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t/f composite shrinks towards the light (its drawn to it like brittany!)

FALSE! its not good to be drawn to the light it shrinks toward the CENTER!
how do you get less polymerization shrinkage?

smaller increments
what willl larger increments of composite cause?
- leakage or post insertion sensitivity
- Biting discomfort
Greater resin content=

greater shrinkage
t/f if you have greater resin content in your composite you will have less shrinkage

False! GREATER SHRINKAGE
greater filler content= ______ the CTE

lower
the greater the resin content= _____ cte

greater
t/f when taking a shade you want a dry tooth for a best match

false...MOIST TOOTH
when should you take a shade?

BEFORE isolation w/rubber dam or cotton roll
______ of the tooth is closest to the dentin color?

CERVICAL
if no contamination occurs how do the layers of composite bond to each other?

CHEMICALLY
t/f you must bond in between each layer for them to stick together

false! bond to each other CHEMICALLY if no contamination occurs
light cure composites should be in ______ compules or syringes

OPAQUE
___ mm increments should be placed at maximum for composite?

2mm
resin to resin bonding is what type of bond?

CHEMICAL
dentin should be ____ when bonded to resin

MOIST baby you know it!
t/f you can use alcohol to wet the composite instruement to help so the composite does not stick

False! Do NOT do it! YA HEAR ME! DON'T DO IT! or ELSE!
what must be done to the composite to prevent sticking?

refrigerate
liners and bases with _____ should not be used because it inhibits the set of resin

EUGENOL
why shouldn't liners and bases with eugenol be used?

inhibits the set of resin
what is the most popular light curing unit?

LED (light emitting diode)
how often should the light be checked?

MONTHLY, just like our monthly curse when you bleed you check that light! (unless you never bleed then you better figure out a better way to remember to check that light)
t/f the lights cause retina damage so you should wear eye protection

true! so don't be brittany and stare at the pretty blue light
t/f the light and the composite emit heat and can cause pulp damage

TRUEE
What does the operatory light do to the composite?

premature set of composite
what type of restorative material is FLUORIDE RELEASING?

glass ionomers
t/f you must bond when placing a glass ionmers

FALSE bond to tooth WITHOUT additional bonding agent
glass ionomers are _____ _____ binding and maintain a better seal than composite

calcium ion
t/f glass ionomers are fluoride containing but not fluoride releasing

FALSE! don't believe it! glass ionomers ARE fluoride releasing!
should you use a glass ionomer in a high stress bearing area?

NO!
what are 5 uses of glass ionomers?
- luting CEMENT
- RESTORATIVE material
- SEALANTS
- LINERS AND BASES
- lamination or sandwich technique
in what four was are glass ionomers used as restorative materials?
- root caries
- non carious cervical lesion
- anterior class III
- core build up with tooth support
with a hybrid ionomer what is added to improve physical properties?

HEMA (hydroxylethyl methacrylate) say that ten times fast I dare you!
t/f a hybrid ionomer is fluoride releasing

TRUE
t/f hyprid ionomers are used in permanent teeth because the excessive wear is not a problem

false, PRIMARY TEETH!
what type of bonding agent should you use with glass ionomers?

10% polyacrylic acid
t/f when using a glass ionomer you should use phosphoric acid as your bonding agent

false! thats a no no! use 10% polyacrylic acid for 10 seconds to the dentin. GOT IT!?!
what is fluoride containing but is NOT fluoride releasing?

compomers
compomers are composite resins modified with ______

polyacid

Author

cassiedh

74881

Card Set

Dental Materials

Description

blah blah blah

Updated

2011-03-24T02:36:32Z

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