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INTRODUCTION TO DENTAL MATERIALS
Short Question
1.ADA specifications.
Mechanical Properties
Short Answer Questions
1. Mechanical bonding.
2. Stress and Strain curve.
3. Stress and Strain relation.
7. Hardness test.
8. Thermal expansion .Add a note on coefficient of thermal expansion9. Galvanism
10. Fusion temperature.
11. Rheological properties.
12. Dimension of color.
13. Adhesion and bonding.
2M Questions
1. Stress and Strain relation.
2. Define stress and strain.
10.Ductility and malleability.
12.Brittleness.
13.Toughness.
14.Brinnel's hardness test.
15.Thermal expansion. Add a note on coefficient of thermal expansion.
16.creep and flow.
17. Microleakage.
18. hue,value,chroma.
19. color parameter.
Biocompatibility
Short Answer Questions
1. Biocompatibility of dental materials.
2. Biocompatibility.
3. Evaluation tests for biocompatibility of dental materials.
GYPSUM PRODUCTS
Long Answer Question
1. What is calcining? Discuss various methods of manufacturing of POP. describe the control of setting time and setting expansion of gypsum.
2.Enumerate various gypsum products. Write in detail about manufacturing and standardization of dental stone and plaster.
3. Classify gypsum products. Describe in detail about dental plaster.
4. What are gypsum products. Classify them, Describe in detail about alpha calcium sulphate hemihydrate.
Short Answer Questions
1.Type 3 gypsum products.
2.High strength and High expansion of type 4 dental stone.
3. compare and contrast between dental stone n plaster.
4. Dental plaster.
5. Dental stone.
6. Measurement of setting time.
7. Mention various tests used to measure setting time.
8. Hygroscopic setting expansion.
9. Classify Die materials and their ideal requirements.
2M Questions
1. Type 5 gypsum products.
2. dry and wet strength.
8. Green strength of Gypsum.
9. Die hardener and die spacer.
10. Die material.
11. Epoxy resin die.
IMPRESSION MATERIALS
Long Answer Questions
1. Classify impression materials. write in detail about composition, setting reaction and manipulation of impression compound.
3. Classify impression materials. Describe the composition, manipulation, setting reaction of reversible hydrocolloid. add a note on wet field techniques.
4. Classify impression materials. Discuss composition, setting reaction, precautions to be taken to minimize the failure in case of alginate hydrocolloids impression materials.
5. Enumerate elastomeric impression materials. Describe the chemistry composition, properties and uses of addition silicone elastomeric impression material.
2M Questions
1. Fusion temperature in impression compound.
2. Non-eugenol impression paste.
3. Uses of Agar-Agar.
4. Syneresis and imbibition.
5. Modified alginate.
6. Peripheral tracing compound and its uses.7. Fillers in Impression materials.
8. Advantages & Disadvantages of Elastomeric impression material.
11. Advantages and Disadvantages of polyether.
12. Tray adhesives.
POLYMERS
Short Answer Questions
1. Steps in polymerization.
DENTURE BASE RESINS
Long Answer Questions
1. Discuss ideal requirement of denture base material and Describe their defects seen in heat acrylic denture base resins.
2. Classify denture base resins mention its ideal requirements. Describe various modes of polymerization of denture base resins.
3. Write the composition, stages of mixing, and curing cycle of heat cure acrylic denture base resins.
4. Describe in detail about physical and chemical changes seen during polymerization of acrylic resins.
5. Classify denture base resin material write in detail about compression molding technique.
Short Answer Questions
1. Heat cure acrylic resins.
2. Compare and contrast between heat and self cure acrylic resins.
3. Curing cycle in denture base resins.
4. Injection molding technique.
TARNISH AND CORROSION
2M Questions
1. Define Tarnish and Corrosion
2. Galvanism
DIRECT FILLING GOLD
Long Answer Questions
1. Explain DFG. Describe various types of DFG and its manipulation.
2. Write in detail about gold foil and its manipulation. Add a note on degassing procedures.
Short Answer Questions
1.Gold foil.
2.Desorption of DFG.
3. Annealing and its stages.
4. Degassing and compaction procedures in DFG.
2M Questions
1. Precipitated Gold.
2. Cohesive and non cohesive gold
3. Desorption of DFG
4. Degassing
DENTAL CASTING ALLOYS
Long Answer Questions
1. Classify dental casting alloys and write in detail mechanical properties. State briefly about heat treatments.
2. Discuss the composition and physical properties of Cr-Co-Ni base alloys. Write their uses in dentistry.
Short Answer Questions
1. Compare and contrast between between wrought and cast alloys.
2. Cobalt Chromium alloys.
3. Porosities in casting gold alloys.
4. Heat treatment of gold alloys.
5. Base metal alloys.
6. Compare and contrast between Base metal and Noble metal alloys.
2M Questions
1.Noble and precious metals.
2. Causes of surface roughness in gold alloys casting.
3. Quenching.
4. Advantages of Base metal casting alloy.
DENTAL WAXES
Long Answer Questions
1. Classify waxes used in dentistry and its ideal requirements. Write the composition, manipulation, uses and properties of inlay waxes.
2. Classify dental waxes. Write in detail about inlay casting wax .Explain the procedure used for obtaining the wax pattern for an inlay restoration.
