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Updated: Feb 11, 2026

Author Spotlight: Three-Dimensional Cephalometric Landmark Annotation Demonstration on Human Cone Beam Computed Tomography Scans
Published on: September 8, 2023
Mandibular canal branching assessed with cone beam computed tomography
Mauricio Augusto Aquino de Castro1, Sâmila Gonçalves Barra2, Manuel Oscar Lagravere Vich3
1School of Dentistry, Federal University of Minas Gerais, Antonio Carlos Ave., 6627-Pampulha, Belo Horizonte, MG, 31270-010, Brazil.
Mandibular canal branching (MCB) occurs in 41.1% of dental patients, often near premolars and retromolars. Identifying MCB via cone beam computed tomography (CBCT) is crucial for preventing nerve injury during dental procedures.
Area of Science:
- Dentistry
- Radiology
- Anatomy
Background:
- The mandibular canal contains the inferior alveolar nerve, vital for dental procedures.
- Anatomical variations, like mandibular canal branching (MCB), increase neurovascular injury risk.
- Cone beam computed tomography (CBCT) is a key imaging modality for dental anatomy.
Purpose of the Study:
- To determine the prevalence of mandibular canal branching (MCB).
- To describe the anatomical locations of MCB.
- To investigate potential associations between MCB and pathologies.
Main Methods:
- Analysis of 700 standardized CBCT scans.
- Evaluation for the presence and location of MCB.
- Statistical analysis including descriptive statistics and Chi-squared test.
Main Results:
- MCB was identified in 41.1% of the scans.
- No significant gender-based difference in MCB prevalence was observed.
- MCB was most prevalent in the premolar and retromolar regions.
- Pathologies, particularly periapical lesions, were frequently associated with MCB in the molar region (77.8%).
Conclusions:
- Mandibular canal branching is highly prevalent, as shown by CBCT.
- MCB is commonly found in premolar and retromolar areas.
- Accurate diagnosis of MCB and associated pathologies is essential for safe dental practice.
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