Are results seen immediately?
Depending on the color of your teeth, you should start to see results after a few days.

How often can I use the tray of over the counter whitening system?
Use it once a day for approximately 2-3 hours. Do not use for more than four hours at a time.


Will the whitening systems have any adverse effect on any of my existing dental work?
No. It will not effect any of your dental work. Keep in mind that any white fillings or crowns will not get whiter and they may need to be replaced by a dental professional to correct color.


Do I need to see my dental professional prior to using a OTC whitening system?
Yes. You should have a routine check up before using any whitening systems. Also, your gums chould be healthy.


Will I experience sensitivity when using whitening system?
You may experience slight sensitivity. If so, discontinue using for a few of days. If at that point the sensitivity continues, consult your dental professional.

Dr. Vocaturo describes the different types of whitening processes available.