I have three teeth that were bonded and have darkened. How can I get them white again?
Elisa Mello (New York, NY) on Dec 21, 2011
The only option for whitening a darkened bonding is to replace it. Composite bonding materials absorb stains and can darken over time. They will require replacement in highly visible areas of the month as they darken. Some of the newer composite materials stain less than the previous generation of composites.
Michael Apa (New York, NY) on Dec 21, 2011
Bonding is not a great material. We like to replace the bonding with either porcelain veneers or addition ceramics (porcelain chips). The material is much stronger and the color more stable. Even if you have the bonding polished, it will most likely darken again.
Christopher Baer (Aurora, CO) on Dec 21, 2011
It depends on the underlying cause of the "darkness" This could be from a hemostatic(blood clotting) agent used during the cementation process of the teeth. It could be because the teeth are dead, or it could even be because the bonding is old and has accumulated stain. I would recommend seeing a dentist to determine the actual cause.
LaSaundra Estelle (New York, NY) on Dec 21, 2011
This is a difficult to answer without having a picture to determine the extent of the bonding (how much of the tooth was actually bonded) and if it is the margins of the bonding that are darkened versus the tooth itself that has darkened. If this bonding has been replaced/repaired several times - I would either do a Veneer(Laminate) or full coverage via a Crown. These restoration options give a definitive color that will not change color over time.
Amanda Seay (Mount Pleasant, SC) on Dec 21, 2011
Bonding is resin material that can collect stains from things such as coffee, tea, red wine, red sauces, mustards, etc. Sometimes you can polish and buff the stains off if they are superficial. However, because bonding is somewhat porous, the stains will sometimes be absorbed by the bonding and cannot be removed. Your bonding would need to be redone in those cases where the stain cannot be removed. Most of the newer generation of bonding materials have excellent properties that enable it to be color stable as long as the dentist finishes with a smooth polish.
Leonard Tau (Philadelphia, PA) on Dec 21, 2011
Simple answer is to have them rebonded again. A more permanent result may be to have them veneered or crowned. Consult a local dentist to see what your options are.