Reasons for extraction of permanent teeth in Japan

Manabu Morita, Toshihide Kimura, Masaru Kanegae, Akira Ishikawa, Tatsuo Watanabe

Research output: Contribution to journalArticlepeer-review

102 Citations (Scopus)


Abstract— Eight hundred forty‐nine Japanese dentists were asked to record the reason for every tooth extraction of permanent teeth during 1 week in each of four seasons. The reasons were assigned to six groups: dental caries, periodontal disease, eruption problems, trauma, orthodontics and other reasons. Thirty‐eight to 40% of the dentists returned the forms in each season, relating to a total of 11 175 extracted teeth. Overall, caries was the most frequent reason for tooth extraction (55.4%), followed by periodontal disease (38.0%). The females lost more teeth due to caries than did the males. In the ≥ 16 age groups, caries was the main reason for tooth extraction. However, periodontal disease became principal only in the males aged 46–65 yr. Anterior teeth, especially in the mandible, represented the highest percentage of periodontal extractions. A considerable difference in the major reason for maxillary tooth loss was observed between both sexes. Maxillary premolars and molars in the males were extracted for periodontal disease as much as for caries, whereas canes was the predominant reason for loss of all maxillary teeth in the females. 1994 Munksgaard

Original languageEnglish
Pages (from-to)303-306
Number of pages4
JournalCommunity dentistry and oral epidemiology
Issue number5PT1
Publication statusPublished - Oct 1994


  • dental caries
  • periodontal disease
  • tooth extraction

ASJC Scopus subject areas

  • Dentistry(all)
  • Public Health, Environmental and Occupational Health


Dive into the research topics of 'Reasons for extraction of permanent teeth in Japan'. Together they form a unique fingerprint.

Cite this