1191. The self curing composite resins have accelerator as:

A. Organic amine *
B. Peroxide
C. Diketones
D. UV light

1192. Presence of benzoin methyl ether is composite resigns, results in polymerisation in the presence of :

A. Visible light
B. UV light *
C. Infrared light
D. Diketones

1193. Visible light activated resin for system cure in approximately :

A. 60 Sec
B. 90 Sec
C. 30 Sec *
D. 15 Sec

1194. The depth of a cavity preparation for resins :

A. Is limited to enamel
B. Extends 0.5 mm into dentin
C. Depends on pulpul extent of caries *
D. Is 1 mm short of pulp

1195. In modified class III cavity restoration retention is obtained mainly by :

A. Acid etching *
B. Retentive groove/Slot
C. Retentive point
D. Retentive pin

1196. The width of cavosurface level in resin cavities is :

A. 0.25-0.5 mm *
B. 0.5-0.75 mm
C. 0.75-1.00 mm
D. 1.00-1.5mm

1197. The gingival margin is :

A. Always bevelled
B. Not routinely bevelled *
C. Bevelled at 45 Degree
D. Only acid etched

1198. Instruments used for handingly resins are made of :

A. Staineless steel
B. Carbon steel
C. Teflon coated metal *
D. Platinum

1199. Pit and fissure scalants are usually derived from :

A. Bis-GMA resins
B. Polyurethane
C. Both A and B *
D. None of the above

1200. Addition of filters in resins :

A. Increases polymerisation shrinkage
B. Decreases polymerisation shrinkage *
C. Has no effect on shrinkage but increases strenght
D. Decreases wear resistance