Exam (elaborations)
Restorative 1 Quiz
Exam of 12 pages for the course NUR 321 - problems with excretion - renal system p at NUR 321 - problems with excretion - renal system p (Restorative 1 Quiz)
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Restorative 1 QuizA common example of etch, prime, bond? - ANS-L-pop, once light cured it stops the
action of etching
Adapting occlusal form is best accomplished how? - ANS-Using a conical (cone
shaped) condenser
All composite restorative materials tend to do what? - ANS-Shrink slightly as they set up
Antagonist? - ANS-Tooth/teeth in the opposite arch with which a specific tooth in one
occludes (opposing tooth)
Any small grooves that appear to extend into the prepped area of the tooth should be
what? - ANS-Should be carefully carved into the amalgam, or these areas may be
hyperocclusion
As the restoration shrinks due to cold, what happens? - ANS-Margins of the restoration
pull away from the walls of the prep, allowing microleakage
Bases usually are composed of? - ANS-Zinc oxide/eugenol of glass ionomer; ZOE has
a sedative effect on dentinal fibrils; glass ionomer releases fluoride; may prevent
secondary decay
Can the prep be overfilled? - ANS-Yes and physical pressure placed against the
material as it sets; may force the material to adapt to margins
Carving is accomplished in what? - ANS-Pulling strokes to shave away small layers of
amalgam; don't use pushing strokes
Cavity varnish is usually composed of what? - ANS-Sap of the tropical copal tree
dissolved in acetone
Cavity varnish many prevent irritants from touching what? - ANS-Dentinal fibrils or
traveling down the tubules toward the pulp
Cavity varnish may help seal interface between? - ANS-Amalgam and the prep &
prevent microleakage
, Cavity varnish may prevent staining of what tooth surface from components of
amalgam? - ANS-Dentin
Centric uses what color paper? - ANS-Blue first
Cold does what to blood vessels? - ANS-Constricts them which slows the flow of blood
and can also reduce post-surgical swelling - first 24 hours
Composite placed over the bonding agent will do what? - ANS-Adhere to the oxygen
inhibited layer on the surface of the bonding agent
Composite restorations tent to expand more than enamel and dentin when? -
ANS-When they are warmed and contract more than enamel and dentin when they are
cooled
Composite tends to stick to what? - ANS-Condensers and pull away from the prep;
wetting condenser with bonding agent can prevent this
Concentration cell corrosion is caused by? - ANS-Galvanic currents, not painful, step 1-
reaction, step 2- gamma II phase, step 3- failure to polish
Concentration cell corrosion? - ANS-Destruction of amalgam from internal galvanism
that occurs when two different electrolytes generate electrical currents
Condensation of amalgam that is several minutes old prevents mercury what? -
ANS-Being forced to the surface of the mix during condensation; 3 minutes is the cut-off
(discard after 3 mins)
Corrosion can be caused by? - ANS-Galvanism
Delayed condensation does what two things? - ANS-Creates a weak restoration and
fractures metal crystals that are forming in the mix
Direct the curing light where? - ANS-Over the bonding agent for the time specified by
the manufacturer
Do you completely fill the crown with cement? - ANS-Yes, this process fills voids
between the crown and the prep and aids in retention
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