Bleaching can cause a temporary increase in temperature, pressure and tooth touch sensitivity. The sensitivity lasts no longer than one to two days. In special cases these effects can persist up to a month. It is not common, but even if there were such a thing, there is a way to stop to exist, or fluorosis, or a special gel desensitization or toothpaste containing potassium nitrate special for sensitive teeth, either by administering an analgesic, formula Depon, immediately after bleaching