NORMAL ANATOMICAL RADIOGRAPHIC LANDMARKS Mohammed Malik Afroz
NORMAL RADIOGRAPHIC ANATOMY – { INTRAORAL PERIAPICAL FILMS}
RADIOLUCENT RADIO OPAQUE MAXILLA RADIOLUCENT RADIO OPAQUE INTERMAXILLARY SUTURE NASAL FOSSA INCISIVE FORAMEN LATERAL FOSSA NOSE NASOLACRIMAL CANAL ANTERIOR NASAL SPINE NASAL SEPTUM FLOOR OF NASAL FOSSA NASOLABIAL FOLD MAXILLARY SINUS ZYGOMATIC PROCESS MAXILLARY TUBEROSITY HAMULAR NOTCH
Radiolucent Land Marks of Maxilla
Intermaxillary suture THIN RADIOLUCENT LINE MIDLINE
Nasal Fossa Well defined radiolucency Either side of nasal septum
Incisive foramen OVOID RADIOLUCENCY WELL DEFINED BETWEEN ROOTS OF CENTRALS
Lateral fossa Depression – canine lateral Diffuse radiolucency
Nasolacrimal canal Connects nasal cavity to lacrimal gland
OCCLUSAL VIEW IOPA
Radiopaque Landmarks of Maxilla
Anterior nasal spine V SHAPED RADIO-OPACITY 1.5 –2 CM ABOVE CREST
Nasal septum THICK RADIO OPAQUE LINE ABOVE APICES OF CENTRALS
Floor of nasal fossa THIN RADIO OPAQUE LINE EITHER SIDE –NASAL SEPTUM
Nose Soft tissue shadow
Nasolabial fold CANINE - PREMOLAR AREA OBLIQUE SOFT TISSUE SHADOW
Maxillary sinus AIR FILLED CAVITY
SEPTA INVERTED Y OF ENNIS DIPPING OF SINUS
Zygomatic process
Maxillary tuberosity Radio opaque bulge Distal to 3 rd molar
Hamular notch Hook like projection Extends from medial pterygoid plate
MANDIBLE
RADIOLUCENT RADIO OPAQUE SYMPHYSIS MENTAL FOSSA SUBMANDIBULAR GLAND FOSSA MENTAL FORAMEN MANDIBULAR CANAL NUTRIENT CANALS GENIAL TUBERCLES MENTAL RIDGE MYLOHYOID RIDGE EXTERNAL OBLIQUE RIDGE INFERIOR BORDER CORONOID PROCESS
Radiolucent Landmarks of Mandible
Symphysis Seen in Infants Radio lucent line MIDLINE Importance in adults: Cleft /fracture Oral radiology-Principles and Interpretation (White &Pharoah 5th edition)
Mental fossa Scooped out depression Anterior mandible Oral radiology-Principles and Interpretation (White &Pharoah 5th edition)
Submandibular gland fossa DIFFUSE RADIOLUCENCY MOLAR AREA CAVITY ACCOMODATES SG Þ “FUNDAMENTALS OF ORAL MEDICINE AND RADIOLOGY”- (Bailoor DN –Nagesh K S) 3 rd EDITION
Mental foramen OVOID RADIOLUCENCY PREMOLAR AREA Oral radiology-Principles and Interpretation (White &Pharoah 5th edition)
Þ “FUNDAMENTALS OF ORAL MEDICINE AND RADIOLOGY”- Mandibular canal Linear radiolucent shadow Mental foramen to mand foramen Radio opaque superior /inferior borders Þ “FUNDAMENTALS OF ORAL MEDICINE AND RADIOLOGY”- (Bailoor DN –Nagesh K S) 3 rd EDITION
Nutrient canals RUNS VERTICALLY UPWARDS (White &Pharoah 5th edition) Oral radiology-Principles and Interpretation (White &Pharoah 5th edition)
Radiopaque Landmarks of Mandible
Genial tubercles Lingual surface Spine shaped projection Attachment of muscles Oral radiology-Principles and Interpretation (White &Pharoah 5th edition)
OCCLUSAL/IOPA VIEWS Lingual foramen
Mental ridge Extends from premolar (White &Pharoah 5th edition) Oral radiology-Principles and Interpretation (White &Pharoah 5th edition)
2 Radio opaque lines IOPA of mand centrals (Bilateral)
Mylohyoid ridge LEVEL OF MOLAR APICES ABOVE THE MAND CANAL
External oblique ridge RADIO OPAQUE LINE MANDIBULAR 3rD MOLAR REGION NEAR ALVEOLAR CREST Oral radiology-Principles and Interpretation (White &Pharoah 5th edition)
Inferior border of mandible DENSE RADIO OPAQUE BAND OCCASIONALLY SEEN Oral radiology-Principles and Interpretation (White &Pharoah 5th edition)
Coronoid process Downward /forward Periapical view of max 3rd molar Movement of coronoid During opening Oral radiology-Principles and Interpretation (White &Pharoah 5th edition)
Importance : Differentiate from pathology NASOPALATINE DUCT CYST
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