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Second Year BDS Degree Examinations - September 2013
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Time: 3 hrs
DENTAL MATERIALS
Max marks: 100
- Answer all questions
- Write section A and section B in separate answer books. Do not mix up questions from section A and section B.
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QP Code: 204002 Section A – Prosthodontics
Marks: 50
Essay (14)
- Define an impression. Discuss the uses, composition and setting reaction of elastomeric impression materials. (2+2+5+5=14)
Short essays (2x8=16)
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- Classify dental casting investments. Explain in detail about gypsum bonded investment. (3+5=8)
- Classify base metal alloys. Mention about stainless steel, cobalt chromium nickel and beta titanium alloys. (2+6=8)
Short notes (5x4=20)
- Crystalline and non crystalline structures.
- Irreversible hydrocolloid
- Maxillofacial prosthetic materials.
- Fluxes and anti fluxes
- Stress and strain
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QP Code: 205002 Section - Conservative Dentistry
Marks: 50
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Essay (14)
- Classify direct filling gold. Discuss the techniques for removal of surface impurities. Add a note on compaction of direct filling gold (4+5+5=14)
Short essays (2x8=16)
- Discuss mercury toxicity and mercury hygiene (3+5=8)
- Define and classify dentine bonding agents (4+4=8)
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Short notes (5x4=20)
- Tarnish and corrosion
- Sandwich technique
- Shape memory and super elasticity
- Modified zinc oxide eugenol cement
- Indirect composite inlays
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