MDS PREP
Aplastic anaemia is common with
1. Chloramphenicol
2. Cephalosporin
3. Tetracycline
4. Pencillin
Oral Pathology
Answer: 1
Aplastic anemia is commonly associated with chloramphenicol.
Attrition is
1. The loss by wear of tooth substance resulting from tooth brushing
2. The loss by wear of tooth substance resulting from mastication and bruxism
3. Both of the above
4. None of the above
Oral Pathology
Answer: 2
Attrition is the loss of tooth substance resulting from mastication and bruxism.
Delayed eruption of at least part of the dentition is a recognized feature of all of the following except
1. Rickets
2. Congenital hyperthyroidism
3. Cleidocranial dysplasia
4. Cherubism
Oral Pathology
Answer: 2
Congenital hyperthyroidism does not typically cause delayed eruption of teeth.
Which of the following is not characteristic of congenital syphilis?
1. Ghon complex
2. Interstitial keratitis
3. Mulberry molars
4. Notched incisors
Oral Pathology
Answer: 1
Ghon complex is associated with primary tuberculosis, not congenital syphilis. The other options (interstitial keratitis, mulberry molars, and notched incisors) are indeed characteristics of congenital syphilis.
The main purpose of intensifying screens in extraoral radiographic films is
1. To increase the contrast of film
2. To increase the exposure time
3. To decrease the speed of film
4. Decrease secondary radiation to patient
Oral Pathology
Answer: 4
The main purpose of intensifying screens is to decrease secondary radiation to the patient.
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.
A patient who has geen given tumoricidal dose of radiotherapy recently reports to dental clinic with painful carious exposed mandibular first molar with periapical abscess. The treatment of choice should be
1. Extraction of the offending tooth
2. Root canal treatment if possible
3. No treatment should be given
4. Incision and drainage of abscess
Oral Pathology
Answer: 2
Root canal treatment is the treatment of choice for a patient with a painful carious exposed mandibular first molar with periapical abscess.
Which of the following is not a form of ionising radiation
1. Alpha-particles
2. Beta-particles
3. X-rays
4. Radiowaves
Oral Pathology
Answer: 4
Radiowaves are not a form of ionizing radiation.