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Bamgbose, Babatunde O. Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
Okada, Shunsuke Okayama University Hospital
Hisatomi, Miki Okayama University Hospital Kaken ID publons researchmap
Yanagi, Yoshinobu Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences ORCID Kaken ID publons researchmap
Takeshita, Yohei Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
Abdu, Zahrau Saleh Department of Oral Diagnostic Sciences, Faculty of Dentistry, Bayero University Kano
Ekuase, Edugie J. Department of Chemistry and Forensic Sciences, Savannah State University
Asaumi, Jun-ichi Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
Abstract
Purpose The prevalence of supernumerary teeth has been reported to be between 0.1% and 3.8%. The aim of this study was to determine the prevalence, clinical significance, and associated pathologies of fourth molars based on a retrospective study and a literature review. Materials and Methods A 5-year retrospective prevalence study was conducted at the Department of Oral Diagnosis and Dentomaxillofacial Radiology of Okayama University Hospital, Okayama, Japan. The study involved extracting data from the digital records of patients from January 1, 2013 through December 31, 2017. The sampling frame included all patients who had panoramic radiographs, cone-beam computed tomography (CT), and multislice CT images during the period under review. Results A total of 26,721 cases were reviewed and 87 fourth molars were identified. The prevalence of fourth molars in the 5-year study at Okayama was calculated as 0.32%. The mean age of patients with a fourth molar was 30.43 years, and the male-to-female ratio was 1:0.98. The vast majority of cases were in the maxilla (92%) and had normal shapes (89.7%); furthermore, 82.8% of cases were unerupted. Conclusion The prevalence of fourth molars in the study population was found to be 0.32%, and fourth molars occurred with approximately equal frequency in males and females. Fourth molars were more common in the maxilla and were predominantly unerupted and small.
Keywords
Tooth
Supernumerary
Odontoma
Odontogenic Cyst
Published Date
2019-05-25
Publication Title
Imagining Science in Dentistry
Volume
volume49
Issue
issue1
Publisher
Korean Academy of Oral and Maxillofacial Radiology
Start Page
27
End Page
34
ISSN
22337822
NCID
AA12764256
Content Type
Journal Article
language
英語
OAI-PMH Set
岡山大学
Copyright Holders
© 2019 by Korean Academy of Oral and Maxillofacial Radiology
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isVersionOf https://doi.org/10.5624/isd.2019.49.1.27