1201. Composite resins for posterior teeth can be considered in :

A. Ares of occlusal stress
B. Centric holding areas
C. Areas of scraped spot/disintegration which are exceptionally touchy *
D. large class II cavities

1202. Posterior composite resin restorations are contraindicated in :

A. Veneer for metal restoration
B. Class IV cavities
C. Poor oral hygiene *
D. Small pit cavities

1203. Advantage of posterior resin restorations is :

A. Low modulus of elasticity
B. Anticaries property
C. Low thermal conductivity *
D. Higher wear resistance

1204. Undesirable properties of resin restorations are/is:

A. Low thermal conductivity
B. Low wear resistance *
C. Poor aesthetics
D. Difficult manipulation

1205. Cavity preparations for composite restoration do not require :

A. Bevelling of cavosurface margin
B. Extension for prevention *
C. Acid etching
D. Retentive under cuts

1206. Bevelling of cavosurface margin:

A. Removes the fluoride -rich enamel
B. Provides more surface area for bonding
C. Both A and B *
D. Provides minimum surface area for bonding

1207. Composite resin restoration of class VI cavity in a posterior tooth can be considered in:

A. Pit caries on the tip of palatal cusp of maxillary molar
B. Pit caries on the buccal cusp tip of maxillary molar *
C. Pit caries on the distobuccal cusp of mandibular molar
D. Caries on marginal ridge arca

1208. Composite resin should be placed in the cavity preparation:

A. In increments of 2mm thickness *
B. In increments of 3-4 mm thickness
C. In a single bulk
D. In increments with stainless steel instrument

1209. The most superior finish surface for a composite resin can be achieved by :

A. White stones
B. Aluminium oxide *
C. Carbide finishing bur
D. Diamond finishing bur

1210. Composite resins are not usually recommended for restoration of Class II cavities because of excessive :

A. Occlusal wear *
B. Marginal fracture
C. Lack of colour stability
D. Isthmus fracture