GI and Liners and Bases PDF

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quiz on glass ionomer and liners and bases...

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Quiz on Liners and Bases 1. Glass ionomer has a coefficient of thermal expansion similar to the tooth, which may help reduce microleakage and prevent post-operative sensitivity. - TRUE 2. The acceptable film thickness of a cavity varnish to be able to protect the tooth surface is: - 2-5um 3. When manipulating zinc phosphate cement, mixing by incorporating small increments would result to: - All the choices provided are correct/ buffer the acid 4. A material of minimal thickness that protects against ingress of bacteria and its by-product and the restoration and provide therapeutic effect. - DENTAL LINER 5. Which among the following is an example of a Modified Zinc Oxide Eugenol Cement? -EBA 6. Varnish should be applied: - 2 THIN LAYER 7. Zinc phosphate cement does not exhibit chemical bonding to the tooth structure. - TRUE 8. The acceptable thickness of a Dental Liner to provide protection to the pulp and other dental tissue is: - 0.2-1 mm 9. What is the pH of Zinc Phosphate: - 2-4 10. Calcium Hydroxide is considered to be bactericidal due to its high pH. - TRUE 11. The disadvantage of this material is its inability to withstand the forces of condensation immediately after placement: -ZINC OXIDE EUGENOL 12. Light cured Resin based Calcium hydroxide do not show any harm effects to the pulp and do not exhibit any bactericidal effect. - TRUE 13. Which insulating base is the material of choice under composite resin? - CALCIUM HYDROXIDE 14. When resin-based Calcium Hydroxide is used, the stimulation of growth factors in the dental matrix is faster. - TRUE 15. Said to be the least irritating of all dental materials:

- CAVITY VARNISH 16. The Freeze Slab technique is used in the manipulation of Zinc Phosphate Cement to: -INCREASE SETTING TIME 17. This is an example of a Dental liner: - GLASS IONOMER 18. Desensitizers used to prevent hypersensitivity is used in the following manner: -APPLIED ON ALL EXPOSED DENTIN 19. Unacceptable method of controlling setting time of zinc phosphate cements: -VARYING W/P RATIO 20. Zinc mixed with a base consistency should be: -THICK AND PUTTY LIKE 21. To control the setting time of Zinc phosphate the following can be done: - MIXED ON A COOL GLASS SLAB 22. The following are functions of dental bases except: - STIMULATE FORMULATION OF TERTIARY DENTIN 23. Thin mix of Zinc Phosphate cement is more irritating that thick mix. - TRUE 24. A material of minimal thickness and functions to replace lost dentin and protect underlying tooth tissue; - CAVITY SEALER 25. A dental base material that is compatible with the dentin and pulp complex: - GLASS IONOMER 26. Though this material does not bond to the tooth structure, it provide excellent marginal seal. - ZINC OXIDE EUGENOL 27. Polycarboxylate cement is more soluble in water and oral fluids that zinc phosphate cements. - TRUE 28. Patients who have high lactic acid in the mouth would result to breakdown: - ZINC POLYCARBOXYLATE 29. When mixing Zinc Polycarboxylate cement the powder should be incorporated to the liquid all at once. - TRUE 30. Retention of Zinc phosphate in the cavity preparation is through the following except: - PHYSICAL ADHESION

31. Microporosities formed by demineralization form to aid in the sealing and in the retention of base and liner materials. - TRUE 32. Set Zinc Phosphate cement material becomes neutral within: - 48 HRS 33. Mixed to a secondary consistency with thick consistency and provide thermal insulation. - BASE 34. The dentist may reduce the incidence of bond failure between the tooth and the dental base or liner by making sure that the tooth surface is clean. - TRUE 35. When the liquid for Zinc Phosphate Dental Cements turn cloudy it should be: - DISCARDED 36. Thickness of insulating base material is: - 1-2 mm 37. Materials placed between the restorative material an dentin: - INTERMEDIATE RESTORATIVE MATERIAL 38. The reason why varnish is contraindicated under composite resin is: - IT INHIBITS OF COMPOSITE TO TOOTH STRUCTURE 39. Which of the following is the material of choice as an insulating and sedative base. - ZINC OXIDE EUGENOL 40. The polyacrylic acid component of polycarboxylate cement is very acidic, it becomes neutral when: - POWDER IS MIXED WITH THE POLYACRYLIC ACID 41. Zinc phosphate cement decreases its acidity after: - 24 HRS

