hello and welcome to hcm forum,
i would be glad to inform you that if the infection around the concerned tooth is not too widespread, then a post & core followed by a crown can be placed over your tooth. In such cases, RCT may be redone, therefore i advise you to see an Endodontist before getting the tooth extracted.
I don't get, why your dentist
did not prescribe you a crown years ago following the root canal treatment
, to avoid the crown of the tooth from fracturing.
I cannot assure or provide you with the treatment until, oral cavity is thoroughly checked.
therefore, i recommend you to take a second opinion
i hope i answered your query
i wish you good health.