Paint-on teeth whiteners are wonderful, economical products to prolong a white smile or do a touch-up. However, they do have some disadvantages. They are more difficult to use than they seem and require some drying time. They can be very difficult to use on the whole mouth, and trays or strips might be easier for the full set of teeth. This can be a drawback if you are trying to whiten an entire smile as quickly as possible, because you have to paint each individual tooth.
The effectiveness of paint-on teeth whiteners is not as strong as strips or trays. This can be because the bleaching agents are weaker, the paint-on product is easily dislodged, or the treatment cycle is not long enough to affect a drastic change. Paint-on teeth whiteners are the cheapest alternative for teeth whitening systems, but that’s because they are the most bothersome to use for the entire set of teeth and are not as effective. They are generally used for touch-ups or maintenance once someone has already had their smile professionally whitened at a dentist’s office.
There are side effects that can occur with the use of any tooth whitening system, and paint-on teeth whiteners are no different. The peroxide products can irritate the gums and cause tooth sensitivities. If the product is not used correctly, it might harm the enamel, so it’s important to follow the directions. Studies on these products say there is no potential harm to the enamel, but that’s if you are using it according to the directions. If you do experience side effects like gum or tooth pain, irritation, or sensitivity, and then you can stop the product usage and see if it subsides. For most people, the tooth sensitivity and gum irritation is temporary and stops after the product is discontinued.