What kind of third molars are disease-free in a population aged 30 to 93 years?

Irja Ventä, Miira M. Vehkalahti, Anna L. Suominen

Research output: Contribution to journalArticleScientificpeer-review


ObjectivesThe aim of the study was to characterize third molars that have remained disease-free in a representative sample of the Finnish population aged 30years and older.Materials and methodsTwo-staged stratified cluster sampling (N=8028) was used, and 6005 subjects participated in a clinical oral examination and panoramic radiography. Disease-free third molars were characterized as follows: no dentinal caries, no filling, periodontal pocket depths of neighboring second molars less than 4mm, and no radiographic pathological findings. Logistic regression analyses served for assessment of the strength of characteristics of third molars for disease-free status.ResultsOf the subjects, 2653 (44%) had at least one third molar. Of them, the majority (62%) had only diseased third molars, 16% had only disease-free ones, and 22% had both. Participants had in total 5665 third molars; 29% of them were disease-free. Female gender, higher level of education, and younger age were related to disease-free status (P

Original languageEnglish
JournalClinical Oral Investigations
Issue number3
Pages (from-to)1015-1022
Number of pages8
Publication statusPublished - Mar 2019
MoE publication typeA1 Journal article-refereed

Fields of Science

  • Adult population
  • Epidemiology
  • Panoramic radiograph
  • Pathology
  • Third molar
  • 313 Dentistry
  • 3126 Surgery, anesthesiology, intensive care, radiology

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