Reasons for Tooth Extractions in Japan: The Second Nationwide Survey.

Autor:	Suzuki S; Department of Epidemiology and Public Health, Tokyo Dental College, Tokyo, Japan. Electronic address: suzukiseitarou@tdc.ac.jp., Sugihara N; Department of Epidemiology and Public Health, Tokyo Dental College, Tokyo, Japan., Kamijo H; Department of Social Security for Dentistry, Tokyo Dental College, Tokyo, Japan; 8020 Promotion Foundation, Tokyo, Japan., Morita M; Department of Preventive Dentistry, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan., Kawato T; Department of Oral Health Sciences, Nihon University School of Dentistry, Tokyo, Japan., Tsuneishi M; Japan Dental Association Research Institute, Tokyo, Japan., Kobayashi K; 8020 Promotion Foundation, Tokyo, Japan., Hasuike Y; 8020 Promotion Foundation, Tokyo, Japan; Japan Dental Association, Tokyo, Japan., Sato T; 8020 Promotion Foundation, Tokyo, Japan; Japan Dental Association, Tokyo, Japan.
Jazyk:	angličtina
Zdroj:	International dental journal [Int Dent J] 2022 Jun; Vol. 72 (3), pp. 366-372. Date of Electronic Publication: 2021 Jun 28.
DOI:	10.1016/j.identj.2021.05.008
Abstrakt:	Background: More than 10 years have passed since the first nationwide study on the reasons for tooth extraction in Japan. In the present study, we conducted the second nationwide survey to update the previous data. Methods: This was a descriptive study. A sample population consisting of 5,250 dentists was selected by systematic random sampling using the 2018 membership directory of the Japan Dental Association. The reason for each permanent tooth extraction was documented by each dentist during a period of 1 week from June 4 to June 10, 2018. A questionnaire was provided for documentation. Reasons for tooth extraction were categorised into 6 groups as follows: caries, periodontal disease, fracture, orthodontics, impacted teeth, and others. Results: A total of 2345 identified dentists responded to the questionnaire (recovery rate: 44.8%). Information on 7809 extracted teeth from 6398 patients was obtained. Periodontal disease was the main reason for tooth extraction for both sexes (men: 40.4%, women: 34.9%). Caries accounted for 30.2% of tooth extractions among men and 29.0% among women. Periodontal disease was predominant in the groups older than 55 years of age. Dental fracture accounted for 16.8% of tooth extractions among men and 19.2% among women. Conclusions: Caries and periodontal disease are still the main reasons for tooth extraction in Japan. Moreover, dentists should note that fractures accounted for approximately one-fifth of permanent tooth extractions after the age of 45 years. Competing Interests: Conflict of Interest None disclosed. (Copyright © 2021 The Authors. Published by Elsevier Inc. All rights reserved.)
Databáze:	MEDLINE
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