OTC whitening systems are always weaker than any professional system. In professional systems you can choose between the in-office and home bleaching systems. Based on my professional experience I prefer and advocate for home bleaching. There are multiple reasons for that: it has less...
Generally speaking bleaching does not cause recession. However if you are a thin tissue type and the bleaching agent burns your gum and or if the bleaching trays push too hard on the tissue resulting is tissue death a slight amount of recession could occur. That being said...
The first step is to make an appontment with a dentist and have your teeth cleaned professionally. After the cleaning, see if the hygienist can polish the brown spots or stains out between the teeth. Assuming these spots are not cavities and the polshing is not enough to make...
