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Objective: This study aimed to itemize the causes for the failure of direct coronal restorations (DCRs) according to the practitioners of Côte d'Ivoire in order to provide recommendations for good practice. Materials and Methods: A descriptive, self-reporting, prospective survey was carried out among 109 dental surgeons (DSs) in the town of Abidjan based on 587 randomly selected practitioners supplied by the National Board of the Order. Results: The results show that 98.10% of the surveyed DSs had previously encountered cases of failure. Fracturing of the restoration, which is the basis for the hiatus, is the main cause of failure according to 51.40% of the surveyed practitioners, followed by pain “under the restoration” cited by 26.20% of them. Failure occurs within 6 months (30.85% of those surveyed), after 5 years (9.6% of those surveyed) for restorations with composite or glass ionomer cement (GIC), while for DCRs with amalgam, failure occurs within 6 months (28.70%), after 5 years (16%) and beyond 10 years (3.20%). Conclusion: The practitioners often encountered failures of DCRs, with fracture of the restoration as the cause. Dental amalgam appears to have a greater longevity than adhesive restorations. Faced with a failure, they more often opted for a replacement of the DCRs rather than a repair.

The aim of this study was to evaluate the attitude of Abidjan dentists towards the treatment of complications linked with the operative time of endodontic treatments. Materials and Methods: This was a descriptive, cross-sectional, prospective study. A survey form, distributed to 135 dentists, allowed relevant information to be collected, such as practitioner characteristics (the type of practice, the number of years in practice), the frequency of performing canal treatments, the complications encountered, and the attitude of the practitioners towards complications. Results: Faced with an instrument fracture, 34% of the practitioners proceed to avulsion of the tooth concerned if it is symptomatic. For a perforation of the chamber floor and/or of the chamber wall, 40.74% obture the lesion. In case of bleeding while shaping the canal, 82.96% of the practitioners postpone the session. With an overfilling of the gutta cone and/or of the cement, 47.4% perform disobturation. With inflammatory or infectious flare-ups, the majority of the practitioners (81%) opt for placement of the tooth in subocclusion, prescription of an analgesic, and monitoring. Conclusion: When a complication occurs, managing it is indispensable. However, the main objective of therapeutic endodontics is not to manage the complications, but to know how not to "generate" them.

Introduction: Composite resins restoration requires a rigorous approach in its implementation, which should be integrated into the learning process. The objective of this study is to assess the immediate quality of filling carried out by students in the

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