"If you chose to replace any extracted or missing teeth, it is also important that you discuss
how you will do this with your dentist. Here are a few pointers:
* Implants are generally better than dental bridges because they are stand alone replacements that do not depend on adjacent teeth for support. The implant itself is made of metal. Pure titanium is biologically the best, although not ideal. A non metal ceramic implant would be ideal and will most likely be available in the future.
* The tooth or teeth that are attached to the implant(s) should be made of a combination of zirconium based porcelains for the foundation, and conventional porcelains on the exterior, because they will then be biologically safe, as strong as steel and extremely natural looking.
* Dental bridges are now considered to be a poorer choice over implants, because dental bridges must be attached to the adjacent teeth, usually with caps. If you choose a dental bridge, make sure it is made entirely of zirconium based porcelain and conventional porcelains, the same as for implant teeth.
* Never allow your dentist to use teeth with root canals for the supporting teeth on one or both ends of the bridge because these teeth, in as much as they are dead teeth, are relatively brittle and lack adequate strength. They will crack prematurely, causing the bridge to fail."