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Purpose: The aim of this study is to evaluate the relationship between the inclination/impaction depth and root proximity to the inferior alveolar canal/lingual plate on a millimeter scale using CBCT scans., Methods: 340 CBCT scans of the mandibular third molar (M3) of 219 patients were evaluated for this cross-sectional study. After adjustment of the 3D orientation of the individual's jaws, the study variables including the angulation between M3 and second molar (M2)/occlusal plane (OP), and the distance of mesial (M)/distal (D) roots of M3 from the inferior alveolar canal (IAC) and lingual plate (LP) were measured. Winter's classification was used for the specification of teeth angulation. The vertical position of each M3 was then evaluated using the 3D view window (based on Pell & Gregory classification). The Spearman correlation coefficient was used for reporting the correlation between quantitative variables. The One-way ANOVA test and the Welch analysis were used for inter-group comparisons. Finally, a multivariant analysis of variances was performed., Results: Most third molars had a mesioangular inclination (52.1%), and vertical inclination (25.9%) was in second place. There was no significant correlation between angulation and age or the D/LP. A strong positive correlation between M3:M2 and M3:OP was observed (0.983). Furthermore, there was a weak negative correlation between M/IAC or M/LP and angulation (- 0.16 and - 0.13, respectively). Concerning Winter's classification, the relationship between D/IAC and angulation was statistically significant (P = 0.003). Furthermore, teeth in position A had lesser inclination compared to those with B or C positions. Multivariate analysis revealed that there was no statistically significant relationship between particular combinations of inclination-impaction depth and proximity of the M3 roots to the IAC or LP (P = 0.211)., Conclusions: The findings of the current study revealed that there is a strong correlation between M3:M2 and M3:OP. The D/IAC was the only variable that had a significant relationship with the angulation of these teeth. Moreover, the roots of horizontally inclined teeth with position A were the closest to the LP and the farthermost to the IAC., (© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)

This report describes an unusual case of trilobate Stafne bone cavity in a 72-year-old male asymptomatic patient, presenting as a radiolucency in the left mandibular body with an irregular peripheral border and a central area of reduced density on panoramic radiograph.

We describe a case of an orthokeratinised odontogenic cyst (OOC) in a 49-year-old man, which presented as a submucosal fluctuant, non-tender, soft nodule distal to the inferior right first molar that could be considered a peripheral counterpart of the intraosseous OOC., (Copyright © 2011 The British Association of Oral and Maxillofacial Surgeons. Published by Elsevier Ltd. All rights reserved.)

The presence of deeply horizontally impacted lower second and third molars is unusual. The arrested eruption of the lower second and third molars can determine disturbances of mastication and aesthetics. Moreover, an increased risk of caries in the distal side of the first lower molar is possible. Different therapeutic approaches could be proposed for second and third molar impaction and malposition. In this article, we report the management and the outcome of the surgical treatment of a patient with impacted mandibular second and third molars.

Introduction: Coronoid fractures are relatively rare fractures of the craniofacial skeleton, but typically occur concomitantly with high-velocity craniofacial trauma to the midface and lateral mandible. Management of coronoid fractures may vary, but when surgical excision is indicated, treatment frequently involves an intraoral approach through a posterior intraoral incision along the mandibular ramus. Here, the authors present an alternative and novel approach to the coronoid process based on the Keen approach to the lateral midface., Technical Note: The authors present a patient with a left zygomatico-maxillary complex fracture and left coronoid fracture. After disimpaction of the zygomatico-maxillary complex fracture, a maxillary vestibular incision in the gingivobuccal sulcus was made. After subperiosteal dissection, the maxillary fracture was exposed and fixated. A modified Keen approach was used to expose the coronoid process, perform temporalis myotomy, and excise the fracture fragment., Discussion: Compared to the classic intraoral approach to coronoidectomy, the modified Keen approach is a quick, versatile technique that allows for direct visualization of the coronoid process without the use of endoscopy, facilitates fixation of concurrent midfacial fractures, and utilizes an anterior intraoral incision that is easy to retract and close. For these reasons, the modified Keen technique for coronoidectomy should be considered in the treatment of trismus when an intraoral approach is indicated., Competing Interests: The authors report no conflicts of interest., (Copyright © 2020 by Mutaz B. Habal, MD.)