MDS PREP
Grid is used
1. To remove secondary radiation
2. Filter the radiation
3. Removes scattered radiation
4. None of the above
Oral Pathology
Answer: 3
Grids are used to remove scattered radiation from the X-ray beam.
The X-ray collimators commonly used in dentistry include the following except
1. Diaphragm collimator
2. Tubular collimator
3. Rectangular collimator
4. Square collimator
Oral Pathology
Answer: 4
Square collimators are not commonly used in dentistry.
A patient comes with emotional problems, increased salivation, pallor of oral mucosa and a grayish blue discolouration of the gingival. These findings are most consistent with a clinical impression of
1. Cherubism
2. Cretinism
3. Pierre-Robin syndrome
4. Lead poisoning
Oral Pathology
Answer: 4
The findings of emotional problems, increased salivation, pallor, and grayish-blue discoloration of the gingiva are consistent with lead poisoning.
The Maximum penetration among the following is seen with which ray
1. Alpha
2. Beta
3. Gamma
4. Electron beam
Oral Pathology
Answer: 3
Gamma rays have the maximum penetration among the listed types of radiation.
The burtonian line around the gingival is caused by the absorption of
1. Lead
2. Copper
3. Mercury
4. Bismuth
Oral Pathology
Answer: 1
The Burtonian line around the gingival is caused by the absorption of lead.
Disease which increases oral melanin pigmentation
1. Addison"s disease
2. Hyperthyroidism
3. Nephritis
4. All of the above
Oral Pathology
Answer: 1
Diseases that increase oral melanin pigmentation include Addison's disease.
Commonest site for carcinoma of tongue is
1) Lateral margin
2) Tip of tongue
3) Posterior 1/3
4) Ventral surface
Oral Pathology
Answer: 1
The commonest site for carcinoma of the tongue is the lateral margin.
Carcinoma of the tongue is the most frequent oral cancer, and it typically
arises from the squamous cells that cover the surface of the tongue. The lateral
margin of the tongue is the part of the tongue that lies next to the teeth and
the gingivae. This site is often exposed to various carcinogens, such as those
found in tobacco and alcohol, which can increase the risk of developing cancer.
Ramsay Hunt syndrome affects which nerve
1. 5th nerve
2. 7th nerve
3. 9th nerve
4. 10th nerve
Oral Pathology
Answer: 2
Ramsay Hunt syndrome affects the 7th nerve.