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Rapid chairside microbial detection predicts endodontic treatment outcome

Research output: Contribution to journalArticlepeer-review

Original languageEnglish
Article number2086
Pages (from-to)1-10
Number of pages10
JournalJournal of Clinical Medicine
Issue number7
Early online date3 Jul 2020
E-pub ahead of print3 Jul 2020
PublishedJul 2020

Bibliographical note

Publisher Copyright: © 2020 by the authors.


  • jcm-09-02086

    jcm_09_02086.pdf, 802 KB, application/pdf

    Uploaded date:05 Jul 2020

King's Authors


Background. The aim of this longitudinal, one-year cohort study was to explore the hypothesis that fluorescence sampling of the root canal space prior to obturation could predict the outcome of root canal treatment (RCT). Methods. Sixty-five teeth underwent primary RCT and were followed up clinically and radiographically. The outcome was determined radiographically with periapical radiographs (PR) and cone beam computed tomography (CBCT) scans. Results. Success at 12 months was predictable based on the fluorescence score. When the fluorescence score (defined as the percentage of signal over total signal including background) was lower than 67, there was a 4.5 times (Odds ratio (OR) = 0.028; 95% confidence interval (CI): 0.003, 0.291, p = 0.001) greater chance of success (90% overall). When the readings were above this threshold, the success rate was 20%. Conclusion. A chairside sampling method is able to predict the outcome of RCT, through the use of paper point sampling and fluorescence staining. This has reduced the prevalence of persistent infections by guiding the optimum time for obturation. trial NCT03660163.

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