MDS PREP
An intraoral periapical X-ray is taken for evaluation of impacted third molar. Another X-ray is taken with downward angulation to first one. If third molar is lingual impaction it will appear to
1. Move downward in relation to inferior alveolar canal
2. Move upward in relation to inferior alveolar canal
3. Be stable in relation to inferior alveolar canal
4. None of the above
Radiology
Answer: 1
If a third molar is lingually impacted, it will appear to move downward in relation to the inferior alveolar canal when taking a second X-ray with downward angulation.
Zygoma fractures can be best viewed by
1. Occipitomental view
2. Lateral oblique
3. Towne"s view
4. True lateral
Radiology
Answer: 1
Zygoma fractures can be best viewed by occipitomental view.
Salt and pepper appearance in MRI of salivary gland is suggestive of
1. Sjogren syndrome
2. Thalassaemia
3. Mumps
4. Salivary gland tumour
Radiology
Answer: 1
Salt and pepper appearance in MRI of the salivary gland is suggestive of Sjogren syndrome.
If multiple myeloma is suspected in a patient"s history and intraoral radiograph, which of the following radiographs should be taken to confirm the diagnosis
1. Lateral skull
2. Anterior-posterior view
3. Lateral oblique
4. Posterior-anterior view
If multiple myeloma is suspected, a lateral skull radiograph should be taken to confirm the diagnosis.
Internal derangement of the TMJ can be best diagnosed by
1. MRI
2. CT scan
3. Arthrography
4. Panoramic view
Radiology
Answer: 1
Internal derangement of the TMJ can be best diagnosed by MRI.
Dead bone appears on a radiograph as
1. Radiolucent
2. Radiopaque
3. Cotton wool appearance
4. Salt and pepper appearance
Radiology
Answer: 2
Dead bone appears on a radiograph as radiopaque.
Intensifying screen is used in extraoral radiograph to
1. Decrease patient radiation
2. Increase contrast
3. Decrease contrast
4. Collimation
Radiology
Answer: 1
Intensifying screen is used in extraoral radiographs to decrease patient radiation.
The TMJ view that is used to view fractures of neck of condyle is
1. Trancranial
2. Infracranial
3. Both the above
4. None of the above
The TMJ view that is used to view fractures of the neck of the condyle is infracranial.