MDS PREP
A consistant radiographic feature in Page"s disease is
1. Hypercementosis of tooth
2. Widened periodontal ligament
3. Loss of normal trabecular pattern of bone
4. Root resorption
Radiology
Answer: 1
A consistent radiographic feature in Paget's disease is hypercementosis of tooth.
Lateral cephalogram is used for all of the following except
1. To assess where excessive growth is occuring
2. To compare the growth patterns with previous radiograph
3. To assess level of posterior alveolar bone
4. To assess soft tissue profile
Radiology
Answer: 3
A lateral cephalogram is used to assess the level of posterior alveolar bone.
Overexposure of film results in
1. Increased density and dark film
2. Increased density and light film
3. Decreased density and light film
4. Decreased density and dark film
Radiology
Answer: 1
Overexposure of film results in increased density and dark film.
Primary source of X-ray photons from an X-ray tube is
1. Stray radiation
2. Bremhaulstrong radiation
3. Characteristic radiation
4. All of the above
Radiology
Answer: 2
The primary source of X-ray photons from an X-ray tube is characteristic radiation.
Ankylosis of TMJ can be best viewed in
1. Lateral oblique view
2. Lateral view
3. Transcranial
4. PA view
Radiology
Answer: 3
Ankylosis of TMJ can be best viewed in transcranial view.
Submentovertex view is best useful for
1. Sinuses
2. Zygomatic fractures
3. Mandibular fractures
4. Maxillary fractures
Radiology
Answer: 3
Submentovertex view is best useful for mandibular fractures.
In panaromic radiograph, smiling appearance of structures occurs if patient chin is
1. Placed anterior to focal trough
2. Placed posterior to focal length
3. Tilted downward
4. Tilted upwards
Radiology
Answer: 3
In a panoramic radiograph, a smiling appearance of structures occurs if the patient's chin is tilted downward.
Reflecting layer used in intensifying screens
1. Calcium tungstate
2. Titanium oxide & magnesium carbonate
3. Gaddinium oxysulphide
4. Lanthanum oxybromide
Radiology
Answer: 2
The reflecting layer used in intensifying screens is titanium oxide & magnesium carbonate.