Posts Tagged ‘Maryland Bridge’

Does a Maryland Bridge have any mercury in it?

Friday, September 30th, 2011

My wife has maryland bridges and they where installed in 1992. My ? is does the metal used to retain the false tooth could have mercury?
- Edwin in Puerto Rico

Edwin,
No, there is no mercury in a Maryland Bridge.

A Maryland Bridge, for the benefit of those who may not know, is an affordable dental bridge that is made simply of a false tooth attached to two metal wings. The wings are etched so that their inner surface is microscopically porous and they can be bonded to the teeth with a luting composite. The cost would be less than half the cost of a conventional porcelain-fused-to-metal bridge.

Los Angeles Maryland Bridge

Here is a photograph of a Maryland Bridge on a plaster model, courtesy of Newton Dental Lab in Massachusetts. The metal in the framework can be made out of a non-precious alloy or a semi-precious alloy. Non-precious alloys can provoke sensitivity reactions in some people, because they contain nickel, and some of them contain beryllium. So these could be issues. If you have metal sensitivities, I would advise sharing that with your dentist and avoiding these base metal alloys in your bridge.

But the principal problem with a Maryland Bridge is that the metal blocks the translucency of the teeth it is attached to, and so it will make them a little more gray. It’s not a pronounced effect, but a subtle effect. In the photograph we show here, where it is bonded to the insides of lower back teeth, that would not be an issue, but for front teeth it would be.

This blog sponsored by Los Angeles mercury-free dentist Dr. Robert Thein.