MDS PREP
Distortion of image is more in
1) Parallel (or) long cone technique
2) Bisecting angle (or) short cone technique
3) Same in both of the above
4) No distoration in either of them
Radiology
Answer: 2
The X-ray collimators commonly used in dentistry include the following except
1) Diaphragm collimator
2) Tubular collimator
3) Rectangular collimator
4) Square collimator
Radiology
Answer: 4
Medially displaced condylar neck fracture is best visulised in
1) PA view
2) Lateral oblique view
3) Occipitomental view
4) Submentovertex
Radiology
Answer: 1
Internal resorption may be seen on the radiograph as
1. Interproximal bone loss
2. Small radiolucent enlargement of the pulp chamber
3. Radiopacity in pulp chamber
4. Small area around the root apex
Radiology
Answer: 2
Identify the wrong statement regarding salivary scan
1) Specifity is less than sialograms
2) Salivary scan is functional whereas sialagram is anatomical
3) When both are indicated scan is done first
4) When both are indicated sialogram is done first
Radiology
Answer: 4
The presence of pulp stones on the radiograph of a tooth indicates the presence of
1. Acute pulpitis
2. Acute pulpalgia
3. Chronic periodontitis
4. None of the above
Radiology
Answer: 4
A patient who has geen given tumoricidal dose of radiotherapy recently reports to dental clinic with painful carious exposed mandibular first molar with periapical abscess. The treatment of choice should be
1) Extraction of the offending tooth
2) Root canal treatment if possible
3) No treatment should be given
4) Incision and drainage of abscess
Radiology
Answer: 2
Which of the following statements is false
1. "Unsafe" dark room lights cause fogging of films
2. Alveolar resorption is easily recognized on X-ray
3. Decreasing focal skin distance increases radiation safety factor
4. None of the above