Which of the following endodontic failure may be retreated only with surgery:
a. Missed major canal.
b. Persistent interappointment pain.
c. Past and core. ***
d. Short canal filling.
What happens when an apicoectomy fails?
Apicoectomy risks
If the area does not heal or continues to cause pain, this is consistent with apicoectomy failure and is considered a poor outcome. If this occurs, the patient may need a second apicoectomy or the tooth may need to be extracted.
Can an old root canal be retreated?
Occasionally, infection returns and the root canal fails. In these circumstances, you may need a procedure called endodontic re-treatment. Endodontic re-treatment involves reopening your tooth to clean, sanitize, and reshape the chamber and canals in order to save your tooth.
What are the possible causes for failure of endodontic surgery?
One prospective clinical study (12) demonstrated that for 54 cases, the possible causes for treatment failure included the absence of a root-end filling, incorrect root-end preparation, a missed or leaking canal, and an unfilled isthmus area.
Which tooth has the most common RCT failure?
Moreover, according to tooth type, as presented in the past studies, most of the endodontic failures were noted in maxillary molars (44.4%), followed by mandibular molars (20%) and last, maxillary premolars (15.5%), whereas in the present study, a majority of the endodontic failures were marked in premolars.