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21 Cards in this Set
- Front
- Back
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T/F
The marginal fit of a definitive restoration is essential in preventing recurrent caries and therefore exposure of the finish line must be reproduced within the final impression exclusively at the interproximal regions. |
False
It has to be everywhere in relation to the finish line. |
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T/F
Chemicomechanical gingival displacement is the combination of chemical action with pressure packing of retraction cord thereby enlarging the gingival sulcus and controlling crevicular fluids. |
True
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Retraction cord should meet which of the following criteria for clinical effectiveness?
a) Braided retraction cord limited side effects and position tissues in an apical direction b) Effective tissue displacement absence of irreversible tissue damage with limited systemic effects c) Hemostatic in nature gingival enlargement and displacement permanent tissue. |
Effective tissue displacement absence of irreversible tissue damage with limited systemic effects
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A final impression for a cast restoration should meet the following requirements?
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Exact duplication of abutments other teeth and tissues adjacent to prepared teeth must be reproduced free of bubbles particularly in the area of the finish line and the occlusal 1/3 of the adjacent and contralateral dentition within the arch
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T/F
The maximum amount of time the clinician has to pour a final impression fabrication with PVS impression material is 7 days. |
True
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What is the optimum crown to root ratio for a single abutment to receive a cast restoration?
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1:3
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The design and execution of a prep to receive a definitive cast restoration is governed by which of the following?
a) Marginal integrity b) structural durability c) retention and resistance d) preservation of the periodontium e) all of the above |
All of the above
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What two elements are the KEY factors that govern the design and execution of a prep to receive a definitive cast restoration?
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Retention and Resistance
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What are essential elements of retention form for a preparation?
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Two opposing vertical surfaces
Parallel internal and external surfaces (internal surfaces are like a box or a groove) |
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What is the most desireable pontic form when creating a realistic emergence profile by nature of the pontic contours?
a) hygienic b) ridge lap c) modified ridge lap d) ovate |
Ovate
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What is the composition of Jet?
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acrylic
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T/F
Secondary plane reduction is of minor importance to the clinical success of the definitive restoration |
False
It is key to the success of the restoration |
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Seating pressure directly over a prepared tooth when making a direct provisional typical results in hyper occlusion.
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F???
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The main disadvantage of Jet is?
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Exothermic reaction setting
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If your provisional keeps cracking along the DL of the anterior retainer, what is the probable cause?
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Single abutment preparation rather than concurrent abutment.
Probable undercut on the abutment |
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If your provisional keeps cracking along the DL of the anterior retainer, How do you fix it?
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Evaluate the line of draw and alter the distal wall of the anterior abutment
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When evaluating the clinical span length for a patient to receive a FPD what are the determining factors when considering the amount of hard and soft tissues required for the replacement of missing structures?
a) Combination of the clinical crown and root surface b) Edentulous span configuration c) Presence of a pier abutment d) Anterior posterior deflection e) All of the above |
Combination of clinical crown and root surface
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The occlusal reduction for an abutment to receive a FGC is?
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1.0 & 1.5 mm
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The measurement of occlusal reduction with a ball reduction gauge is made from which of the following points on a FGC#30 prep?
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Measurement is from the cusp tip
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What is the measurement for axial reduction to receive a FGC?
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1.0 mm
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The depth of the finish line is measured with which of the following instruments?
a) Boley gauge b) Diamond bur c) Perio probe |
Diamond bur
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