OPG interpretation

1. Panoramic radiography

2. 1952, Paatero 1960 2002
Development of Panoramic radiogaphy

3. Tomographic layer

4. OP layer

5. Projection of OP

6. Anatomical landmarks

7. Ext.
Auditory
meatus
Mandibular
condyle
Articular eminence
Coronoid
process
Zygomatic
bone
Ptregomaxillary Fissure
Inf. orbital rim
Floor of Maxillary sinus
Ant. wall of Maxillary sinus
Hard palate
Nasal fossa
Inf. Orbital canal and foramen
Zyg.
process
of
Maxilla
Panoramic Innominate line
(Infra temporal surface of
Zyg. bone
Lat.
ptreg.
plate
Man. fossa
Inf. border of Mandible
C- Spine
Mental foramen
Hyoid bone
Inf. Alveolar canal
Ext. oblique ridge
All this diagnostic information is missed in intraoral X-rays
Hard Tissue

8. Soft tissues on OP

9. Inf. nasal concha (turbinate)
Inf. nasal meatus
Dorsal surface of the tongue
Post. Wall of the pharynx
Soft palate
Lower lip
Upper
lip
Middle meatus
Ghost image of opposite Man.
Soft tissue (edentulous)
All this diagnostic information is missed in intraoral X-rays

10. Ghost image

11. Ghost image

12. Ghost image

13. Elnöki tumor

14. Presidental tumor

15. Presidental tumor

16. Presidental tumor

17. Carotis plaque

18. Carotis plaque

19. Resorption on the cortical bone
Nakamoto et al. Osteoporos Int (2003) 14: 659–664
Specificity: 40%
Senzitivity: 77%
(comparing with BMD)

20. Osteoporotic patient

21. Normal panoramic