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39 Cards in this Set
- Front
- Back
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What is used for clean tissue management of subgingival margins?
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Retraction Cord
Electrosurgury Laser Astringents (viscostat, Hemodent, Hemodette) |
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What is used for clean tissue management of supragingival margins?
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Astringents (minimize bleeding points and gingival fluid)
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What are astringements used for?
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Both subgingival and supragingival margins.
Minimize bleeding points and gingival fluid. |
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What are some problems with stock trays?
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Cannot Confine and Control
No Tissue Stops Possible |
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When should you fabricate custom trays?
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Multiple units
When No posterior stop on unprepared tooth structure |
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What considerations should you contemplate when using Triple Trays?
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Single units
Must have rigid, fast-setting material to form tray for wash Less information = more error |
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What are the most commonly used Final impression materials?
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PVS & Polyether
(historic: Gypsum, Rubber base, Zinc Oxide, Alginate) |
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What are the general properties of PVS?
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Stable
Fast Better Taste |
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What are the general properties of Polyether?
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Stable
Longer Set Objectionable taste |
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What is the Chroma of something?
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Chroma = Amount (saturation) of color
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What is the Hue of something?
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Hue = Color
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What is the Value of something?
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Whiteness
Light/Dark |
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How do you increase the value of something?
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Value can be increased by the addition of light or white
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What does the following do to the value?
Inadequate reduction Excessive opaque layer Hypersmooth texture Inadequate facial anatomy |
Increases the Value
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What does the following do to the value of something?
Excessive translucency Inadequate opaque layer Dark core under translucent restoration Excessive facial anatomy |
Decreases Value
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What are four commonly used cements?
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Zinc Phosphate
Resin Ionomer Glass Ionomer Resin |
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Which cement has a long set and is exothermic, water soluble over time, technique sensitive
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Zinc Phosphate
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Which cement has fluoride release, not water soluble, easy cleanup, and is less technique sensitive?
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Resin ionomers
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Which cement is water soluble, more forgiving of environment, and has HIGH fluoride release?
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Glass Ionomers
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Which cement is extremely technique sensitive, has high bond strength, multiple steps, and isolation is critical?
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Resin
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What are the two key factors in final adjustment?
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Fit and Polish
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What properties are desireable when determining the fit?
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Passive
Adequate Contact Appropriate Tissue Contact Anesthetic |
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What features should you look for when evaluating the polish?
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Matched texture
Never use course diamonds Rubber wheels, cups, discs |
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What should you check when verifying and confirming the seat of a restoration?
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Proximal contacts
Marginal integrity Axial contour Occlusion |
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What should be accomplished when trying in the restoration?
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Isolate field & control fluids
Application of Throat Pack Patient Position Familiarize yourself with the path of insertion and removal Verify and confirm the seat |
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What are some potential problems associated with improper cementation?
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Premature occlusion
Pulpitis Lack of Retention Fractures of abutment or restoration Recurrent Caries |
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When should you attempt to remove the excess cement?
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Allow the cement to reach a final set prior to attempting to clean away any excess
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T/F
Appropriate and adequate seating force is crucial to ensure a complete seat when cementing a restoration. |
True
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What types of cement are used for provisionals?
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Zinc oxide Eugenol
Zinc oxide Non-Eugenol |
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What steps should you take prior to cementation?
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Isolate the field
Verify path of insertion Complete ALL polishing BEFORE cementation Ensure that abutment is clean (prep scrub & Oil-free pumice) |
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What are the KEYS to Cementation Success?
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Complete removal of excess material is vital to soft tissue rebound
Positive Seat |
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What can you use to clean the excess cement once it has reached a final set?
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Explorer or scaler
Knotted floss through interproximal pontic region |
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Acid etch and bonding agen are added to the _____.
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Abutment
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Primer, catalyst, air abrasion is accomplished on the ______.
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Restoration
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How should you mix the cement?
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Mix material according to manufacturer's directions on the appropriate mixing pad
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A thin layer of cement should be applied to the _______ surface or the ______ with the _____
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A thin layer of cement should be applied to the INTAGLIO surface or the RESTORATION with the CEMENT SPATULA
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How should you mix cement?
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USE MANUFACTURERS GUIDELINES
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What is the primary source of retention?
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The parallelism of the walls
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T/F
a thin layer of cement provides retention |
True
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