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Broken crown

User Level:
Posted by: Stage01  (10 years ago)

Dear everyone,

I had a root canal done on my upper left second molar two years ago. This tooth was originally crowned. The dentist had drilled through the crown to have the root canal job done. Nine months after the root canal, my crown chipped. The tooth did not bother me at all so I decided not to get a crown replacement. Five months ago, it chipped again while I was eating something sticky. Just yesterday, it chipped again with no apparent reason. I think the root canal procedure had weakened the crown. There is no pain and the tooth is not bothering me at all. Do I need to get a new crown? I was told that a new crown would cost $800. Please advise me!
User Level:
Posted by: mdhola  (10 years ago)
You are right that endo treatment can weaken tooth, however more importantly it can also weakens crown placed on tooth.

I am not sure which kind of material was used for the crown, however with porceline crown, chipping is observed more frequently as compare to gold crowns.

Furthermore, if your crown is just chipped off and not really broken, in other words if your whole tooth is covered with a layer of crown and just overlying porceline chipped off, then you might wait for some time (not definitive option though!).

If crown is really broken then i would advise to get it replace as it exposes your tooth to saliva and there will be more chances to get decay, or sipping of saliva through root canal and ultimate failure of root canal.

Furthermore, as endo treatment slightly weakens your tooth, they need reinforcement to hold entire tooth in order to prevent breakage of tooth. Crown definitely fulfill this purpose.

Visit your dentist to get definitive diagnosis and treatment options for you.