Tooth Whitening Flashcards
Extrinsic staining examples
Iron supplements
Smoking
CHX
Tea/coffee/red wine
Chromogenic bacteria (kids)
Intrinsic staining examples
Fluorosis
Tetracycline
CF
AM/root filling materials
Thalassemia
Non vitality (blood products)
Active agent in vital external bleaching
Hydrogen peroxide
Components of vital bleach
Urea
F
Calcium Phosphate
Carbopol
Carbamide peroxide
Factors affecting bleaching outcome
Time
Cleanliness of tooth
Conc of solution
Temp
Warnings to give a patient for external bleaching
Sensitivity
Relapse
Might not work
Gingival irritation
What is the max % of hydrogen peroxide
6%
Lab card request for home bleaching trays
Please pour up alginate imps in 50:50 dental stone: plaster
Please provide 0.5mm thick soft acrylic vacuum formed splint
Stop 1mm short of gingival margin
Buccal spacer to allow for placement of gel
Review at 1wk
Results for home vital bleaching
3 days
Max result by 3-4wks
Potential bleaching issues
Wears off
Gingival irritation
HCL acid caustic
Issues with bonding
Sensitivity
When can restorative tx be completed
2 weeks after
What is resin infiltration?
When we do not remove the surface layer
Infiltrate the white area with resin
Changes refractive index of the white area
Indications: white spot lesions
Why does a dead pulp cause colour changes?
Bleeds into dentine
Blood products diffuse + darken
