Amalgam 1. spherical alloys shrink slightly when setting. 2. lathe cut alloys expand slightly when setting. 3. admix alloys are dimensionally stable when setting. 4. high copper content alloys have improved resistance to tarnish and corrosion.

In determining the ideal proximal outline
form for a Class II amalgam cavity
preparation in a molar the
1. axial wall should be 1.5mm deep.
2. gingival cavosurface margin must
clear contact with the adjacent tooth.
3. proximal walls diverge occlusally.
4. facial and lingual proximal
cavosurface margins must just clear
contact with the adjacent tooth.

(2) and (4)
NDEB released questions set 1

In determining the ideal proximal outline form for a Class II amalgam cavity perparation in a molar the
(1) axial wall should be 1.5mm deep
(2) gingival cavosurface margin must be clear contact with the adjacent tooth
(3) proximal walls diverage occlusally
(4) facial and lingual proximal cavosurface margins must just clear contact with the adjacent tooth

(2) (4)
NDEB released questions 2012 online set 1

In determining the ideal proximal outline form for a Class II amalgam cavity preparation in a molar the
1. axial wall should be 1.5mm deep.
2. gingival cavosurface margin must clear contact with the adjacent tooth.
3. proximal walls diverge occlusally.
4. facial and lingual proximal cavosurface margins must just clear contact with the adjacent tooth.

(2) and (4)
NDEB released questions 2012 online set 2

Amalgam is condensed in order to
1. adapt the amalgam to the cavity walls, floor and margins.
2. develop a uniform compact mass with minimum voids.
3. reduce excess mercury content.
4. overbuild the restoration to allow ‘carve back’ to eliminate the mercury-rich outer layer.

All of the above
NDEB released questions part 2 set 12

Amalgam
1. spherical alloys shrink slightly when setting.
2. lathe cut alloys expand slightly when setting.
3. admix alloys are dimensionally stable when setting.
4. high copper content alloys have improved resistance to tarnish and corrosion.

(4) only
NDEB released questions part 2 set 12

An open proximal contact on an amalgam restoration could have been caused by
1. inadequate wedging.
2. overtightening the matrix band.
3. inadequate condensing forces.
4. simultaneous placement of adjacent proximal restorations.

(1) (2) (3)
NDEB released questions part 2 set 12

The use of cavity varnish under an amalgam restoration will
1. have a bactericidal effect.
2. decrease marginal leakage.
3. stimulate secondary dentine formation.
4. decrease tooth discolouration.

(2) and (4)
NDEB released questions part 2 set 14

Using pins to retain amalgam restorations increases the risk of
1. cracks in the teeth.
2. pulp exposures.
3. thermal sensitivity.
4. periodontal ligament invasion.

All of the above.
NDEB released questions part 2 set 14

Which of the following should be done prior to pin hole placement in an extensive amalgam preparation?
1. Examine the radiograph.
2. Determine the subgingival anatomic contours.
3. Remove caries and unsupported enamel.
4. Place a pilot hole at the dentinoenamel junction.

(1) (2) (3)
NDEB released questions part 2 set 14

Which of the following would occur if a zinc containing amalgam is contaminated with saliva during condensing?
1. No change in compressive strength but lower tensile strength.
2. Increased expansion.
3. Reduced flow or creep.
4. Increased surface pitting

(2) and (4)
NDEB released questions part 2 set 14

To minimize fractures of amalgam restorations in deciduous teeth, cavity preparations should have
1. concave pulpal floors.
2. rounded axiopulpal line angles.
3. rounded proximal retention grooves.
4. lateral walls parallel to the external surface of the tooth.

(2) (3) (4)
NDEB released questions set 4

Which of the following is/are essential when using spherical rather than admix alloy for a routine amalgam restoration?
1. a larger diameter condenser.
2. an anatomical wedge.
3. decreased condensing pressure.
4. a dead soft matrix band.

(1) and (3)
NDEB released questions set 4

Dental amalgams that are made from alloys containing 6 percent copper, compared to those made from alloys containing 13 percent copper
1. have higher concentration of the tin-mercury phase.
2. are more resistant to tarnish and corrosion.
3. demonstrate less creep or flow.
4. generally have lower compressive strength.
5. demonstrate less marginal breakdown in clinical service.

(1) and (4)
NDEB released questions set 6

Which of the following would occur if a zinc containing amalgam is contaminated with saliva during condensing?
1. No change in compressive strength but lower tensile strength.
2. Increased expansion.
3. Reduced flow or creep.
4. Increased surface pitting.

