Can one get a cavity on a tooth that has a root canal? I always believed it is not possible, but my new dentist says it is, and he is selling me a more expensive crown based on that. He says that this precious metal would help preventing cavities...
Unless this is a front tooth (in which case you can get away with just a filling at times), I would strongly suggest a crown. This will prevent your tooth from splitting or cracking (that would lead most likely to an extraction)Gold crowns are supposed to be the most durable. I have had very good luck with my porcelain fused to gold crowns and recommend them. Good luck
Gold is a weak metal. You can get pure gold crowns and/or gold plated crowns. A porcelain fused to high noble metal crown is the best crown and one that tends to last much longer than gold crowns. Porcelain fused to high noble metal crowns also will match your other teeth. They look like a natural tooth.
You can get cavities on teeth that have had a root canal. If you choose to have a crown placed on the tooth, you will need to maintain a really good oral hygiene routine. Anything artificial in the mouth, such as a crown, is a natural plaque trap.
amazingly enough i have had 2 porcelain fused to regular metal crowns in my front teeth for over 20 years and never had any cavities on them. it is many of the other teeth that are getting the cavities bigger and bigger. thank you every one for your input.