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Intraoral Radiographic Anatomy

Course Number: 601

Summary of Mandibular Landmarks

Table 2. Summary of Mandibular Radiographic Landmarks.

LandmarkBrief DescriptionRadiolucent / RadiopaquePeriaplicalBilateral / UnilateralAlternate Name
External Oblique RidgeDiagonal LineRadiopaqueMolarBilateralExteranal Oblique Line
Genial TubercleDoughnut-shapedRadiopaqueCental IncisorUniilateralMental Spine
Inferior Border of MandibleHorizontal BandRadiopaqueAny MandibularBilateralLower Border
Internal Oblique RidgeDiagonal LineRadiopaqueMolarBilateralMylohyoid Line
Lingual ForamenPinpoint dotRadiolucentCentral IncisorBilateral
Mandibular CanalTubularRadiolucentPremolar
Molar
BilateralInferior Alveolar Nerve Canal
Mental ForamenCircularRadiolucentPremolar
Canine
Bilateral
Mental FossaDiffuseRadiolucentCentral IncisorUnilateral
Mental RidgeInverted VRadiopaqueCentral Incisor
Lateral Incisor
Canine
Bilateral
Submandibular FossaDiffuseRadiolucentPremolar
Molar
BilateralSubmandibular Gland
Fossa
Mandibular Fossa