MDS PREP
Predominant bacteria found in two-days-old plaque
1) Streptococci
2) Bacteroides
3) Spirochetes
4) Actinomyces
Periodontics
Answer: 1
Screen films differ form non-screen films in that
1) They are more sensitive to light than X-rays
2) They are more sensitive to X-rays than light
3) They are usually used in intraoral radiography
4) They do not need intensifying screens
Radiology
Answer: 2
When pulp cannot be extirpated in narrow canals, which of the following can be used
1. Obtundant
2. Astringent
3. Haemostatic
4. Mummifying agent
Endodontics
Answer: 4
Explanation: A mummifying agent, such as paraformaldehyde,
is used to preserve the pulp in cases where extirpation is challenging. This
approach is often used as part of pulp therapy in certain endodontic treatments.
What is the purpose of the calcium content in an electralloy?
1) To improve its malleability
2) To enhance its resistance to corrosion
3) To facilitate bonding with dental tissues
4) To increase its hardness and wear resistance
Electralloy is an alloy of electrolytic gold and calcium, typically with a calcium content of 0.1-0.5%. The addition of calcium creates a dispersion-hardened material that is stronger than pure gold. This property makes it suitable for use in restorations requiring increased hardness and wear resistance, such as inlays and onlays.
Which of the following is absent in CREST syndrome
1) Calcinosis cutis
2) Raynaud"s phenomenon
3) Telagiectasis
4) Endocrine disorders
Oral Pathology
Answer: 4
The main disadvantage during excision of tumour involving soft palate is
1) Damage to glossopharyngeal nerve
2) Result in peritonsillar absence
3) Contraction of scar tissue
4) None of the above
Oral Surgery
Answer: 3
What is the primary concern with using zinc oxide-eugenol cement in large restorations?
1) Low compressive strength
2) Potential for pulpal toxicity
3) High thermal conductivity
4) High solubility
The primary concern is the potential for pulpal toxicity due to the diffusion of eugenol.