NORMAL ANATOMICAL RADIOGRAPHIC LANDMARKS
Mohammed Malik Afroz
NORMAL RADIOGRAPHIC ANATOMY – { INTRAORAL PERIAPICALPERIAPICAL FILMS}
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
Radiolucent Land Marks of Maxilla
THIN RADIOLUCENT LINE
MIDLINE
Well defined radiolucency
Either side of nasal septum
OVOID RADIOLUCENCY
WELL DEFINED
BETWEEN ROOTS OF CENTRALS
Depression – canine lateral
Diffuse radiolucency
Connects nasal cavity to lacrimal gland
IOPAOCCLUSAL VIEW
Radiopaque Landmarks of Maxilla
RADIO-OPACITYV SHAPED
1.5 –2 CM ABOVE CREST
THICK RADIO OPAQUE LINE
ABOVE APICES OF CENTRALS
THIN RADIO OPAQUE LINE
EITHER SIDE –NASAL SEPTUM
Soft tissue shadow
CANINE - PREMOLAR AREA
OBLIQUE SOFT TISSUE SHADOW
AIR FILLED CAVITY
INVERTED Y OF ENNIS
SEPTA
DIPPING OF SINUS
Radio opaque bulge
Distal to 3 rd molar
Hook like projection Extends from medial pterygoid plate
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
Radiolucent Landmarks of Mandible
Seen in Infants
Radio lucent line
MIDLINE
Importance in adults: Cleft /fracture
Oral radiology-Principles and Interpretation (White &Pharoah 5th edition)
Scooped out depression
Anterior mandible Oral radiology-Principles and Interpretation (White &Pharoah 5th edition)
MOLAR AREA
DIFFUSE RADIOLUCENCY
ACCOMODATES SG CAVITY “FUNDAMENTALS OF ORAL MEDICINE AND RADIOLOGY”-
(Bailoor DN –Nagesh K S) 3 rd EDITION
PREMOLAR AREA OVOID RADIOLUCENCY
Oral radiology-Principles and Interpretation (White &Pharoah 5th edition)
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
RUNS VERTICALLY UPWARDS Oral radiology-Principles and Interpretation (White &Pharoah 5th edition)
Radiopaque Landmarks of Mandible
Lingual surface
Spine shaped projection
Attachment of muscles
Oral radiology-Principles and Interpretation (White &Pharoah 5th edition)
OCCLUSAL/IOPA VIEWS
Lingual foramen
Extends from premolar
Oral radiology-Principles and Interpretation (White &Pharoah 5th edition)
2 Radio opaque lines
(Bilateral)
IOPA of mand centrals
LEVEL OF MOLAR APICES ABOVE THE MAND CANAL
RADIO OPAQUE LINE
MANDIBULAR 3rD MOLAR REGION
NEAR ALVEOLAR CREST
Oral radiology-Principles and Interpretation (White &Pharoah 5th edition)
DENSE RADIO OPAQUE BAND
OCCASIONALLY SEEN Oral radiology-Principles and Interpretation (White &Pharoah 5th edition)
Periapical view of max 3rd molarDownward /forward
Movement of coronoidDuring opening Oral radiology-Principles and Interpretation
(White &Pharoah 5th edition)
Importance :
Differentiate from pathology
NASOPALATINE DUCT CYST
THANK YOU
Any Questions ?????