MDS PREP
The scientist who discovered that caries was the most common cause of extraction of teeth was
1. Allen
2. Smith
3. Hotz
4. Rush
Radiology
Answer: 1
The scientist who discovered that caries was the most common cause of extraction of teeth was Allen.
Which of the following statements about developing a dental radiograph is false?
1) It involves chemically precipitating metallic silver
2) It it is too long, it results in an over dark radiograph
3) It typically involves a developer containing sodium thiosulphate
4) None of the above
Radiology
Answer: 2
Explanation: This statement is false because if the developing time is too long, it typically results in an overexposed radiograph, which appears too dark. However, if the developing time is too short, it can lead to an underexposed radiograph, which appears too light.
Which of the following help in distinguishing an osseous neoplasm and a cyst on an X-ray
1. Size
2. Shape
3. Location
4. Peripheral bone formation
Radiology
Answer: 4
Which of the following helps in distinguishing an osseous neoplasm and a cyst on an X-ray: peripheral bone formation.
Imaging technique with MAX radiation exposure to patient?
1. chest x-ray
2. MRI
3. CT scan
4. bone scan
Radiology
Answer: 3
Explanation: Among the imaging techniques listed, a CT (computed tomography) scan typically involves the highest radiation exposure to the patient. This is due to the multiple X-ray images taken from different angles to create cross-sectional images of the body.
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.
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.
Occluded submandibular salivary duct can be best observed by
1. Palpation
2. Sialography
3. Occlusal X-ray
4. Thermography
An occluded submandibular salivary duct can be best observed by sialography.
The sialographic appearance of a normal salivary gland is
1. Branching with bloom
2. Branching with leaves
3. Branchless with fruit-laden
4. Branchless with leaves
Radiology
Answer: 1
The sialographic appearance of a normal salivary gland is branching with bloom.