Intraoral Radiographic Anatomy
Radiographic Density
• Radiopacity
• Radiolucency
• Page 24 of Dr. Beck’s Notes
Follicle
Trabecular Pattern
Trabecular Pattern
Sparse Trabeculation Inferiorly
Dental Papilla
Mandibular Posterior Region
Alveolar Ridge
External Oblique Ridge
Internal Oblique Ridge
(Mylohyoid Ridge)
Mandibular Canal
Enlarged PDL Space?
Inferior Border of Mandible
Inf. Alveolar Canal
Oblique Ridges
Mental Foramen
Anterior Looping of the Canal
Posteriorly Positioned Foramen
Mandibular Tori
Anterior Mandible
Genial Tubercle
Genial Tubercle
Nutrient Canals
Mental Fossa
• Radiolucent depression between
alveolar ridge and mental ridge
Mental Ridge
Liar, Liar!! Do Our Eyes Lie?
All Those Horizontal Lines!
Alveolar Ridge
Floor / Wall of Maxillary Sinus
Zygomatic Arch (Inf. Border)
Zygomatic Process of Maxilla
Floor of Nasal Cavity
Tuberosity
Hamular Notch and Process
Coronoid Process
Resorption of Coronoid
Process?
Clinical Hamular Notch
Tuberosity
Maxillary Sinus
• Floor of sinus
extends to alveolar
crest due to missing
teeth
Floor / Wall of Maxillary Sinus
• Wavy outline of the
sinus
• Relatively smooth
outline
• Sinus occupies interradicular space
• Inverted Y formed
by nasal fossa and
maxillary sinus
Nasolabial Fold/ Cheek Mass
Maxillary Anterior Region
Anterior Nasal Spine
• Radiopaque
• V-shaped
Floor of Nasal Cavity
• Extends bilaterally
away from ANS
Incisive Foramen
• Variable size and
shape, border
• Variable position,
due to angulation of
x-ray beam
Nasopalatine Canal
• Transmits nasopalatine
nerves and vessels
• Terminates in incisive
foramen
• Not always seen
Sup. Foramina of Nasopalatine
• On each side of
nasal septum
• Mostly seen when h
vertical angle
Nasal Septum
• Superimposition of
septal cartilage and
vomer
• Deviated septum
Inferior Concha
• In the nasal fossa
• Away from the
septum
Nasal Mucosa
Intermaxillary Suture
• Median suture
• Extends from alveolar
crest through ANS,
posteriorly to distal
aspect of hard palate
• Uniform width
• Variable shape
– Angulation of central ray
Soft Tissue Outline of Nose
Nasal turbinates
Foramena of Stenson and
Scarpa
Opening of nasolachrimal duct