Irreversible pulpitis is an inflammatory condition of the dental pulp, highly painful, representing one of the main reasons for consulting dental emergency. The recommended emergency care is a partial endodontic treatment under local and/or locoregional anesthesia. The purpose of the emergency partial endodontic treatment is to stop the pain of pulpitis by removing a portion of the pulp. The final endodontic treatment is ideally performed 72 hours after. The literature reports major difficulty in obtaining adequate anesthesia in the mandible to perform partial endodontic treatment, especially for the mandibular molars. This results in a very painful care for the patient. The management of this type of emergency is costly in terms of equipment and time for health facilities. Patient comfort, cost saving and rationalization of the care time justify the search for an alternative to emergency partial endodontic treatment. In current practice, the short course oral corticotherapy is used in the management of oral pain from inflammatory origin. Glucocorticoids, thanks to their anti-inflammatory action, can neutralize the inflammatory mediators and thus pain. The pulp inflammation can be treated with this molecule: the effectiveness of intraosseous local steroid injection for irreversible pulpitis of mandibular molars has already been shown but results in local comorbidities and requires specific device. Oral administration of short-course prednisolone is simple and safe but its effectiveness to manage pain caused by irreversible pulpitis has not yet been demonstrated. Per-os administration of prednisolone has a very high (90%) and rapid (≤ 4 hours) bioavailability. No difference in effectiveness between intravenous and oral administration of this molecule was reported. This oral treatment could limit comorbidities and technical difficulties related to intraosseous injection and could delay the endodontic treatment to 72 hours in optimal conditions of anesthesia for the patient. Despite the difficulties described for the partial endodontic treatment, it is very effective in pain reduction and can reach 100% of success. Therefore a non-inferiority design was chosen to compare the effect of a short-course oral corticotherapy to a partial endodontic treatment for the reduction of pain at the emergency care of the irreversible pulpitis in mandibular molars. The intervention arm will receive an oral dose of prednisolone (1 mg/kg) during the emergency visit followed-up by one morning dose by day during three days and the reference arm will have partial endodontic treatment. Both groups will have planned complete endodontic treatment 72 hours after enrolment.
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Pain intensity on a numeric scale
Timeframe: 24 hours after the emergency visit (inclusion)