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Review of Radiographic Anatomy

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Review of Radiographic Anatomy. Dr. Vandana Kumar, DDS, MS. RESTORATIONS. Maxilla. Median Palatine Suture. Median Palatine Suture. Anterior Nasal Spine. Nasal Septum. Nasal Fossae. 1 - Incisive Foramen 2 - Nasal septum 3 - Zygoma. Incisive Foramen. Nose Border & Alar Cartilage.

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slide1
Review of Radiographic Anatomy

Dr. Vandana Kumar, DDS, MS

slide7
Median Palatine Suture

Median Palatine Suture

incisive foramen
1 - Incisive Foramen

2 - Nasal septum

3 - Zygoma

Incisive Foramen
incisive fossa canine fossa
White arrows denote radiolucent area of incisive/canine fossa

Black arrows delineate margin of alar cartilage of the nose

Incisive Fossa & Canine Fossa
malar process zygomatic arch
Malar Process/Zygomatic Arch

1-White arrows denote the malar process

2-Black arrows delineate the lower border of the zygomatic arch

slide25
Genial tubercles

Lingual foramen

Mental Ridge

slide26
Genial tubercles

Lingual foramen

Mental Ridge

slide27
nutrient canals

mandibular tori

mental foramen
Mental Foramen
  • White arrows outline the mental foramen.
  • Black arrows outline apical pathology which is secondary to pulpal exposure from coronal caries
slide33
White arrows indicate external oblique ridge
  • Black arrows delineated internal oblique ridge
concepts of normal panoramic anatomy
Concepts of Normal Panoramic Anatomy

Concept 1

Structures are flattened and spread out

Desirable: mandible, mandibular canal etc.

Undesirable: nasal turbinate and meati

Concept 2

Midline structures may be projected in two ways:

As single, midline structures

As bilateral structures

concept 2
Concept 2

Zone of Single Images:

Single midline structures in this zone will appear on radiograph as single midline structures, e.g. incisor teeth, nasal fossa, anterior nasal spine, soft tissue of nose.

Zone of double Images:

Single midline structures in this zone will appear on the radiograph as bilateral (double) structures,

e.g. hyoid bone, palate, cervical spine

*Double images occur because the object lies between the center of rotation and the film twice during one exposure cycle.

slide38
Hard Palate

Hyoid Bone

concept 3
Concept 3
  • Ghost Images are formed
slide40
REAL IMAGE

GHOST IMAGE

concept 31
Concept 3

Ghost of contra-lateral ramus

Ghost of Hard Palate

concept 4
Concept 4

Soft tissue outlines are visualized

Examples: lips, nasolabial fold, dorsum of

tongue, soft palate, ear and ear lobe.

concept 41
Concept 4

Dorsum of tongue

Soft Palate

Nasolabial fold

concept 5
Concept 5

Air spaces are visualized

  • Examples: maxillary sinus, nasal fossa, air space above tongue, naso-oro-hypopharynx
slide45
Posterior Pharyngeal wall

Palatoglossal air space

slide46
Nasopharyngeal air space

Glossopharyngeal air space

concept 51
Concept 5

Platoglossal Airspace

Maxillary sinuses

Naso-pharyngeal Airspace

concept 6
Concept 6

Areas adjacent to tooth bearing areas are visualized

  • Example: condyle, coronoid process, zygomatic arch, maxillary sinus, nasal fossa, orbit, styloid process, hyoid bone.
concept 61
Concept 6

Articular eminence

Condyle

Glenoid fossa

Sigmoid notch

slide50
Cervical vertebrae

Mandibular foramen

slide51
Lingual Foramen

Hyoid bone

concept 7
Concept 7

Relative Radiolucencies and Radiopacities are seen

  • Machine components
    • Chin Rest
    • Lateral Positioning guides
    • Anterior Positioning guides
quiz time
Quiz Time
  • Write answers on a separate sheet of
  • paper
  • Make sure you do write your name and student ID number
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