Short Answer Questions
1. Inlay wax.
2. Composition and manipulation of inlay wax.
2M Questions
1. Sticky wax.
2. Distortion of inlay wax.
INVESTMENT MATERIALS
Long Answer Questions
1. Classify Investment materials and ideal requirements. Describe in detail about gypsum bonded investment material.
2. Describe different types of Investment material .Write in detail about phosphate bonded investment material.
Short Answer Questions
1. Gypsum bonded investment.
2. Phosphate bonded investment.
2M Questions
1. Advantages of gypsum bonded investment.
2. Silica bonded investment.
CASTING PROCEDURES
Long Answer Questions
1. Describe various steps of casting procedure. Discuss the possible errors that can happen during the procedure which can lead to defective casting. State briefly about casting machines.
2. Classify investment material. Write composition and uses of any one of the following of them. Discuss how will you compensate for casting shrinkage of dental casting alloy.
Short Answer Questions
1. Casting procedures.
2. Sprue former.
3. Causes for defective casting.
5. Microporosity
COMPOSITE RESINS
Long Answer Questions2. Classify composite resins, discuss the tooth color restorations. Enumerate ideal requirement of restorative materials.
3. Classify composite restorative material. Describe various components of composite resins briefly mention advantages and disadvantages of light cure composite resins.
4. Describe the indications, advantages, disadvantages of tooth colored restorative material. Briefly mention advantage disadvantage of composite resins.
Short Answer Questions
1.Hybrid composite
2. Micro-filled composite resins
3. Acid etch technique and its mechanism
4. light cure composite resins
5. Classify composite resins and mention role of fillers in it
2M Questions
1. Resin cements
4.acid etch technique and its mechanism
5. conventional composites
6. Micro filled composite resins
9. bonding agents
10. name fillers in dental materials
11. etching
SILVER AMALGAM
Long Answer Questions
1.Types of silver amalgam alloys. Describe in detail about composition setting reaction of high copper silver alloys.
2. Define amalgam. Describe classification, properties, manipulation of dental amalgam.
3. Define amalgam. Describe classification, properties, manipulation of dental amalgam.
4. Write in detail about composition, properties, manipulation of admixed amalgam alloys.
5. Define trituration. Mention different methods of trituration for silver amalgam. Write the amalgamation reaction of different types of dental amalgam add a note on mercury hygiene.
6. Classify dental amalgam. Write a note on manipulation of silver amalgam from proportioning to carving and finishing.
7. Classification of amalgam alloys. Describe about composition, properties, advantage, disadvantage of amalgam alloys. Add a note on various stages of manipulation of amalgam alloys.
Short Answer Questions
1. Classify dental amalgam.
2. spherical amalgam alloys.
3. compare and contrast between high and low copper amalgam alloys.
4. high copper amalgam alloys.
5. admixed dental amalgam alloys.
7. Eutectic and peritectic alloys.
8. Stoichiometric setting reaction of high copper amalgam .add a note on gamma 2 phase.
9. Delayed expansion.
10. Trituration of dental amalgam.
11. Manipulation of amalgam alloys.
12. Mercury toxicity.
1.Admixed alloys.
2. Silver amalgam alloys.
3. High copper alloys
6. Zinc free alloys
7. pre-amalgamated alloys
8. Trituration
9. gamma 1 phase
10. gamma 2 phase
13. Eames technique
14. Burnishing of silver amalgam
15. mercury toxicity
DENTAL CERAMICS
Long Answer Questions
1.Classify dental ceramics. Describe the composition of dental porcelain. Mention the methods of condensation of dental porcelain and its uses. add a note on manipulation and glazing.
2. enumerate the various ways of producing a ceramic restoration. Write the procedure of condensation and sintering of feldspathic porcelain.
3. Firing of porcelain
4. various methods of condensation and stages of dental porcelain restoration.
5. Classify metal ceramic alloys. Describe the ideal requirement of metal ceramic alloys, describe the various factors which help in bringing an effective bond between ceramic and metal ,state briefly about firing of porcelain.
Short Answer Questions
1. strengthening of dental porcelain
2M Questions
1. castable glass ceramics.
DENTAL BUR
Long Answer Questions
1. classify dental burs and factors affecting the cutting efficiency of dental burs.
2M Questions
1. Dental bur and its function.
2. Rake angle.
3. clearance angle and its importance.
ABRASION & POLISHING
Long Answer Questions
1. Describe in detail about different types of abrasive and polishing agents. Discuss the procedure of polishing and finishing of acrylic resins and chrome cobalt alloy denture.
Short Answer Questions
1.Stainless steel and its types.
2. Stainless steel alloys.
3. Stabilization and sensitization of stainless steel
6. Define sensitization and Stabilization
2M Questions
1. Stainless steel and its types
2. Annealing
SOLDERING & WELDING
Short Answer Questions
1.Soldering and types of soldering techniques.
2. properties of dental solder.
3. welding and solders.
6. manipulation of rubber base impression material.
7. Refractory materials.
8. Flux and anti flux.
9. Describe dental implant materials.
10. Implant abutment.
11. Dental flux.
2M Questions
6. Compare and contrast between welding and soldering.
7. Define soldering and welding
8. Name the types of rubber base impression material
9. Refractory materials
10. flux and anti flux
11. Separating medium used in dentistry.
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