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19 Cards in this Set
- Front
- Back
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A class III prep is located on
a) Gingival 1/3 of anterior tooth b) Mesial of anterior tooth c) Distal of posterior tooth |
Mesial of anterior tooth
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How long do you etch for prior to bonding?
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15 seconds
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Which prepared wall is closest to the pulp
a) axial wall b) incisal wall c) gingival wall |
Axial wall
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Bonding of a tooth involves all except
a) Reduces microleakage b) Weakens tooth c) Reduces tooth structure removed d) Reinforces tooth structure e) Sealing |
weakens tooth
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Bonding a tooth?
all of the above surface energy (can't exactly remember the question) |
Acid etch creates a high surface energy enamel and allows a resin to wet the surface and penetrates into the microporosities.
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What is the proper sequence of doing composite?
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Etch, Primer, Bond, Composite
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A class V prep is on?
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Gingival 1/3 surface of Any tooth
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The layer where composite integrates into the dentin is?
a) Mixed layer b) Hybrid layer |
Hybrid layer
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The surface of the tooth should be ______ after etching
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Moist and free of saliva and blood
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What do we use to etch?
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37% Phosphoric acid
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T/F
You always place a groove on class III preps |
False
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Design of the cavity prep is dictated by
a) The extent of caries b) Restorative material chosen c) Type of tooth d) All of the above e) a & b |
a & b
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The design of a cavity prep that allows the restoration to resist forces that tend to displace it by torquing or tipping is known as
a) Resistance form b) Retention form c) Outline form d) Convenience |
Resistance form
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On a class II prep, if we place a bevel where should we place it?
a) facial b) lingual c) occlusal |
Facial & Lingual
(Never on the occlusal because it will be very thin, bevel is purely esthetic purposes) |
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What are advantages of posterior composite restorations?
a) Aesthetics b) Elimination of galvanic current c) Conservation of tooth structure d) Adhesion to tooth e) Elimination of galvanic current f) all of the above |
all of the above
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Where is the bevel placed on a class II prep?
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Bevel is placed on facial and lingual
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Why would you not be able to do a composite restoration?
a) Isolation impossible b) Too big of an area c) Subgingival margins d) All contacts on restoration e) all of the above |
all of the above
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Is bruxing an absolute contraindication for composites?
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No
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What determines the shrinkage direction?
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Cavity shape and Bonded surfaces
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