Czynniki wpływające na stan tkanek okołowierzchołkowych zębów z wypełnionymi kanałami korzeniowymi u pacjentów leczonych przez studentów stomatologii – analiza przekrojowa
Endodontic treatment protocol
The endodontic treatment followed a defined protocol [14]. After the absolute isolation of the tooth with a rubber dam, followed by operative field antisepsis with 5% iodinated alcohol and 3% hydrogen peroxide, coronal access was accomplished. The root canals were explored with #6 to #15 K-files (Maillefer Instruments, Ballaigues, Switzerland) and prepared by the manual crown-down concept using K-files and Gates-Glidden drills (Maillefer Instruments, Ballaigues, Switzerland). The root canals were irrigated with 1%, 2.5%, or 5.25% sodium hypochlorite solutions (Biodinâmica Laboratórios, São Paulo, Brazil) for cases such as vital, necrotic, or necrosis pulp associated with periapical lesions, respectively. Irrigation was performed using a Luer Lock syringe with a 27 G needle. The WL was set at 1,0 mm from the radiographic apex. Apical patency was obtained only in root canals with necrotic pulp. The apical segment of the root canal was shaped using the step-back technique until the preflaring limit was reached. After smear layer removal using 17% EDTA solution and final irrigation with NaOCl solution, the root canals were dried with paper points. The main gutta-percha cone (Odous, Belo Horizonte, MG, Brazil) was set to the WL, and the canal was filled according to the thermomechanical technique using an epoxy resin-based endodontic sealer (Sealer 26, Dentsply, Petrópolis, RJ, Brazil). After coronal restoration was completed, a final radiograph of the root filling was taken in accordance with the bisecting-angle technique and processed following the time-temperature method.
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