Purpose: to evaluate the 10-year survival rate of root canal–treated teeth at this specialist clinic. and to identify possible preoperative, intra-operative, or postoperative prognostic factors associated with the outcome survival in this study.
• 330 patients with 420 teeth examined and treated at least 10 years previously and tooth survival was recorded by examine the records and by contacting referring dentists and patients.
•Inclusion criteria : patients were included into the study if they had at least 1 tooth treated at the clinic.
•Exclusion Criteria : who after examination were recommended for extraction of the tooth involved, and patients who needed further referral but no endodontic treatment.
•One researcher examined all included patient’s dental records and transferred preoperative, intraoperative, and postoperative registrations into an Excel data sheet
•23 dentists that provided the treatments in this study and were all specialists, under specialist training, or general dentists with particular interest and skill in endodontics.
Most highlighted Results :
-10-year survival rate was 81.5%
–Age and placement of a crown postoperatively were factors found to have a statistically significant influence on survival rate
-Teeth that received a crown after treatment at this specialist clinic had an estimated 10-year survival rate of 91.3% compared with teeth not restored with a crown 76% thus, it was significantly lower.
-Tooth loos during 10 years for teeth in patients <50 years old is significantly lower than patients above 50 years old §73 teeth (17.4%) in 69 patients had been extracted during the 10-year follow-up period. The reason for extraction was related to endodontic diagnoses in only 5 of these cases (6.8%). The majority of extractions were carried out because of root fracture (35.6%) and caries (21.9%)
-Clinical significance :
Placement of permanent restoration after RCT is advisable in order to improve the survival rate of tooth