Rajiv Gandhi University of Health Sciences 2007 B.D.S Dental Surgery –(DENTAL MATERIALS (RS & RS2))(QP Code: 1154) - Question Paper

I B.D.S Degree exam – August 2007

DENTAL MATERIALS (RS & RS2)
QP Code: 1154
Time: three Hrs. [Max. Marks : 100]

Your answers should be specific to the ques. asked.
Draw neat tagged diagrams wherever necessary.

LONG ESSAY two X 10 = 20 Marks
1. define composition and classification of composite restorative materials.
2. Classify dental impression materials. Write in detail about reversible hydrocolloid.

SHORT ESSAY 10 X five = 50 Marks
3. Die materials
4. Zinc-free alloys
5. Solidification defects in casting
6. Gypsum bonded investment
7. Manipulation of zinc phosphate cement
8. Resin replaced glass ionomers
9. Manufacturing of spherical silver alloy powder
10. Welding
11. Composition of ceramics
12. Base plate wax.

SHORT ANSWERS 10 X three = 30 Marks
13. Hygroscopic expansion
14. Denture cleansers
15. Eutectic alloys
16. Suck back porosity
17. Activator – initiators in light cured composites
18. Sandwicth technique
19. Stress and strain
20. Adhesion
21. Accelerators in Zinc Oxide eugenol impression paste
22. Cement base

Earning:   Approval pending.