Imaging Sci Dent.  2022 Mar;52(1):67-74. 10.5624/isd.20210218.

Influence of mesiodens on adjacent teeth and the timing of its safe removal

Affiliations
  • 1Department of Oral and Maxillofacial Radiology, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
  • 2Department of Oral Diagnosis and Dentomaxillofacial Radiology, Okayama University Hospital, Okayama, Japan
  • 3Department of Dental Informatics, Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
  • 4Oral Examination and Diagnosis Center, Okayama University Hospital, Okayama, Japan

Abstract

Purpose
To focus on the effects of the presence of mesiodens on adjacent teeth and to investigate the timing of its safe removal.
Materials and Methods
Cone-beam computed tomography examinations, obtained at Okayama University Hospital over a three-year period, were inspected. Data were recorded including the number of mesiodens; associated abnormalities; and the relationship with neighboring structures. Depending on multiple factors, the risk of developing complications due to early extraction of a mesiodens was divided into three categories: high, medium, and low risk.
Results
A total of 5,958 cone-beam computed tomography exams were obtained, 460 patients aged 3-85 years were diagnosed with a total of 568 mesiodens, 382 (67.3%) of which were discovered in young patients (age <10 years), and 333 (87.2%) of these were associated with abnormalities. Regarding the risk categories, 11 (1.9%) were considered to be in the high-risk, five (0.9%) in the medium-risk and 552 (97.2%) in the low-risk categories. Moreover, eight out of 11 high-risk mesiodens were extracted and no post-operative complications have been seen.
Conclusion
As the results showed that no postoperative complications were seen in all the extracted cases of high-risk mesiodens, this indicates the possibility of safe extraction at an early age which could reduce related future complications.

Keyword

Tooth; Supernumerary; Cone-Beam Computed Tomography; Tooth Extraction
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