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