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NEETMDS- Conservative Dentistry mcq
MDS PREP
Which of the following principles of the cavity preparation is not considered much in modern methods of restorative dentistry?
1) Extension for prevention
2) Convenient form
3) Removal of the undermined enamel
4) Removal of the carious dentin
Conservative Dentistry Answer: 1

Cavity preparation can be limited to proximal surface in class II cavities when
1) Caries is present below the contact point
2) Caries does not undermine enamel
3) Facial and lingual cavosurface margins can be placed in self-claening areas
4) All of the above
Conservative Dentistry Answer: 4

Which of the following is not true about lubricant for rubber dam placement?
1) Should have water-miscible vehicle
2) Vaseline is an ideal choice
3) Should be easy to remove
4) Should not interfere with bonding procedure
Conservative Dentistry Answer: 2

The high compressive strength of high copper alloy is due to
1) Elimination of Gamma phase
2) Eutechtic in nature
3) Elimination of Gamma2 phase
4) All of the above
Conservative Dentistry Answer: 3

Preparation of class I cavities for dental amalgam, direct filling gold or gold inlays have in common
1) Occlusally diverging facial and lingual walls
2) Occlusally diverging mesial and distal walls
3) Occlusally diverging facial and lingual walls
4) Occlusally diverging mesial and distal walls
Conservative Dentistry Answer: 2

Type IV gold is not selected for inlays because
1) Low percentage elongation
2) High ductility
3) High strength
4) High proportional limit
Conservative Dentistry Answer: 1

The best method to patch a leaking rubber dam
1) Apply calcium hydroxide
2) Apply cavity varnish
3) Suturing with silk
4) None
Conservative Dentistry Answer: 1

Pins used with amalgam restorations mainly
1) Increase retention and resistance
2) Decrease retention and resistance
3) Increase retention but decrease resistance
4) Decrease retention but increase resistance
Conservative Dentistry Answer: 3

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