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

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