This article was a retrospective study of 175 patients/teeth with apparent successful endodontic therapy and persistent pain.
Patients files were reviewed 12-59 months post treatment to identify risk factors.
Treatment success defined as absence of clinical and radiographic signs of dental disease.
Prevalence of pain was 12% (21/175).
Significant factors associated with pain:
- Duration of pre-operative pain
- Pre-operative pain from tooth (greater than 3 months)
- Pre-operative tenderness to percussion
- Previous chronic pain
- History of painful treatment to orofacial region
- Female gender
- Type of treatment received less important (NSRCT vs. SRCT)
Identifies possible risk factors of patients who may experience PO pain. Even if therapy deemed successful.