MDS PREP
Green film after processing is due to
1. Film placed in fixer solution first
2. High temperature difference of solution
3. Film emulsion not in contact with processing solution
4. Presence of rare earth elements in film
Green film after processing is due to the film emulsion not being in contact with the processing solution.
According to Clark"s rule for localisation of object if tube is shifted mesially to original angulation
1. Buccal objects move mesially
2. Lingual object moves mesially
3. Both buccal and lingual object move distally
4. Both buccal and lingual object move mesially
Radiology
Answer: 2
According to Clark's rule for localization of an object, if the tube is shifted mesially to the original angulation, the lingual object moves mesially.
Radiographic finding of generalised widening of periodontal ligament with "button hole" mouth is found in
1. Osteosarcoma
2. Scleroderma
3. Apical scar
4. Solar elastosis
Radiology
Answer: 2
Radiographic finding of generalized widening of the periodontal ligament with "button hole" mouth is found in scleroderma.
Mottling is seen due to
1. Fast film
2. Low speed film
3. Motion
4. Scattered radiation
Radiology
Answer: 4
Mottling is seen due to scattered radiation.
When evaluating intraoral periapical films which structures have improved sharpness
1. Lingual structures
2. Buccal structures
3. Interproximal structures
4. All of them equally
Radiology
Answer: 1
When evaluating intraoral periapical films, lingual structures have improved sharpness.
Fogging on the radiographs is the result of
1. Increase in humidity
2. Scattered radiation
3. Overdevelopment
4. All of the above
Radiology
Answer: 4
Fogging on the radiographs is the result of all of the above: increase in humidity, scattered radiation, overdevelopment.
A thin radiolucent line which follows the root outline on X-rays is
1. Lamina dura
2. Periodontal ligment
3. Nutrient canal
4. Pulp
A thin radiolucent line which follows the root outline on X-rays is the periodontal ligament.
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.