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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Review of Radiographic Anatomy

Dr. Vandana Kumar, DDS, MS

Median Palatine Suture

Median Palatine Suture

Incisive foramen

1 - Incisive Foramen

2 - Nasal septum

3 - Zygoma

Incisive Foramen

Soft tissue shadows

Lip Line

Nasolabial fold

Soft tissue Shadows

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 fossa

1-White arrows denote the malar process

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

Genial tubercles fossa

Lingual foramen

Mental Ridge

Genial tubercles fossa

Lingual foramen

Mental Ridge

nutrient canals fossa

mandibular tori

Mental foramen
Mental Foramen fossa

  • White arrows outline the mental foramen.

  • Black arrows outline apical pathology which is secondary to pulpal exposure from coronal caries

Concepts of normal panoramic anatomy
Concepts of Normal Panoramic Anatomy fossa

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 fossa

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.

Hard Palate fossa

Hyoid Bone

Concept 3
Concept 3 fossa

  • Ghost Images are formed



Concept 31
Concept 3 fossa

Ghost of contra-lateral ramus

Ghost of Hard Palate

Concept 4
Concept 4 fossa

Soft tissue outlines are visualized

Examples: lips, nasolabial fold, dorsum of

tongue, soft palate, ear and ear lobe.

Concept 41
Concept 4 fossa

Dorsum of tongue

Soft Palate

Nasolabial fold

Concept 5
Concept 5 fossa

Air spaces are visualized

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

Posterior Pharyngeal wall fossa

Palatoglossal air space

Nasopharyngeal air space fossa

Glossopharyngeal air space

Concept 51
Concept 5 fossa

Platoglossal Airspace

Maxillary sinuses

Naso-pharyngeal Airspace

Concept 6
Concept 6 fossa

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 fossa

Articular eminence


Glenoid fossa

Sigmoid notch

Cervical vertebrae fossa

Mandibular foramen

Lingual Foramen fossa

Hyoid bone

Concept 7
Concept 7 fossa

Relative Radiolucencies and Radiopacities are seen

  • Machine components

    • Chin Rest

    • Lateral Positioning guides

    • Anterior Positioning guides

Concept 71
Concept 7 fossa

Quiz time
Quiz Time fossa

  • Write answers on a separate sheet of

  • paper

  • Make sure you do write your name and student ID number

Thank you