Re: Cavity in tooth with root canal?
A root canal removes the nerve from the tooth, but the tooth structure above the gums is still prone to decay just like any other tooth. One possible way to get a cavity on a tooth with a crown is underneath the margin or edge of the crown. A thorough dental examination can catch these cavities by feeling the "catch" under the crown. Once decay gets started there, it is very difficult to clean out and fill. Usually the crown has to be removed and the cavity taken care of. Since crowns are cast to exactly fit the tooth when they're made, any changes in the shape of the tooth will cause the crown to not fit - that is if the dentist could get the crown off in one piece in the first place. BTW, I'm not a dentist but have worked in the field for over 25 years (assistant).
Last edited by soliloquy; 02-29-2004 at 02:13 PM.