Objective: To determine the antioxidant activity of the hydroalcoholic extract of Origanum vulgare through DPPH, ABTS and FRAP essays. Material and Methods: The sample collected from Origanum vulgare was dried, reduced in size and placed to macerate 500 grams of dry sample in 1000 mL of 97% ethanol for one week. After time, the macerate was processed through a filter and concentrated in an oven. The formulations were carried out and the dilutions were analyzed with the antioxidant essays. Results: DPPH Method, the 25% gel showed an IC50 of 98.485 mg / mL equivalent to the dilution of 78.789% and for the Trolox® standard, it presented IC50 of 2.48 µg / mL. ABTS Method, the 25% gel formulation presented IC50 of 3.687 mg / mL equivalent to a dilution of 77.75% and for the Trolox® standard it presented IC50 of 2.99 µg / mL, a difference from the other formulations. The results evidenced ...

Aim: To compare the sealing capacity of mineral trioxide (MTA®) and tricalcium silicate (Biodentine®) for retrograde filling in single-root permanent teeth. Materials and methods: Thirty-eight permanent single-root teeth with complete apical closure were selected and randomly divided into two experimental groups (n = 15): Group 1: MTA®, and Group 2: Biodentine®, in addition to positive and negative controls. Root treatment was performed with the MTWO rotary system, and obturation was carried out by means of the continuous wave thermoplastic system (Beefill) using Grossman-type cement as a sealant. Apical end apicoectomy was performed followed by the preparation of standardized retro-apical cavities and the respective fillings with MTA ® and Biodentine® according to the study group. Subsequently, the specimens were subjected to an apical filtration process of Chinese ink and transpa...