Ventä, I, Vehkalahti, MM, Huumonen, S, Suominen, AL. Prevalence of third molars determined by panoramic radiographs in a population-based survey of adult Finns. Community Dent Oral Epidemiol. 2020; 48: 208– 214. https://doi.org/10.1111/cdoe.12517
Prevalence of third molars determined by panoramic radiographs in a population-based survey of adult Finns
|Author:||Ventä, Irja1; Vehkalahti, Miira M.1; Huumonen, Sisko2,3,4;|
1Department of Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland
2Institute of Dentistry, University of Eastern Finland, Kuopio, Finland
3Diagnostic Imaging Center, Kuopio University Hospital, Kuopio, Finland
4Research Unit of Oral Health Sciences, University of Oulu, Oulu, Finland
5Department of Oral and Maxillofacial Diseases, Kuopio University Hospital, Kuopio, Finland
6Public Health Evaluation and Projection Unit, National Institute for Health and Welfare, Helsinki, Finland
|Online Access:||PDF Full Text (PDF, 0.4 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2022030121291
John Wiley & Sons,
|Publish Date:|| 2022-03-01
Objectives: The aim of the study was to examine the prevalence of third molars in panoramic radiographs in a population-based study of adults aged ≥30 years.
Methods: Out of a sample of 8028 inhabitants of Finland, selected with two-staged stratified cluster-sampling method for the Health 2000 Survey, 5989 participated in clinical oral examination and panoramic radiography. Mean age was 52.5 years (SD 14.6; range 30–97 years). The following variables were included in the analysis: participant characteristics, clinical number of all teeth, and radiographic prevalence and characteristics of third molars. Statistics included chi-squared, Fisher’s exact, and Kruskal-Wallis tests and SAS-SUDAAN calculations.
Results: A total of 5912 third molars in 47.8% of the study population were recorded from panoramic radiographs. At least one impacted third molar was found in 21.9% of the study population. More than half (57.3%) of the remaining third molars were located in the mandible. A preponderance of participants with all third molars missing were observed in the oldest age group, women, those with lower education and those living in the countryside. Third molars or remnants thereof were observed radiographically in 3.9% of clinically edentulous study population.
Conclusions: The panoramic radiographs disclosed many remaining third molars in adult Finns aged ≥30 years. One-third of the third molars located impacted which may cause unexpected need for care.
Community dentistry and oral epidemiology
|Pages:||208 - 214|
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
3142 Public health care science, environmental and occupational health
Field examinations were organized by the National Institute for Health and Welfare in Finland and partly funded by the Finnish Dental Society Apollonia, the Finnish Dental Association and Planmeca Oy.
© 2020 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd. This is the peer reviewed version of the following article: Ventä, I, Vehkalahti, MM, Huumonen, S, Suominen, AL. Prevalence of third molars determined by panoramic radiographs in a population-based survey of adult Finns. Community Dent Oral Epidemiol. 2020; 48: 208– 214, which has been published in final form at https://doi.org/10.1111/cdoe.12517. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.