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TCDHA DENTAL MATERIA LS
TEST 3 | QUESTIONS AND
CORRECT ANSWER S | LATEST
UPDATE
Question : Self-curing is a process whereby a chemical
reaction occurs when 2 resins, a base with chemical activators and a catalyst, are mixed together?
CORRECT ANSWER : True
Question : Moisture contamination contributes to
ineffective bonding?
CORRECT ANSWER: True
Question : Enamel bonding is stronger than dentin
bonding?
CORRECT ANSWER : True
Question : Composite resins light cured in large
increments can contribute to hypersensitivity?
CORRECT ANSWER : True
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Question : The primer is applied following the bonding
resin?
CORRECT ANSWER : False, it happens before
Question : The smear layer is composed of cut tooth
debris, bacterial plaque, and bodily which interferes with the formation of bond to the pulp?
CORRECT ANSWER : False
Question : What is the name of the acid commonly used
to etch tooth structure?
CORRECT ANSWER : phosphoric acid
Question : How is bonding to enamel achieved?
CORRECT ANSWER : requires only a low viscosity
liquid resin monomer that will penetrate into the spaces on and between enamel rods created by acid etching
Question : What causes dentin sensitivity?
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CORRECT ANSWER : over etched dentin
Question : How is dentin bonding best achieved?
CORRECT ANSWER : Adhesion occurs by removal of
smear layer and formation of micro tags within intertubular dentin
Question : glazing phase?
CORRECT ANSWER : (baking) 2nd step, completed
after final contouring of crown.
Question : sintering phase?
CORRECT ANSWER: (contouring) 1st step, heat
ceramic particles to melting poing then fuse to adjacent particles at boarders.
Question : As a dental hygienist how would you describe
a veneer to your client?
CORRECT ANSWER : Thin layers of esthetic materials
that are bonded to the anterior portion of the mouth.
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Question : Ceramics appear similar to natural teeth
because they are fluorescent?
CORRECT ANSWER : False
Question : Ceramics appear opalescent, that is, they emit
light in the visible wave spectrum when ultraviolet light hits them?
CORRECT ANSWER : False
Question : The more aesthetic the ceramic is, the more
polycrystalline particles are found in it?
CORRECT ANSWER : False, its glass particles
Question : Computer-Assisted Machining does not
require dies or temporary crowns allowing the dentist to prepare and deliver the restoration in the same process?