MDS PREP
Primary source of X-ray photons from an X-ray tube is
1. Stray radiation
2. Bremhaulstrong radiation
3. Characteristic radiation
4. All of the above
Radiology
Answer: 2
The primary source of X-ray photons from an X-ray tube is characteristic radiation.
Arterial obstruction may cause all except
1) Ulceration
2) Gangrene
3) Local rise of temperature
4) Colour changes
Oral medicine
Answer: 3
The following are all defensive mechanisms of pulp except
1) Formation of sclerotic dentin
2) Formation of interglobular dentin
3) Formation of reparative and secondary dentin
4) Formation of the tertiary dentin
Conservative Dentistry
Answer: 2
Diabetes insipidus, exophthalmous and radiolucent bone defects within the skull are most suggestive of which of the following conditions
1) Sickle cell anaemia
2) Niemann-pick disease
3) Letterer-Siwe disease
4) Hand-Schuller-Christian disease
Oral Pathology
Answer: 4
Predominant connective tissue cells of periodontal ligament
1) Fibroblasts
2) Epithelial rests of Malassez
3) Osteoclasts
4) Osteoblasts
Periodontics
Answer: 1
Which organ is the MOST susceptible to infarction due to systemic arterial thromboembolism?
1. Brain
2. Heart
3. Liver
4. Colon
Pathology
Answer: 1
The following is more detrimental to the tooth structure during cavity preparation
1) Axial depth
2) Pulpal depth
3) Faciolingual width
4) Mesiodistal width
Conservative Dentistry
Answer: 3
In dislocation of the jaw, displacement of the articular disc beyond the TM joint results from spasm of excessive contraction of the following muscle
1. Buccinator
2. Lateral pterygoid
3. Masseter
4. Temporalis
Latreal Pterygoid is inserted on Mandible