1.Which one of the following dental cement accelerates the formation of reparative dentin ?

A. Zinc oxide
B. Calcium Hydroxide
C. Eugenol
D. Silica

Answer. B

2.Which of the materials could be used for cementing a bridge as well a restoring a cervical lesion?

A. Glass ionomer cement
B. Zinc polycarboxylate
C. Zinc phosphate
D. Zinc oxide eugenol

Answer: A

Only glass ionomer is used as a cement (luting agent) and a permanent restorative material. GIC is often used for root surface carious lesions because of the potential advantage of fluoride release in helping to control the spread of caries.

3.Calcium hydroxide is used in deep cavities in order to;

A. Form dentin bridge
B. To kill microorganisms
C. To cause necrosis
D. As a base under restoration

Answer: A

A deep Caries excavation close to the pulp which may result in either an undetected pulpal exposure or a visible pulpal exposure should be covered with a calcium hydroxide liner that can stimulate formation of dentim bridge (reperative dentin) over the exposure

4.Vitremer is?

A. Resin modified GIC
B. Metal modified GIC
C. Organically modified composite
D. Polyacid modified composite

Answer: A

Vitremer is a commercial preparation of resin modified GIC

5.Bond found in GIC is;

A. Covalent bond
B. Ionic bond
C. Hydrogen bond
D. Metallic bond

Answer: B