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Teeth Whitening
All professional
bleaches
use 1 of 2 chemicals to whiten
teeth:
Carbamide
peroxide (used 4 plus
hours/overnight), or
Hydrogen
peroxide (used 1/2 hour twice a
day).
Professional Teeth Whitening bleaches thousand of people's teeth each month - compared to the 2 or 3 done in the average dental practice - and has sold the majority of professional bleaches dentist sell: Opalescence, Nite-White, Nupro-Gold, Day-White, Rembrandt and Perfecta. Although all professional bleaches use the same whitening chemicals, each vary in their success of whitening teeth and in degree of sensitivity
Products like Nite-White, Day-White, Nupro-Gold, Opalescence, and Rembrandt use the chemical glycerin as its base (Glycerin causes the solution to be thick instead of runny.) Glycerin dries out the pulp of your teeth and causes sensitivity in the teeth (This sensitivity is only temporary and ceases when product use is discontinued.). These companies use fluoride to re-hydrate the teeth caused by the glycerin, and potassium nitrate to soothe the nerves caused by the glycerin. This use of Fluoride slows down the whitening process.
Actual Process
Plaster working
model 
Reservoir for material
Vaccume Former Mechine 
Bleaching trey/material
Before
After
