Lecture 3 Radiographic anatomy part 1 Flashcards by Cosmo Liu

Q

What is the labelled arrow?

A

Root canal

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Q

Labelled arrow?

A

Root canal

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Q

Are these root canals visible in the last 2 mm?

Is the cementum discernible?

A

Frequently not visible in the last 2 mm.

Cementum is not discernible since it has same density of dentine.

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Q

What is this?

A

Cervical burnout.

Overexposure of lateral portion of roots between enamel and alveolar crest.

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Q

What is this?

A

Cervical burnout

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Q

Labelled arrow?

A

Lamina dura

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Q

Name the labelled arrows

A

Lamina dura

Visualization depends on the orientation of the beam and shape of tooth/root

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Q

Name this supporting structure

A

Alveolar crest

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Q

Name this supporting structure

A

Alveolar crest

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Q

Name this supporting structure

A

Periodontal ligament space

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Q

Name this supporting structure

A

Periodontal ligament space

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Q

Name this supporting structure

A

Periodontal ligament space - may appear double depending on the anatomy of the root

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Q

Describe what’s happening here

A

Periodontal ligament space may appear double depending on the anatomy of the root.

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Q

Name this supporting structure

A

Trabecular or cancellous bone

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Q

Name this supporting structure

A

Cancellous bone - small trabecular (marrow) space as pointed by arrow.

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Q

Name this supporting structure

A

Cancellous bone - aroow is pointing to large trabecular (marrow) spaces

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Q

Name the arrow pointed structure

A

Intermaxillary suture - also called the median suture

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Q

Name this structure pointed by arrows

A

Intermaxillary suture - also called the median suture

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Q

Name the arrow pointed structure and describe

A

Anterior nasal spine - opaque, irregular and V-shaped

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Q

Name this structure pointed by arrows

A

Anterior floor of the nasal cavity

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Q

Name the arrow pointed structure

A

Anterior floro of the nasal cavity

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Q

Name the labelled black arrow structure and when is it frequently seen?

A

Nasal septum - frequently seen covered by mucosa (white arrow)

Q

Name the white arrow structure

A

Inferior concha - also called inferior turbinate

Q

Name the white arrow labelled structure

A

Incisive canal - also called nasopalatine foramen

Name the white arrow-labelled structure

Incisive foramen - also called nasopalatine foramen

Name this arrow labelled structure

Superior foramina of the nasopalatine canal

Name the arrow labelled structure

Superior foramina of the nasopalatine canal

Name this structure

Superior foramina of the nasopalatine canal

Name this structure

Superior foramina of the nasopalatine canal

Name this structure

Lateral fossa - also called incisive fossa

Name this structure

Nose - soft tissue outline of the columella and lobule

Name this structure

Nose - soft tissue outline of the columella and lobule

Name this structure labelled by white arrows

Nasolabial fold

Name this structure

Nasolabial fold

Name the white labelled arrow structure

Floor of the maxillary sinus

Name the black and white arrow labelled structures

Maxillary sinus - inverted "Y" of Ennis

Name the white labelled structure

Maxillary sinus

Name the white arrow labelled structure

Maxillary sinus

Name the white labelled structure

Maxillary sinus septum

Name the white labelled structure

Neurovascular canal near maxillary sinus septum

Name the white labelled structure

Maxillary sinus septum and neurovascular canal

Name the white arrow labelled structure

zygomatic buttress/ zygomatic process of the maxilla

Name the black arrow labelled structure

Zygomatic process of the maxilla

Name the white arrow structure

Zygomatic arch - inferior border

Name the white arrow structure

Pterygoid plates and maxillary tuberosity

Name the white arrow labelled structure

Pterygoid plates and maxillary tuberosity

Name the white labelled arrow structure

Hamular process of the medial pterygoid plate

Name the white arrow labelled structure

Hamular process of the medial pterygoid plate

Name the white arrow labelled structure

Hard palate

Name this structure

Hard palate

Name the red arrow structure

soft tissue of the gingival margin

Name the red labelled arrow

Soft tissue of the gingival margin

Describe the decreasing order of density (relative densities of oral cavity structures)

- Metal - New Composite restorations - Enamel - Dentine - Lamina Dura (LD) dense white line around socket - Bone trabeculae and bone borders - Muscle - Fat - Soft tissue of teeth: pulp, periodontal ligament space (PLS) - Air