Treatment outcome in endodontics: the Toronto study--phases 3 and 4: orthograde retreatment.

@article{Chevigny2004TreatmentOI,
  title={Treatment outcome in endodontics: the Toronto study--phases 3 and 4: orthograde retreatment.},
  author={Cristian de Chevigny and Thuan T. T. Dao and Bettina Ruth Basrani and Vincent Marquis and Mahsa Farzaneh and Sarah Abitbol and Shimon Friedman},
  journal={Journal of endodontics},
  year={2004},
  volume={34 2},
  pages={
          131-7
        }
}
Outcome 4-6 years after retreatment was assessed for Phases 3 and 4 of the Toronto Study. Of 477 teeth retreated, 333 were lost to follow-up, 18 were extracted, and 126 (41% recall, excluding 124 discontinuers) were examined for outcome of healed (periapical index score, < or = 2; no signs or symptoms) or diseased. When pooled with Phases 1 and 2, 187 of 229 teeth (82%) were healed. Logistic regression identified significant (P < or = .05) preoperative outcome predictors: root filling quality… CONTINUE READING

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