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32 Cards in this Set

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color of teeth is based on?
thickness of enamel layer
genetic predisposition
why do teeth naturally farken ?
deposition of secondary dentin w/ continued trauma to tooth
course of treatment for whitening
cause of discoloration
access extent of stain
decide on restorations or whitening procedures
blood from chamber can be extravasated in trauma or treatment and BREAKDOWN OF HEMOGOBIN DARKENS TOOTH
intrinsic stain: non vital tooth
what does tetracycline do?
reacts with the ca+ ions in hydroxyapatite and becomes part of lattice work of enamel and bone
white spots
mild fluorosis
brown spots (colorado brown stain)
sever flourosis
malformed dentin wiht bad staining, weak, easily broken teeth
deninogenesis imperfecta
improper enamel formation w/ dark, easily broken and decayed teeth
amelogenesis imperfecta
caused by diet, can be reduced with good OH and some can be dealt with at home, most can be removed at prophy appt
extrinsic stain
what concentration should be used for hydrogen peroxide ?
5-35%
what does hydrogen peroxide break down into?
water and an oxygen free radical which attacks staining pigments and removes them
what is nubmer one side effect of any bleaching procedure
reversible pulpitis
what does carbamide peroxide break down into?
hydrogen peroxide
what does carbopol do?
thickening agent that keeps whitener on teeth longer
what concentration should carbamide peroxide be used
10-20% (3-5 H2O2)
Colgate, platinum, rembrandt, and others are what whitening agent?
carbamide peroxide
weak oxidizing agent thats mixed with hydrogen peroxide used on non-vital teeth
sodium perborate
done following completion of RCT in teeth that arent going to be restored with full coverage (usually anterior teeth)
non vital bleaching technique
use of much stronger oxidizing agent and can be done in office with heat or light or as walking bleach
techniques: non vital bleaching
"power bleaching" done with high conc of H2O2
and MUST protect tissues and NOT anesthesize teeth
in office vital bleaching
what is used to activate bleach in in office vital bleaching
argon or c02 laser
what is the quickest method to whiten and is especially effective on dark stains?
in office vital bleaching
h2o2 or carbamide products placed in professionally made tray at home for 30 min per treatment
at home-DDS supplied
same as crest whitestrips
at home -DDS Supplied technique
dentrifices that have more abrasive particels or a mild peroxide agent
whitening paste techniques
these are best used to MAINTAIN results of whitening. not in changing shades
whitening pastes
two big problems of whitening:
cold sensitivity
gingival irritation
what can aid in reducing the problems of tooth whitening?
use of desensitizing paste (sensodyne) prior to whitening/bleaching
-proper use helps as well
what are whitening contraindications? (where not to bleach) 4
-anterior restorations (wont change color of rest)
-light sensitivities ( melanoma, cancer therapies)
-no nonvital bleaching on extensively restored teeth
-amalgam stained teethq
custom trays made to carry bleach or fluoride to teeth while protecting soft tissues
medicament trays
what are medicament trays used for
esthetics, high caries incidence,and cancer pts