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Published on: January 28, 2020
Association of indications for mandibular third molar coronectomy and the Pell and Gregory and the Winter
Rashida N Simons1, Mitchell S Gonesh1, Jacco G Tuk1,2
1Department of Oral and Maxillofacial Surgery, Amsterdam University Medical Center, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, the Netherlands.
Purpose:
The purpose of this study was to determine how the surgeon's decision to perform a mandibular third molar coronectomy or surgical removal is associated with the impaction pattern as classified using Pell and Gregory or Winter's system.
Methods:
This observational, cross-sectional study was conducted on 813 mandibular third molars belonging to 565 patients. All patients were referred for removal of the mandibular third molar and had radiographic signs indicating a close relationship with the inferior alveolar nerve. Panoramic images were classified according to the impaction pattern.
Results:
A coronectomy was performed on 492 (60.5%) mandibular third molars. Most impacted mandibular third molars were class IIB with a mesioangular inclination. A significant association was found between the Pell and Gregory classification and the surgeon's choice (p = 0.002). Winter's classification was not significantly associated with surgeon choice (p = 0.425).
Conclusion:
Mandibular third molar coronectomy is chosen more frequently than surgical removal if molars are class III and position B.
Trial Registration Number:
Not applicable.
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