In both cases a rubber dam is used to protect the gum tissue from the strong bleaching solution applied to the teeth. There is more rebound of color with this method so follow-up with home tray bleaching is recommended. The laser treatment is touted as the most effective. This activates the applied peroxide with light and heat speeding the breakup of stain molecules. It has good results on very stubborn discoloration and takes some extensive chair time and is costly.
Porcelain veneers are a proven excellent treatment to treat even the most discolored teeth.
The shape can be improved also. Often a combination of the above procedures may be appropriate depending on the nature and degree of discoloration. Consult with your dentist. Dr. Boyd has practiced family dentistry in Lancaster for over 14 years, with special emphasis on cosmetic dental treatment.