36.

Research output: Contribution to journalArticle

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T1 - Impact of loss of removable dentures on oral health after the Great East Japan Earthquake

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AU - Sato, Yukihiro

AU - Aida, Jun

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