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25 Cards in this Set
- Front
- Back
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What is the depth and type of bevel for the finish line on the lingual of the anterior PFM?
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1.0 mm Chamfer bevel
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What is the depth and type of bevel for the finish line on the facial of the anterior PFM?
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1.5 mm Shoulder bevel
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What is the planar incisal reduction for an anterior PFM?
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1.5-2.0 mm
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What does preservation of the lingual axial wall relate to?
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Retention form- This wall should be parallel to the gingival aspect of the axiofacial wall.
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What is the depth of your lingal reduction?
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1.5 mm
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How high should the finish line be above the gingiva?
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1.0-0.5mm
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How many planes does the facial contour of the central incisor have?
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two- incisal and gingival
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Which components of the anterior PFM provide Marginal Integrity?
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The Facial Shoulder bevel and the Lingual Chamfer bevel
(A&E) |
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Which components of the anterior PFM provide Structural Durability?
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Facial Shoulder Bevel
Axial Reduction Incisal Notch (ABC) |
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Which part of the anterior PFM contributes Preservation of the tooth structure?
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Wing
(D) |
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Which components of the anterior PFM contribute to the retention and resistance form?
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Axial Reduction
Wing (BD) |
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What is the finish line design for an anterior PFM?
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Shoulder/sloped shoulder- facial aspect, extend lingual to the M/D contacts
Chamfer- lingual aspect |
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What are the two materials that compose a PFM?
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Metal coping
Porcelain veneer |
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What creates the masking of the metal substructure in a PFM?
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1. Opaque Layer
2. Body Layer 3. Incisal Layer |
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What is the ideal metal coping thickness for a PFM?
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0.5 - 0.3 mm
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What is the M/D extent of the reduction index?
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1 or 2 teeth distal to prepared abutment
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What depth should your incisal orientation groove be?
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1/2 of your tapered diamond bur thickness
(reduction is 1.5mm) |
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T/F
The incisal reduction of an anterior PFM is parallel to the formal incisal edge with a lingual apical slope? |
True
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What provides RETENTION FORM on the lingual wall?
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Preservation of the lingual axial wall so that it is parallel to the gingival aspect of the axiofacial wall
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Which burs are best to use on the lingual axial reduction?
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Torpedo diamond
Carbide finishing |
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What is the name of the area where the shoulder finish line joins the chamfer line interproximally?
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Transition area
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What is the Planar Incisal Reduction?
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1.5-2.0mm
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Which bur is used for Lingual Reduction (not lingual axial reduction)
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Small Wheel Diamond
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Which bur is used for facial axial finishing?
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171 carbide bur
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Which bur is used for shoulder finishing?
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957 bur
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