This document describes normal anatomical radiographic landmarks that are seen on intraoral periapical films of the maxilla and mandible. It lists and provides brief descriptions of radiolucent and radiopaque landmarks seen in the midline, nasal fossa, maxillary sinus, mandibular canal, mental foramen and other areas. Examples include the intermaxillary suture, nasal septum, maxillary tuberosity, mylohyoid ridge, and coronoid process. The document emphasizes the importance of recognizing these normal anatomical structures to differentiate them from potential pathologies.

1. NORMAL ANATOMICAL
RADIOGRAPHIC LANDMARKS
Mohammed Malik Afroz

2. NORMAL RADIOGRAPHIC ANATOMY –
{ INTRAORAL PERIAPICAL FILMS}

3. RADIOLUCENT RADIO OPAQUE
1. INTERMAXILLARY
SUTURE
2. NASAL FOSSA
3. INCISIVE FORAMEN
4. LATERAL FOSSA
5. NOSE
6. NASOLACRIMAL
CANAL
1. ANTERIOR NASAL SPINE
2. NASAL SEPTUM
3. FLOOR OF NASAL FOSSA
4. NASOLABIAL FOLD
5. MAXILLARY SINUS
6. ZYGOMATIC PROCESS
7. MAXILLARY TUBEROSITY
8. HAMULAR NOTCH
MAXILLA

4. Radiolucent Land Marks of Maxilla

5. THIN RADIOLUCENT LINE
MIDLINE

6. Well defined radiolucency
Either side of nasal septum

7. OVOID RADIOLUCENCY
WELL DEFINED
BETWEEN ROOTS OF CENTRALS

8. Depression – canine lateral
Diffuse radiolucency

9. Connects nasal cavity to lacrimal gland

10. IOPA
OCCLUSAL VIEW

11. Radiopaque Landmarks of Maxilla

12. RADIO-OPACITY
V SHAPED
1.5 –2 CM ABOVE CREST

13. THICK RADIO OPAQUE LINE
ABOVE APICES OF CENTRALS

14. THIN RADIO OPAQUE LINE
EITHER SIDE –NASAL SEPTUM

15. Soft tissue shadow

16. CANINE - PREMOLAR AREA
OBLIQUE SOFT TISSUE SHADOW

17. AIR FILLED CAVITY

18. INVERTED Y OF ENNIS
SEPTA
DIPPING OF SINUS

20. Radio opaque bulge
Distal to 3 rd molar

21. Hook like projection Extends from medial pterygoid plate

23. RADIOLUCENT RADIO OPAQUE
1. SYMPHYSIS
2. MENTAL FOSSA
3. SUBMANDIBULAR
GLAND FOSSA
4. MENTAL FORAMEN
5. MANDIBULAR CANAL
6. NUTRIENT CANALS
1. GENIAL TUBERCLES
2. MENTAL RIDGE
3. MYLOHYOID RIDGE
4. EXTERNAL OBLIQUE
RIDGE
5. INFERIOR BORDER
6. CORONOID PROCESS

24. Radiolucent Landmarks of
Mandible

25. Seen in Infants
Radio lucent line
MIDLINE
Importance in adults: Cleft /fracture
Oral radiology-Principles and Interpretation
(White &Pharoah 5th edition)

26. Scooped out depression
Anterior mandible
Oral radiology-Principles and Interpretation
(White &Pharoah 5th edition)

27. MOLAR AREA
DIFFUSE
RADIOLUCENCY
ACCOMODATES SG
CAVITY
 “FUNDAMENTALS OF ORAL MEDICINE AND RADIOLOGY”-
(Bailoor DN –Nagesh K S) 3 rd EDITION

28. PREMOLAR AREA OVOID RADIOLUCENCY
Oral radiology-Principles and Interpretation
(White &Pharoah 5th edition)

29. Linear radiolucent shadow
Mental foramen to mand foramen
Radio opaque superior
/inferior borders
 “FUNDAMENTALS OF ORAL MEDICINE AND RADIOLOGY”-
(Bailoor DN –Nagesh K S) 3 rd EDITION

30. RUNS VERTICALLY UPWARDS
Oral radiology-Principles and Interpretation
(White &Pharoah 5th edition)

31. Radiopaque Landmarks of
Mandible

32. Lingual surface
Spine shaped projection
Attachment of muscles
Oral radiology-Principles and Interpretation
(White &Pharoah 5th edition)

33. OCCLUSAL/IOPA VIEWS
Lingual foramen

34. Extends from premolar
Oral radiology-Principles and Interpretation
(White &Pharoah 5th edition)

35. 2 Radio opaque lines
(Bilateral)
IOPA of mand centrals

36. LEVEL OF MOLAR APICES ABOVE THE MAND CANAL

37. RADIO OPAQUE LINE
MANDIBULAR 3rD MOLAR
REGION
NEAR ALVEOLAR CREST
Oral radiology-Principles and Interpretation
(White &Pharoah 5th edition)

38. DENSE RADIO OPAQUE BAND
OCCASIONALLY SEEN Oral radiology-Principles and Interpretation
(White &Pharoah 5th edition)

39. Periapical view of max 3rd molar
Downward /forward
Movement of coronoid
During opening
Oral radiology-Principles and Interpretation
(White &Pharoah 5th edition)

40. Importance :
Differentiate from pathology
NASOPALATINE DUCT CYST

41. THANK YOU
Any Questions ?????