My recommendation remains the same-- you will need to consult with an endodontist. Regardless of whether you were told at the outset that "this tooth was a healthy tooth", the fact that you're currently in pain is good evidence that it is not healthy. Continuing with the bridge as if the tooth is healthy is not an option, because infection will not allow you to properly chew on the bridge, and the tooth will ultimately fail.
When a tooth has been determined to be infected, you only have 3 rational choices:
1-- perform root canal therapy
if it is feasible to implement it successfully
2-- perform apicoectomy, which is an alternative procedure to eliminate infection, or
3-- extract the tooth.
It makes the most case to consult with an endodontist to determine whether your tooth and the new bridge can be salvaged. To find an endodontist, you may refer to the online directory of the American Association of Endodontists
If the tooth is ultimately determined to be unsalvageable, your dentist will need to arrange for some alternative prosthetic treatment strategy, which may include either another fixed bridge of different design (for example, substituting a different tooth as an abutment for the bridge), or an implant supported prosthetic device, or a partial denture
. If the current bridge cannot be used, your dentist will obviously need to apply any fees you have already paid to the alternative treatment, because a failure to complete what was started would logically be due to some error in either treatment planning or treatment execution, and he must bear responsibility for that failure.
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