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This study evaluated the one-year clinical performance of a one-step, self-etch adhesive (Optibond All-in-One, Kerr, CA, USA) combined with a composite (Herculite XRV Ultra, Kerr Hawe, CA, USA) to restore NCCLs with or without prior acid etching. Restorations performed by the same practitioner were evaluated at baseline and after 3, 6, and 12 months using modified USPHS criteria. At 6 months, the recall rate was 100%. The retention rate was 84.2% for restorations with prior acid etching, but statistically significant differences were observed between baseline and 6 months. Without acid etching, the retention rate was 77%, and no statistically significant difference was noted between 3 and 6 months. Marginal integrity (93.7% with and 87.7% without acid etching) and discoloration (95.3% with and 92.9% without acid etching) were scored as Alpha or Bravo, with better results after acid etching. After one year, the recall rate was 58.06%. Loss of pulp vitality, postoperative sensitivity, or secondary caries were not observed. After one year retention rate was of 90.6% and 76.9% with and without acid conditioning. Optibond All-in-One performs at a satisfactory clinical performance level for restoration of NCCLs after 12 months especially after acid etching.

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The aim of this study was to evaluate technical quality and post-operative pain of single visit root canal treatment of chronic apical periodontitis filled by bioceramic sealer. Material and Methods: Fifty-two non vital teeth with chronic apical periodontitis were treated in single visit. The main inclusion criteria were radiographic evidence of apical periodontitis and a diagnosis of pulpal necrosis. The canals were prepared with ProTaper Universal (Dentsply Maillefer, Ballaigues, Switzerland). The gutta percha master cone was used for final irrigation activation using alternatively 2.5% NaOCl and 17% EDTA. All canals were filled by single cone of gutta-percha (Endosequence BC pointTM, Brasseler, USA) and bioceramic sealer (Endosequence BC sealerTM, Brasseler, USA). The technical quality of root filling was evaluated by control radiographs, the clinical postoperative pain and the need for analgesic consumption were assessed during one week post-treatment. The data were analyzed using the Mann-Whitney U and chi-square test, the significance was set at P<.05 Results: Overall 87% of all evaluated teeth were found to exhibit a root filling with an acceptable quality level. Assessment of the post-operative sensitivity revealed a rate equal to 6% (3 cases). The intensity of the pain assessed by a verbal rating scale revealed one case of moderate pain, which required treatment with anti-inflammatories (400 mg ibuprofen) during one week and occlusion reduction. Conclusion:This study revealed that a single-session endodontic treatment of infected teeth by single-cone root canal obturation associated with bioceramic sealer showed minimal incidence on post-operative pain and acceptable quality level of root filling.

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