(2) and (4)
NDEB released questions set 6

Which of the following should be done prior to pin hole placement in an extensive amalgam preparation?
1. Examine the radiograph.
2. Determine the subgingival anatomic contours.
3. Remove caries and unsupported enamel.
4. Place a pilot hole at the dentino-enamel junction.

(1) (2) (3)
NDEB released questions set 6

Amalgam
1. spherical alloys shrink slightly when setting.
2. lathe cut alloys expand slightly when setting.
3. admix alloys are dimensionally stable when setting.
4. high copper content alloys have improved resistance to tarnish and corrosion.

(1) and (3)

(4) only

(1) (2) (3)

All of the above.

(2) and (4)

0 explanations

Similar questions:

Amalgam is condensed in order to
1. adapt the amalgam to the cavity walls, floor and margins.
2. develop a uniform compact mass with minimum voids.
3. reduce excess mercury content.
4. overbuild the restoration to allow ‘carve back’ to eliminate the mercury-rich outer layer.

Amalgam
1. spherical alloys shrink slightly when setting.
2. lathe cut alloys expand slightly when setting.
3. admix alloys are dimensionally stable when setting.
4. high copper content alloys have improved resistance to tarnish and corrosion.

An open proximal contact on an amalgam restoration could have been caused by
1. inadequate wedging.
2. overtightening the matrix band.
3. inadequate condensing forces.
4. simultaneous placement of adjacent proximal restorations.

The use of cavity varnish under an amalgam restoration will
1. have a bactericidal effect.
2. decrease marginal leakage.
3. stimulate secondary dentine formation.
4. decrease tooth discolouration.

Using pins to retain amalgam restorations increases the risk of
1. cracks in the teeth.
2. pulp exposures.
3. thermal sensitivity.
4. periodontal ligament invasion.

Which of the following should be done prior to pin hole placement in an extensive amalgam preparation?
1. Examine the radiograph.
2. Determine the subgingival anatomic contours.
3. Remove caries and unsupported enamel.
4. Place a pilot hole at the dentinoenamel junction.

Which of the following would occur if a zinc containing amalgam is contaminated with saliva during condensing?
1. No change in compressive strength but lower tensile strength.
2. Increased expansion.
3. Reduced flow or creep.
4. Increased surface pitting

To minimize fractures of amalgam restorations in deciduous teeth, cavity preparations should have
1. concave pulpal floors.
2. rounded axiopulpal line angles.
3. rounded proximal retention grooves.
4. lateral walls parallel to the external surface of the tooth.

Which of the following is/are essential when using spherical rather than admix alloy for a routine amalgam restoration?
1. a larger diameter condenser.
2. an anatomical wedge.
3. decreased condensing pressure.
4. a dead soft matrix band.

Which of the following would occur if a zinc containing amalgam is contaminated with saliva during condensing?
1. No change in compressive strength but lower tensile strength.
2. Increased expansion.
3. Reduced flow or creep.
4. Increased surface pitting.

Which of the following should be done prior to pin hole placement in an extensive amalgam preparation?
1. Examine the radiograph.
2. Determine the subgingival anatomic contours.
3. Remove caries and unsupported enamel.
4. Place a pilot hole at the dentino-enamel junction.

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Amalgam1. spherical alloys shrink slightly when setting.2. lathe cut alloys expand slightly when setting.3. admix alloys are dimensionally stable when setting.4. high copper content alloys have improved resistance to tarnish and corrosion.

(1) and (3)

(4) only

(1) (2) (3)

All of the above.

(2) and (4)

0 explanations

Similar questions:

Amalgam is condensed in order to1. adapt the amalgam to the cavity walls, floor and margins.2. develop a uniform compact mass with minimum voids.3. reduce excess mercury content.4. overbuild the restoration to allow ‘carve back’ to eliminate the mercury-rich outer layer.

Amalgam1. spherical alloys shrink slightly when setting.2. lathe cut alloys expand slightly when setting.3. admix alloys are dimensionally stable when setting.4. high copper content alloys have improved resistance to tarnish and corrosion.

An open proximal contact on an amalgam restoration could have been caused by1. inadequate wedging.2. overtightening the matrix band.3. inadequate condensing forces.4. simultaneous placement of adjacent proximal restorations.

