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Related Concept Videos

Cranial Bones: Lateral View01:27

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The lateral view of the cranium is dominated by temporal, sphenoid, and ethmoid bones.
The temporal bone forms the lower lateral side of the skull. The temporal bone is subdivided into several regions. The flattened upper portion is the squamous portion of the temporal bone. Below this area and projecting anteriorly is the zygomatic process of the temporal bone, which forms the posterior portion of the zygomatic arch. Posteriorly is the mastoid portion of the temporal bone. Projecting...
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Cranial Bones: Superior and Posterior View01:14

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The superior view of the cranium shows the frontal and paired parietal bones.
The frontal bone is the single bone that forms the forehead. At its anterior midline, between the eyebrows, there is a slight depression called the glabella. The frontal bone also forms the supraorbital margin of the orbit. Near the middle of this margin is the supraorbital foramen, the opening that provides passage for a sensory nerve to the forehead. The frontal bone is thickened just above each supraorbital margin,...
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Updated: Sep 13, 2025

A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible
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Variation in mandibular canal position in different sagittal skeletal patterns: a CBCT study.

Ana B Teodoro1, Karine Evangelista2, Douglas Rangel Goulart3

  • 1Universidade Federal de Goiás - Programa de Pós-Graduação, Faculdade de Odontologia, Goiânia, Goiás, Brasil.

Acta Odontologica Latinoamericana : AOL
|July 31, 2025
PubMed
Summary

The mandibular canal

Keywords:
cone beam computed tomographymalocclusionmandiblemandibular nerve

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Area of Science:

  • Anatomy
  • Oral and Maxillofacial Surgery
  • Radiology

Background:

  • Mandibular morphology exhibits variations influencing skeletal patterns (Class I, II, III).
  • The mandibular canal's anatomical position is crucial for surgical planning.
  • Cone-beam computed tomography (CBCT) is commonly used for its evaluation.

Purpose of the Study:

  • To conduct a 3D analysis of the mandibular canal's position in adults across different skeletal patterns (Class I, II, III).
  • Utilize CBCT image segmentation and 3D measurements for precise positional assessment.

Main Methods:

  • Acquired 75 CBCT images from a database.
  • Performed 3D analysis using ITK-SNAP and 3D Slicer software.
  • Segmented the mandible and mandibular canal, created 3D models, and took vertical, transverse, and 3D measurements.

Main Results:

  • Mandibular canal position varies with skeletal pattern, sex, and gonial angle.
  • Class III patterns show reduced supero-inferior proximity to the oblique line.
  • Mandibular canal position correlates with gonial angle variations and may approach the lingual cortex.

Conclusions:

  • Mandibular canal position is a critical factor in tomographic evaluations for diagnosis and surgical planning.
  • Consideration of mandibular canal position is especially important for sagittal ramus osteotomies.