Amalgam Flashcards
(42 cards)
How many lingual pits preparation shapes are there
3 an oval, circle, triangle
What are the 1st 3 steps for placing amalgam restorations
Mixing, placing, and condensing
What are the Advantages to using composite material in posterior teeth
Esthetics and marginal integrity
After removing the band from a class ll prep with composite. What do you do next.
Cure the buccal and lingual surfaces to make sure it has hardened (polymerization)
What’s the proper matrix technique for restoring a posterior prep with composite
Prewedge, dead soft metal band/tofflemire holder
Wedge, ring matrix system(garrison)
What is part of the correct placement of composite while filling the prep.
Place and cure increments of no more than 2mm at a time
Anatomy can be placed in a completed posterior composite, with which rotary instrument
Finishing diamond burs & multi fluted carbide finishing burs
The finishing process should correct what on a composite filling
Flash
Post op sensitivity experienced after a composite posterior restoration is a result of what.
Premature occlusion
Etch was not rinsed correctly
Saliva contamination
What bur should be used to define central grooves on posterior composite.
Tapered shape finishing bur
What is the photochemical initiator in composite that causes it to harden
BIS-GMA(Resin)
How will the tooth shade appear if the shade is chosen while the tooth is isolated
Lighter in color than the tooth structure
What is the function of pit and fissure sealants.
Acts as a barrier to prevent caries.
What is the most common reason for sealant failure
Saliva contamination
When using partially filled sealant material. The efda has to consider what.
Occlusal adjustment
What is the 1st step in the placement of a pit and fissure sealant
Flour of pumice to smooth the surface.
If saliva contamination occurs after etching but before sealant placement. What should you do.
The enamel must be re-etched
Coronal polishing involves removing what
Supragingival extrinsic strain from the clinical crown
Does bevelse need to be placed on the occlusal surface for increased retention?
No
What is the hardest tissue in the body and is very brittle
Enamel
What purposes does contact areas serve. (Teeth touching)
Keeps food from packing between the teeth and to help stabilize the dental arches
What area does the anatomical crown of tooth consist of
The portion that extends from the incisal or occlusal surface to the enamel junction with the cementum of the root
What area of the tooth does the clinical crown consist of
The visible portion of the anatomical crown from the occlusal or incisal to the Crest of the soft tissue. (Gingiva)
What class restoration needs a tofflemire and band.
Class ll
