Differential diagnoses for persistent pain after root canal treatment: A study in the national dental practice-based research network

National Dental PBRN Collaborative Group

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

Introduction: Pain present 6 months after root canal treatment (RCT) may be of odontogenic or nonodontogenic origin. This is important because treatments and prognoses are different; therefore, the aim of this study was to provide specific diagnoses of patients reporting pain 6 months after receiving initial orthograde RCT. Methods: We enrolled patients from the Midwest region of an existing prospective observational study of pain after RCT. Pain at 6 months was defined as ≥ 1 day of pain and average pain intensity of at least 1 of 10 over the preceding month. An endodontist and an orofacial pain practitioner independently performed clinical evaluations, which included periapical and cone-beam computed tomographic radiographs, to determine diagnoses. Results: Thirty-eight of the 354 eligible patients in the geographic area (11%) met the pain criteria, with 19 (50%) consenting to be clinically evaluated. As the sole reason for pain, 7 patients (37%) were given odontogenic diagnoses (4 involving the RCT tooth and 3 involving an adjacent tooth). Eight patients (42%) were given nonodontogenic pain diagnoses (7 from referred temporomandibular disorder pain and 1 from persistent dentoalveolar pain disorder). Two patients (11%) had both odontogenic and nonodontogenic diagnoses, whereas 2 (11%) no longer fit the pain criteria at the time of the clinical evaluation. Conclusions: Patients reporting ''tooth'' pain 6 months after RCT had a nonodontogenic pain diagnosis accounting for some of this pain, with temporomandibular disorder being the most frequent nonodontogenic diagnosis. Dentists should have the necessary knowledge to differentiate between these diagnoses to adequately manage their patients.

Original languageEnglish (US)
Pages (from-to)457-463
Number of pages7
JournalJournal of endodontics
Volume41
Issue number4
DOIs
StatePublished - 2015

Keywords

  • Chronic
  • Diagnosis
  • Pain
  • Root canal treatment
  • Temporomandibular disorders
  • Tooth

ASJC Scopus subject areas

  • Dentistry(all)

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