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21 Cards in this Set
- Front
- Back
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Facial finish line design
max esthetics? min esthetics? |
subginigval shulder
beveled shoulder |
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Estehtic evaluation
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patient expectations
smile line facial finish line exisitng restorations occlusion |
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finish-line and occlusion determiend when?
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prior to beginning prep
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mandibular teeth critical in what?
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not finishline design but occlusal esthetics
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Porcelain fused metal needs how much reduction?
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1.0-1.2 for esthetics and strength
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Facial shoulder forms a blank angle with?
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-90 degree with tooth beyond finish line
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how many facial planes?
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2
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incisal edge tapers toward?
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lingual
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lingual surface needs to be
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concave
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must maintain hieght of
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cingulum
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Prep steps:
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Incisal reduction-2mm
Lingual clearance-1-1.5 mm Facial reduction-1.5mm Proximal reduction Lingual reduction Cingulum Fossa Finish-shoulder and walls |
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Incisal reduction is?
how to? |
2.0mm
indp. from clearance necessary for adequate incisal translucence 57-010 depth grooves at 1.5mm deep |
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lingual clearance is
bur? |
1.0-1.5
7404-14 RGS 3 must past clearly throguh |
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Facial reduction
tool? lack of leads to? overtaper leads to? shoulder? |
57-010 depth grooves, 2 in each plane
use 856-016 diamond to do initl faical reduction keeping even axial depth maintain 2 planes -thin porcelain or overcontour -overtaper excessive thickness and pulplan encorachment -extend into proximals |
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Lingual Redcution
tool? |
878-12 to reduce cingulum and create axial wall and finishline being careful to line up lingual with facial wall
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Lingual Reduction determined by?
tool? |
opposing occlusion
7404-14 |
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Evaluating Facial Reduction
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make pre-op putty stent
section it in 1/2 mesidistally along incisal edge and facial sruface use each section to determine amount of tooth removed |
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Finish facial/lingual surfaces
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-856-016, 7675 to smooth surface of prep
878k-012, 7653 |
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Finish at shoulder
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-end cutting diamond 10839-012 to smooth shoulder/remove lip on end of shoulder
-create 90 degree angle with cavosurface beyond finishline |
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end cutting diamond bur
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-1.2mm diamer
-beveled edges to allow bur to sit on shoulder and leave internal angle rounded -cutting surface is center of bur |
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canine incisal reduction
lingual clearnace amount of facial planes lingual surface? |
2mm
1.0-1.5 3 convex |
