Oral Radiology

Question 1

What is the mental ridge ?

Answer 1

seen as two radiopaque lines sweeping bilaterally forward and upward toward the midline ، extend from low in the premolar area on each side up to the midline (incisors roots)

Question 2

What’s is mental fossa ?

Answer 2

depression on the labial aspect of the mandible extending laterally from the midline and above the mental ridge

Question 3

Where is the submandibular gland fossa located ?

Answer 3

On the lingual surface of the mandibular body, immediately below the mylohyoid ridge in the molar area, there is frequently a depression in the bone.

Question 4

What’s is the oblique ridge ?

Answer 4

bony elevation gradually flattens and usually disappears at about where the alveolar process and mandible join below the first molar.

Question 5

What’s is the oblique line ?

Answer 5

The external oblique ridge is a continuation of the anterior border of the mandibular ramus.

Question 6

How is the TMJ Joint form ?

Answer 6

articulation between the glenoid fossa (in squamous )of the temporal bone and the condyle of the mandible

Question 7

PANORAMIC RADIOGRAPH

Answer 7

and X-ray scan the patient from left to right.
The condyles are viewed as well as the sinuses.
the third molars.

Question 8

BITEWINGS radiographs

Answer 8

placed perpendicular to occlusal plane with both mandibular and maxillary teeth in equal areas of exposure

Best in diagnosis of caries
alveolar bone loss in the case of severe periodontitis.

Question 9

Cervical burnout

Answer 9

Radiolucent areas of interproximal teeth with ill-defined borders near the cervical aspect.

Question 10

Cephalometric

Answer 10

x-rays capture a radiographic image of the entire head, usually in profile.

Question 11

epicenter is located coronal to a tooth

Answer 11

odontogenic in origin

Question 12

epicenter is located superior to IAC

Answer 12

greater that it is of odontogenic origin

Question 13

epicenter is located inferior to the IAC

Answer 13

nonodontogenic cell sources

Question 14

epicenter is located within the IAC

Answer 14

neural or vascular in nature

Question 15

condylar head region

Answer 15

cartilaginous sources

Question 16

epicenter is within the maxillary antrum

Answer 16

not odontogenic origin

Question 17

epicenters of central giant cell lesions located in ?

Answer 17

mesial to the first molar teeth in the mandible and mesial to the canine teeth in the maxilla in young patients

Question 18

Osteomyelitis

Answer 18

Common in mandible that maxilla

Question 19

Where is Periapical osseous dysplasia occur ?

Answer 19

periapical regions of teeth

Question 20

punched-out border is ?

Answer 20

has a sharp and very narrow zone of transition;
there is no bone reaction immediately adjacent to the abnormality

Question 21

punched-out border is seen in ?

Answer 21

Multiple myeloma

Question 22

Corticated border seen as ?

Answer 22

thin, uniform, radiopaque line of bone at the periphery of a lesion.

Question 23

Corticated border is common in ?

Answer 23

cysts
benign neoplasms or tumors

Question 24

Sclerotic border seen as ?

Answer 24

wider, more diffuse zone of transition between the lesion and the normal surrounding bone

Question 25

The radiopaque border represents reactive bone in sclerotic border …… ?

Answer 25

usually not uniform in width.

Question 26

Where can we see sclerotic border ?

Answer 26

periapical osseous dysplasia Indicate ability of the lesion to stimulate the production of surrounding bone

Question 27

What is Internal radiolucent “soft tissue” periphery ?

Answer 27

centrally located radiopaque lesion may be surrounded by a radiolucent rim of variable width.

Question 28

Which border describe mixed radiolucent and radiopaque internal structure

Answer 28

Internal radiolucent “soft tissue” periphery

Question 29

radiolucent rim represents …… ?

Answer 29

nonmineralized connective tissue soft tissue capsule.

Question 30

Internal radiolucent “soft tissue” periphery seen in ?

Answer 30

odontomas and cementoblastomas

Question 31

Invasive border ?

Answer 31

few or no trabeculae between the periphery of the lesion and the normal bone.

Question 32

In invasive border on which area we should focus?

Answer 32

focus of this observation is on the enlarging radiolucency at the expense of normal adjacent bone trabeculae

Question 33

Invasive borders are indicate?

Answer 33

rapid growth malignant lesions.

Question 34

Bitewing Radiography Used to ?

Answer 34

• Detect early interproximal caries • Detect secondary caries below restorations • Assess loss of the interdental and furcation bone

Question 35

Which structures can we see on bitewing X-ray ?

Answer 35

crowns of the maxillary and mandibular teeth and the alveolar crest on the same receptor

Question 36

Which structure we see in occlusal technique ?

Answer 36

palate or floor of the mouth reasonable extent of the contiguous lateral structures.

Question 37

For which patient we can perform occlusal X-ray ?

Answer 37

patients are unable to open wide enough for periapical images