Reg. No.: …………………
Second Year BDS Degree Supplementary Examinations January 2017
DENTAL MATERIALS
Time: 3 hrs Max marks: 100
• Answer all questions
• Write section A and section B in separate answer books (32 Pages).
Do not mix up questions from section A and section B.
Q P Code: 204002 Section A Prosthodontics Marks: 50
Essay
1. Classify impression materials. Explain in detail about composition and setting reaction
of zinc oxide eugenol impression paste.
Short essays
2. Describe casting defects in detail.
3. Explain hygroscopic setting expansion in detail.
Short notes
4. Stages of polymerization.
5. Disinfection of impression materials.
6. Ductility and malleability.
7. Stainless steel.
8. Epoxy resin.
Q P Code: 205002 Section B Conservative Dentistry Marks: 50
Essay
1. Mention the composition of glass ionomer cements. Explain in detail the setting
reaction of glass ionomer cements and various types of glass ionomer cements.

Short essays
2. Classify inlay waxes. Explain its properties and applications.
3. Classify dental amalgam. Describe in detail the setting reaction of dental amalgam.

Short notes
4. Nitinol
5. Rake angle and clearance angle
6. Smear layer
7. Annealing in direct filling gold
8. Zinc phosphate cement