MDS PREP

Bonding of composite restorations to dentin depends on
1. Acid etching of dentin
2. Difunctional coupling agents
3. Chemical bonding
4. All of the above

Conservative Dentistry Answer: 2

The cavity wall should have a taper of
1) 30-40
2) 5-10
3) 2-5
4) None of the above

Conservative Dentistry Answer: 3

Extension for prevention is directly related to
1) Removal of unsupported enamel on proximal surface of class III cavity
2) Elimination of all carious dentin beyond average depth of pulpal wall
3) The outline form of the cavity preparation
4) None of the above

Conservative Dentistry Answer: 3

After trituration and condensation of the amalgam, dimensional changes in it can be best described as
1) Contraction followed by expansion
2) Expansion followed by contraction
3) Only expansion
4) Only contraction

Conservative Dentistry Answer: 1

Pin failures with cemented pins mainly occur
1) Within the restoration
2) Within the tooth structure
3) Cement-tooth interface
4) Cement-pin interface

Conservative Dentistry Answer: 4

Secondary flare provides a marginal metal of
1) 10-20 degrees
2) 30-40 degrees
3) 140-150 degrees
4) None of the above

Conservative Dentistry Answer: 2

In a cavity preparation in which the remaining thickness of dentin is more than 1.5 mm, the ideal base is
1) Glass ionomer
2) Zinc phosphate
3) Silicophosphate
4) None of the above

Conservative Dentistry Answer: 2

Contamination with moisture of zinc containing amalgams result in
1) Pitting and decreased corrosion resistance
2) Decrease in strength
3) Postoperative pain due to expansion of the amalgam
4) All of the above

Conservative Dentistry Answer: 4

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MDS PREP

Bonding of composite restorations to dentin depends on 1. Acid etching of dentin2. Difunctional coupling agents3. Chemical bonding4. All of the above

The cavity wall should have a taper of1) 30-402) 5-103) 2-54) None of the above

Extension for prevention is directly related to1) Removal of unsupported enamel on proximal surface of class III cavity2) Elimination of all carious dentin beyond average depth of pulpal wall3) The outline form of the cavity preparation4) None of the above

After trituration and condensation of the amalgam, dimensional changes in it can be best described as1) Contraction followed by expansion2) Expansion followed by contraction3) Only expansion4) Only contraction

Pin failures with cemented pins mainly occur1) Within the restoration2) Within the tooth structure3) Cement-tooth interface4) Cement-pin interface

Secondary flare provides a marginal metal of 1) 10-20 degrees2) 30-40 degrees3) 140-150 degrees4) None of the above

In a cavity preparation in which the remaining thickness of dentin is more than 1.5 mm, the ideal base is1) Glass ionomer2) Zinc phosphate3) Silicophosphate4) None of the above

Contamination with moisture of zinc containing amalgams result in1) Pitting and decreased corrosion resistance2) Decrease in strength3) Postoperative pain due to expansion of the amalgam4) All of the above

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Bonding of composite restorations to dentin depends on
1. Acid etching of dentin
2. Difunctional coupling agents
3. Chemical bonding
4. All of the above

The cavity wall should have a taper of
1) 30-40
2) 5-10
3) 2-5
4) None of the above

Extension for prevention is directly related to
1) Removal of unsupported enamel on proximal surface of class III cavity
2) Elimination of all carious dentin beyond average depth of pulpal wall
3) The outline form of the cavity preparation
4) None of the above

After trituration and condensation of the amalgam, dimensional changes in it can be best described as
1) Contraction followed by expansion
2) Expansion followed by contraction
3) Only expansion
4) Only contraction

Pin failures with cemented pins mainly occur
1) Within the restoration
2) Within the tooth structure
3) Cement-tooth interface
4) Cement-pin interface

Secondary flare provides a marginal metal of
1) 10-20 degrees
2) 30-40 degrees
3) 140-150 degrees
4) None of the above

In a cavity preparation in which the remaining thickness of dentin is more than 1.5 mm, the ideal base is
1) Glass ionomer
2) Zinc phosphate
3) Silicophosphate
4) None of the above

Contamination with moisture of zinc containing amalgams result in
1) Pitting and decreased corrosion resistance
2) Decrease in strength
3) Postoperative pain due to expansion of the amalgam
4) All of the above