Effect of Mandibular Third Molars on Anterior Crowding Assessed by CBCT

Ketenci Çay, Fatmanur; Gül Yılmaz, Büşra; Çiğdem Keleş, Elif; İlgüy, Dilhan

doi:10.15517/m1pyas52

Authors

Fatmanur Ketenci Çay Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Yeditepe University, Istanbul, Turkey. Author https://orcid.org/0000-0002-9618-1082
Büşra Gül Yılmaz Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, University of Health Sciences, Istanbul, Turkey. Author https://orcid.org/0009-0006-7316-6708
Elif Çiğdem Keleş Department of Biostatistics and Medical Informatics, Faculty of Medicine, Yeditepe University, Istanbul, Turkey. Author https://orcid.org/0000-0002-2479-1236
Dilhan İlgüy Department of Oral and Maxillofacial Radiology, Faculty of Dentistry, Yeditepe University, Istanbul, Turkey. Author https://orcid.org/0000-0003-2050-3425

DOI:

https://doi.org/10.15517/m1pyas52

Keywords:

Molar third; Crowding; Index; Tomography; Measure; Tooth extraction; Orthodontics.

Abstract

The role of mandibular third molars in the development of anterior dental crowding has long been debated, with conflicting evidence regarding their contribution. This study aimed to evaluate the effect of presence and angulation of mandibular third molars on anterior dental crowding. This study employed 138 cone-beam computed tomography scans and Little's Irregularity Index to explore the relationship between mandibular third molars and anterior dental crowding. The CBCT scans were categorized based on the third molars’ status as impacted, erupted, or absent. Moreover, impacted teeth were classified using Winter’s classification.The analysis revealed no statistically significant relationship between the presence or angulation of third molars and the severity of anterior dental crowding. These findings suggested that other factors rather than mandibular third molars may also be effective in anterior dental crowding. The results contribute to the ongoing debate by suggesting that third molars may not be the primary determinant of anterior crowding, emphasizing the need for more comprehensive research to clarify their role and the necessity of their prophylactic removal.

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