Quiz on Glass Ionomer 1. The properties of compomer is inferior to resin modified glass ionomer. - FALSE 2. Type II Glass ionomer is also known as: - RESTORATIVE CEMENTS 3. Another term for polyacid modified composite resin is: - COMPOMER 4. This material is added to increase the radiodensity of Glass ionomer cement: - BARIUM 5. To prevent over drying or dehydration of a set Glass ionomer restoration, it Is protected by: - NONE OF THE PROVIDED ARE CORRECT 6. The reason for good margin adaptation of glass ionomer cement is the similarity of the coefficient of thermal expansion of the cement to the dental hard tissue - TRUE 7. Hybrid glass ionomer is also known as: - RESIN MODIFIED GLASS IONOMER 8. A type of glass ionomer which has the glass and metal react with the liquid resulted to improved fracture toughness and at the same time maintained esthetics. - CERMET 9. Type V Glass ionomer cement is known as: - ORTHODONTIC CEMENT 10. Type I Glass ionomer cement is also known as: - LUTING CEMENTS 11. GIC causes more pulp reaction than in ZOE - TRUE 12. Polyacrylic acid is used to condition the cavity walls before placement of Glass Ionomer - TRUE 13. Loss of gloss in the mixture of a glass ionomer would mean: - MIXTURE SHOULD BE REPLACED 14. Contouring and finishing can begin 15 mins after placement of glass ionomer. - FALSE 15. Type VI Glass ionomer cement is also known as: - Core Build-up cement 16. Failure of Glass ionomer cements is observed at the interface of cement and tooth structure. - FALSE 17. Materials of choice for non-carious cervical defects: - COMPOMER 18. Type III glass ionomer cement is also known as: - LINER 19. The Setting reaction of glass ionomer is: - ACID-BASE REACTIONS 20. Water is critical for the reaction of glass ionomer. - TRUE 21. The longevity of glass ionomer cement as a restorative material for root caries is excellent. - TRUE 22. The essential component of glass ionomer is: - POLYMERIC WATER SOLUBLE ACID, BASIC GLASS WATER 23. Type of bonding between dentin and Glass ionomer is: - CHEMICAL BOND

24. Glass ionomer is sensitive to moisture during: - INITIAL SETTING 25. A modification of Glass ionomer where BIS-GMA and TEGDMA are added to the powder and HEMA to the liquid - RESIN MODIFIED GLASS IONOMER 26. Which among the type of Glass Ionomer have the highest cumulative release of fluoride after 30 days of placement. - LINER 27. Glass ionomer is a hybrid of silicate and polycarboxylate liquid. - TRUE 28. The bond of Glass ionomer is higher in dentin than in enamel. - FALSE 29. Final finishing of glass ionomer is done: - 24 HRS 30. The mixture of Silver alloy and GIC did not drastically improve the property of the resulting product. - TRUE 31. Type IV glass ionomer cement is also known as: - FISSURE SEALANT 32. A modification of GIC which has glass and silver-tin-titanium powder sintered at high temperature and reacted with the polyacrylic acid - CERMET 33. Fluoride can be taken up by Glass ionomer cement in its early existence in the oral cavity. - TRUE 34. Adhesion of glass ionomer cement with the tooth surface is caused by micromechanical interlocking - TRUE 35. Type IX glass ionomer cement is known as: - ATRAUMATIC CEMENT 36. For tunnel preparation the material of choice is glass ionomer. - FALSE 37. It is the combination of composite and glass ionomer cement. - POLYACID MODIFIED COMPOSITE RESIN 38. The meaning of the acronym ASPA is: - Aluminosilicate Polyacrylic Acid 39. The mixture of Silver alloy and GIC did not drastically improve the property of the resulting product. - TRUE 40. Mechanical property of this modified glass ionomer is inferior to conventional glass ionomer - COMPOMER...