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22 Cards in this Set
- Front
- Back
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Lava/P2Z: indications (2)
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-no metal (preference/allergies)
-not enough space for PFM (general, as alternate to PFM) |
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Lava/P2Z: contraindications
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-parafunctional habits (clenching, bruxing)
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What's good about zirconia? (5)
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-can fit better than metal
-similar translucency to natural dentin -insoluble:. good longterm strength -? fills in small cracks on it's own due to crystal expansion?? -high strength of flexion |
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Prep characteristics for Lava (3)
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-slightly tapered walls for retension
-leave enough room for core material and porcelain veneering incisally -rounded internal angles |
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Incisal Guide Table Materials (3) (?)
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-Dura Lay
-cellophane -vaseline for end of pin |
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step 4 in ODTP
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-oral hygiene instruction
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do we redo hard charting for recall patients?
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-rarely
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what type of feature is axial wall taper
How much taper is optimal |
-retention
-6-10deg total taper |
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what type of feature is a tall lingual wall
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-resistance
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Type of removable provisional (1)
Types of fixed provisionals (5) |
-"flipper"
-polycarbonate -methyl/ethyl acrylic (bosworth) -bis-acrylic (composite) -lab processed -stainless steel |
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temp crown matrix buttons: advantages (4)
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-no prep time
-minimal contouring -predictable results -inexpensive |
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temp crown matrix buttons:
disadvantages |
-if tooth is damaged, must build up first
-can lock into matrix -inflexible. can lock into undercut -tricky for multiple units |
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what is eugonal?
what can it inhibit? |
-soothes tooth (if pulp chamber is entered, etc)
-can inhibit resin cements. Do not use together. |
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What are the 2 lines drawn on cast for custom tray fabrication
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3mm under free gingival margin -extent of wax cover
5mm under - extent of triad |
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Custom tray: steps (7)
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1. draw lines on cast
2. melt pink wax, cut at 3mm line 3. cut holes (not over die) for positive stops 4. layer w/ foil (open holes) 5. push triad through stop holes, then apply triad to 2nd line. Add handle 6. cure for 2 minutes 7. Remove, trim and place holes w/ #8 round bur |
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3 axis of mandibular movement and what plane do they occur in
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-horizontal: (hinging). sagittal plane
-vertical: (lateral movement). horizontal plane -sagittal axis: (lat movement) in frontal plane |
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Def: shear thinning/ thixotropic
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-how materials less viscous as they pass through a narrow aperture (syringe)
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Hydrophilic materials:
(2) |
-hydrocolloids (reversible or irreversible)
-polyether |
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Hydrophobic materials:
(3) |
-polysulfide
-polyvinyl siloxane -condensation-rxn silicones |
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what type of final impression material do we us at Pacific?
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-aquasil, viscostat?
-polyvinyl siloxane -hydrophobic (w/ added surfactant) -very stable, no biproduct |
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what material does polyvinyl siloxane not like, so we should not use together?
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-latex (gloves)
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what chemical can be scrubbed into sulcus to inhibit bleading?
what else can be done? |
-ferric sulfate
-cord. If 2 layers, 2nd layer is fatter cord. |
