I have never had "laser" whitening. I use the whitening gel by Dr. Collins, and I maintain my white teeth with Dr. Collins "All White" toothpaste. I got it as a freebie when I ordered the gel a long time ago, and fell in love with it. I drink alot of coffee and tea, this works well for me. My teeth are super white :)
Hope this helps!
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Posted to Tips to maintain teeth whitening results? on 9 Jun 2008