MDS PREP
Symmetrical widening of periodontal ligament space of one or more teeth is the earliest radiological appearance of
1. Osteosarcoma
2. Multiple myeloma
3. Fibrous dysplasia
4. Paget"s disease
Radiology
Answer: 1
Symmetrical widening of the periodontal ligament space of one or more teeth is the earliest radiological appearance of osteosarcoma.
The region which is closest to satisfying all the principles of shadow casting and parallel placement of the film in a paralleling technique full mouth series of periodical radiographs is
1. Maxillary premolar view
2. Mandibular premolar view
3. Maxillary molar view
4. Mandubular molar view
Radiology
Answer: 4
The region closest to satisfying all the principles of shadow casting and parallel placement of the film in a paralleling technique full mouth series of periapical radiographs is mandibular molar view.
The bisecting angle technique is used to take
1. Bitewing radiographs
2. Periapical radiographs
3. True occlusal radiographs of the mandible
4. None of the above
Radiology
Answer: 2
The bisecting angle technique is used to take periapical radiographs.
Zonography is a type of
1. CT scan
2. Radionuclide imaging
3. Panoramography
4. MRT
Radiology
Answer: 3
Zonography is a type of panoramography.
To localize a supernumerary or an impacted tooth and determine its exact relationship to the other teeth, which of the following radiographs would be most effective?
1. A periapical and an occlusal view
2. An occlusal view using a high angle
3. A panoramic radiograph
4. Two or more periapical views at different angles and an occlusal view
Radiology
Answer: 4
To localize a supernumerary or an impacted tooth and determine its exact relationship to the other teeth, the most effective radiographs would be two or more periapical views at different angles and an occlusal view.
Higher kVp is
1. Disadvantageous to film
2. Disadvantageous to patient
3. Advantageous to film
4. All of the above
Radiology
Answer: 1
Higher kVp is disadvantageous to film.
Which of the following has a radiolucency closest to the dentin
1. ZOE
2. Calcium hydroxide
3. Silicophosphate
4. Gutta percha
Radiology
Answer: 3
Which of the following has a radiolucency closest to the dentin: silicophosphate.
Foreshortening of radiographic image results when central X-ray is
1. Parallel to object and film
2. Parallel to object but not to film
3. Perpendicular to film but not to object
4. Perpendicular to object but not to film
Radiology
Answer: 3
Foreshortening of the radiographic image results when the central X-ray is perpendicular to the film but not to the object.