The use of cavity varnish under an amalgam restoration will1. have a bactericidal effect.2. decrease marginal leakage.3. stimulate secondary dentine formation.4. decrease tooth discolouration.

Using pins to retain amalgam restorations increases the risk of1. cracks in the teeth.2. pulp exposures.3. thermal sensitivity.4. periodontal ligament invasion.

Which of the following should be done prior to pin hole placement in an extensive amalgam preparation?1. Examine the radiograph.2. Determine the subgingival anatomic contours.3. Remove caries and unsupported enamel.4. Place a pilot hole at the dentinoenamel junction.

Which of the following would occur if a zinc containing amalgam is contaminated with saliva during condensing?1. No change in compressive strength but lower tensile strength.2. Increased expansion.3. Reduced flow or creep.4. Increased surface pitting

To minimize fractures of amalgam restorations in deciduous teeth, cavity preparations should have 1. concave pulpal floors. 2. rounded axiopulpal line angles. 3. rounded proximal retention grooves. 4. lateral walls parallel to the external surface of the tooth.

Which of the following is/are essential when using spherical rather than admix alloy for a routine amalgam restoration? 1. a larger diameter condenser. 2. an anatomical wedge. 3. decreased condensing pressure. 4. a dead soft matrix band.

Which of the following would occur if a zinc containing amalgam is contaminated with saliva during condensing? 1. No change in compressive strength but lower tensile strength. 2. Increased expansion. 3. Reduced flow or creep. 4. Increased surface pitting.

Which of the following should be done prior to pin hole placement in an extensive amalgam preparation? 1. Examine the radiograph. 2. Determine the subgingival anatomic contours. 3. Remove caries and unsupported enamel. 4. Place a pilot hole at the dentino-enamel junction.

Amalgam
1. spherical alloys shrink slightly when setting.
2. lathe cut alloys expand slightly when setting.
3. admix alloys are dimensionally stable when setting.
4. high copper content alloys have improved resistance to tarnish and corrosion.

Amalgam is condensed in order to
1. adapt the amalgam to the cavity walls, floor and margins.
2. develop a uniform compact mass with minimum voids.
3. reduce excess mercury content.
4. overbuild the restoration to allow ‘carve back’ to eliminate the mercury-rich outer layer.

Amalgam
1. spherical alloys shrink slightly when setting.
2. lathe cut alloys expand slightly when setting.
3. admix alloys are dimensionally stable when setting.
4. high copper content alloys have improved resistance to tarnish and corrosion.

An open proximal contact on an amalgam restoration could have been caused by
1. inadequate wedging.
2. overtightening the matrix band.
3. inadequate condensing forces.
4. simultaneous placement of adjacent proximal restorations.

The use of cavity varnish under an amalgam restoration will
1. have a bactericidal effect.
2. decrease marginal leakage.
3. stimulate secondary dentine formation.
4. decrease tooth discolouration.

Using pins to retain amalgam restorations increases the risk of
1. cracks in the teeth.
2. pulp exposures.
3. thermal sensitivity.
4. periodontal ligament invasion.

Which of the following should be done prior to pin hole placement in an extensive amalgam preparation?
1. Examine the radiograph.
2. Determine the subgingival anatomic contours.
3. Remove caries and unsupported enamel.
4. Place a pilot hole at the dentinoenamel junction.

Which of the following would occur if a zinc containing amalgam is contaminated with saliva during condensing?
1. No change in compressive strength but lower tensile strength.
2. Increased expansion.
3. Reduced flow or creep.
4. Increased surface pitting

To minimize fractures of amalgam restorations in deciduous teeth, cavity preparations should have
1. concave pulpal floors.
2. rounded axiopulpal line angles.
3. rounded proximal retention grooves.
4. lateral walls parallel to the external surface of the tooth.

Which of the following is/are essential when using spherical rather than admix alloy for a routine amalgam restoration?
1. a larger diameter condenser.
2. an anatomical wedge.
3. decreased condensing pressure.
4. a dead soft matrix band.

Which of the following would occur if a zinc containing amalgam is contaminated with saliva during condensing?
1. No change in compressive strength but lower tensile strength.
2. Increased expansion.
3. Reduced flow or creep.
4. Increased surface pitting.

Which of the following should be done prior to pin hole placement in an extensive amalgam preparation?
1. Examine the radiograph.
2. Determine the subgingival anatomic contours.
3. Remove caries and unsupported enamel.
4. Place a pilot hole at the dentino-enamel junction.