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A patient with a pre-existing MOD amalgam restoration has just had endodontic therapy completed on tooth 4.6 but cannot afford a laboratory fabricated final restoration. Interim restorative management of 4.6 with the best prognosis is to
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A dental laboratory has returned a removable partial denture framework. The framework fit the master cast well but when tried in the mouth, a stable fit could not be achieved. The possible cause(s) of the problem is/are
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NDEB released questions part 2 set 13
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A dental laboratory has returned a removable partial denture framework. The framework fit the master cast well but when tried in the mouth, a stable fit could not be achieved. The possible cause(s) of the problem is/are
1. distortion in the final impression.
2. insufficient retention.
3. improper pour of the master cast.
4. casting error.
(1) and (3)
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If a polyvinyl siloxane material is used to make the final impression for a maxillary cast restoration, the impression tray must
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Which of the following is an acceptable means to obtain the gingival retraction that isneeded when using an elastomeric impression material for making a final impression in fixed prosthodontics?
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2. A moist retraction cord.
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(1) (2) (3)
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The muscle of the floor of the mouth in the molar region which requires special attention in the final mandibular denture impression is the
mylohyoid.Planets 31
A dental laboratory has returned a removable partial denture framework. The framework fit the master cast well but when tried in the mouth, a stable fit could not be achieved. The possible cause(s) of the problem is/are
1. distortion in the final impression.
2. insufficient retention.
3. improper pour of the master cast.
4. casting error.
(1) and (3)
Planets 29
Which of the following is/are (an) acceptable mean(s) to obtain the gingival retraction that is needed when using an elastomeric impression material for making a final impression in fixed prosthodontics?
1. Electrosurgery.
2. A moist retraction cord.
3. A copper band that is removed when the impression is made.
4. Using a heavy body material in the impression tray.
All of the above.
Planets 27
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