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There may be several things going on with the crown. First of all, the tooth may have been irreparably fractured before treatment even began. These fractures sometimes can't be seen, but the consequences may be obvious later on with pain. Second, if the fracture had initially involved the pulp (nerve), a root canal may have been necessary before the crown was placed. If not, the pulp can take only so much trauma, and the additional stress of a crown preparation may have allowed an already irreversibly involved pulp to die, leading to pain. The pain on chewing may be due to the effects of a fracture that can't be corrected, and the only recourse may be extraction. On the other hand, the tooth may only need a root canal. The crown should have physiologically normal contours, contacts with adjacent teeth, and proper occlusion. It should be flossed and brushed daily as are the other teeth, and should feel like one of your normal teeth. Good luck with your crown.
Chuck Wakefield, DDS
Director, Advanced Ed. in General Dentistry Clinic
Associate Professor, General Dentistry
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