MDS PREP
Unit of measurements to compare radiation damage
1. Exposure
2. Dose
3. Effective dose
4. Dose equivalent
Oral Pathology
Answer: 4
The unit of measurement to compare radiation damage is dose equivalent.
Green stains which occur frequently in children are due to
1. Enamel deficiency
2. Dentin deficiency
3. Material alba
4. Chromogenic bacteria
Oral Pathology
Answer: 4
Green stains in children are often due to chromogenic bacteria.
Trigeminal neuralgia
1. Does not disturb the patient during sleep
2. Can be treated with NSAIDs
3. Always bilateral in distribution
4. Is a hereditary condition
Oral Pathology
Answer: 1
Trigeminal neuralgia does not disturb the patient during sleep.
Commonly used collimating device
1. Aluminium filter
2. Lead diaphragm
3. Molybdenum cup
4. Tungsten filament
Oral Pathology
Answer: 2
Lead diaphragms are commonly used collimating devices.
Acrodermatitis enteropathica is due to deficiency of
1. Mercury
2. Zinc
3. Lead
4. Bismuth
Oral Pathology
Answer: 2
Acrodermatitis enteropathica is due to a deficiency of zinc.
Bell"s palsy is triggered by
1. Exposure to cold
2. Tooth extraction
3. Local and systemic infection
4. Any of the above
Oral Pathology
Answer: 4
Bell's palsy can be triggered by exposure to cold, tooth extraction, or infections.
Mean exposure at skin from an intraoral periapical radiographs
1. 300 mR
2. 0.03 mR
3. 47 mR
4. Both A and B
Oral Pathology
Answer: 4
Mean exposure at the skin from intraoral periapical radiographs is 0.03 mR.
Badges should be worn by dental technician every
1. 1 month
2. 3 months
3. 6 months
4. 4 months
Oral Pathology
Answer: 1
Badges should be worn by dental technicians every 3 months to monitor radiation exposure.