MDS PREP
The deficiency of which of the following vitamins does not affect tooth development
1. Vit A
2. Vit D
3. Vit C
4. Vit K
Oral Pathology
Answer: 4
Vitamin K deficiency does not affect tooth development.
Most radioresistant cells are
1. Lymphocytes
2. Granulocytes
3. Muscle cells
4. Connective tissue cells
Oral Pathology
Answer: 3
Muscle cells are the most radioresistant cells.
The substance most commonly used for protection against X-ray radiations is
1. Zinc
2. Steel
3. Lead
4. Porcelain
Oral Pathology
Answer: 3
Lead is the most commonly used substance for protection against X-ray radiation.
Cafe-au-lait spots are seen in
1. Paget"s disease of bone
2. Cherubism
3. Von Recklinghausen disease
4. Von Willebrand disease
Oral Pathology
Answer: 3
Cafe-au-lait spots are seen in Von Recklinghausen disease.
Which of the following is least affected in vit C deficiency
1. Gingival fibres
2. Periodontal ligament
3. Blood vessels of the gingival
4. Epithelial lining of the mucosa
Oral Pathology
Answer: 4
The epithelial lining of the mucosa is least affected in Vitamin C deficiency.
Mitotic delay is longer with
1. Smaller dose
2. Moderate dose
3. Large dose
4. A and B
Oral Pathology
Answer: 3
Mitotic delay is longer with a large dose of radiation.
The common feature of cherubusm, hyperparathyroidism and aneurysmal bone cyst is
1. All affect soft tissues only
2. All contain multinucleated giant cells histologically
3. All are of pituitary origin
4. All require aggressive therapy
Oral Pathology
Answer: 2
All these conditions contain multinucleated giant cells histologically.
Speed at which electron travel in gas tube once released from cathode filament is dependent on
1. Potential difference between electrodes
2. Angle between filament and anoxic target
3. Amount of kilovoltage applied to the circuit
4. Intensity of current applied to target
Oral Pathology
Answer: 1
The speed at which electrons travel in a gas tube is primarily dependent on the potential difference between electrodes.