Similar questions:
Difficulty in seating a stainless steel crown following the preparation of a primary molar is most likely a result of
“ledging” at the gingival area of the preparation.NDEB released questions part 2 set 12
The retention form of a full crown preparation can be improved by
1. reducing its taper.
2. increasing its length.
3. utilizing grooves or boxes.
4. polishing the preparation.
(1) (2) (3)
NDEB released questions part 2 set 14
The gingival margin of the preparation for a full crown on a posterior tooth, with a clinical crown that satisfies the requirements for retention and resistance, should be placed
at least 1mm supragingivallyNDEB released questions part 2 set 15
The gingival margin of the preparation for a full crown on a posterior tooth, with a clinical crown that satisfies the requirements for retention and resistance, should be placed
at least 1mm supragingivally.NDEB released questions set 6
In the preparation of gypsum products, an increase in the water/powder ratio will
None of the above.NDEB released questions set 6
The retention of an indirect, extra-coronal restoration can be improved by
1. decreasing the taper of the preparation wall.
2. lengthening the clinical crown.
3. adding grooves.
4. an antirotation key.
All of the above
NDEB released questions set 6
The retention form of a full crown preparation can be improved by
1. reducing its taper.
2. increasing its length.
3. utilizing grooves or boxes.
4. polishing the preparation.
(1) (2) (3)
NDEB released questions set 7
The preparation of an anterior tooth for a porcelain fused to metal crown should provide
1. adequate length for retention-resistance.
2. space for a thickness of metal that will resist deformation.
3. space for a thickness of porcelain that will be esthetic.
4. a single path of insertion.
All of the above.
NDEB released questions set 12
The retention of an indirect, extra-coronal restoration can be improved by
1. decreasing the taper of the preparation wall.
2. lengthening the clinical crown.
3. adding grooves.
4. an antirotation key
All of the above.
NDEB released questions set 12
The preparation of an anterior tooth for a porcelain fused to metal crown should provide
1. adequate length for retention-resistance.
2. space for a thickness of metal that will resist deformation.
3. space for a thickness of porcelain that will be esthetic.
4. a single path of insertion.
All of the above.
NDEB released questions set 13
In the preparation of gypsum products, an increase in the water/powder ratio will
None of the above.Planets 31
The gingival margin of the preparation for a full crown on a posterior tooth, with a clinical crown that satisfies the requirements for retention and resistance, should be placed
on the enamel.Planets 31
The retention of an indirect, extra-coronal restoration can be improved by
1. decreasing the taper of the preparation wall.
2. lengthening the clinical crown.
3. adding grooves.
4. an antirotation key.
All of the above
Planets 30
The retention form of a full crown preparation can be improved by
1. reducing its taper.
2. increasing its length.
3. utilizing grooves or boxes.
4. polishing the preparation.
(1) (2) (3)
Planets 29
Tooth 1.1 has a small fractured mesioincisal corner into dentin. Which of the following is true with respect to the preparation for the restoration?
An enamel bevel of 1mm is placed where enamel thickness allows.Planets 25
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