Here's the rundown on effectiveness
1- whitening toothpastes:close to useless
2- white strips, nite white: some people get decent results, others not as good, generally not quite what the ads would have you believe. Brown and yellow shades bleach much better than gray shades. The whitestrips won't stripe your teeth-however teeth are more opaque at the gumline and this can lead to a 'striped' appearance, this would also occur with tray based systems.
3. Tray based gels- what you get in most offices, this works well for almost everyone and your dentist should give you a fair assessment if you have hard to bleach coloration.
4. Office based whitening- strongest bleach available. These can be chemically, heat, light or laser activated. The 'special laser' is purely marketing as the other systems work just as well. Don't pay extra for it.
5. I charge 425 for trays (relatively low).
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