I work in a dental office that performs Zoom whitening. First and foremost I warn patients of all the possible side affects. Yes, the bleach can seep through the barrier and cause burning of the tissues. I also warn patients that they may feel a "thumping" in their teeth, possibly for a few days. I often test our products on myself so that I can better explain to our patients the possible side affects. I also often perform the procedures on our office staff and my daughter. We have had only one patient complain about swollen lips. All bleaching materials and procedures cause some blanching, burning, sores, reddness and discomfort of the gum tissue. As with any cosmetic procedure there are always side affects and you should be completely informed by Dr. or the office staff.
Zoom recommends 4 cycles of 15minutes under the light. In my opinion I feel that this is sometimes to long and often use the light for 2 cycles.
I always offer to have the patient return in 2 weeks to perform the last 2 cycles. I also start out with the lowest consentration of bleach and I do not place the light right up to the mouth. I often leave some space between the mouth and the light. I do not recommend doing any at home tray bleaching. I have had some wonderful results and very satisfied patients. I will not perform bleaching on a patient that I do not feel that I can get their teeth at least 5 to 6 shades lighter. I have always been honest with patients during their consult and have turned patients away. At our office we are only interested in great results and not money. If we can't get you great results we tell them, "unfortunately laser bleaching will not get you the results you are looking for and we won't have you waste your time or money." Often the color of our teeth is internal not external. Internal coloring can not be bleached!!!!
To all of you who are considering Zoom keep a few things in mind. One, make sure your discoloration is external. (internal coloring will usually be more of a gray shade or a deep yellow coloring....this usually is due to medication or age) Two, make sure that when having the bleaching that the person has placed a gauze covering over your lips before they place the lip retractors. Three, ask what their office policy is if your results are not at least 5 to 6 shades lighter. In our office we have never had anyone have to ask for their money back due to the fact that we are always honest about how many shades we "think" we may be able to get them. Four, no matter how thick the barrier is on your gums there is always the chance that the material will seep through and cause discomfort. Though in my experiece I haven't had anyone had discomfort for more than a day or two and I've never had anyone had their gums turn black. Ask your dentist to do what I do......cover all exposed tissue.
As far as after you've had any bleaching.....I recommed several different things. I explain to the patient that after the bleaching session that their teeth will be more susceptible to stains for about a week so please be more careful about what your eat or drink. Keeping your teeth white........a good whitening tooth paste.....avoid drinking coffee, tea, colas without a straw. These drinks have a natural dye and will stain more easily than any foods. If you don't want to use a straw always have a glass a water with your drink.
Whitening can be a safe procedure but will cause some discomfort. Ask to be informed of all possible side effects!