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ePaper created 2016-03-31, 16:35:38 | version 1.38.0
| case report use of MTA 30 roots1 2016 Use of mineral trioxide aggregate in endodontic retro-filling Author: Dr Fernanda Maria Klimpel, Brazil Mineral trioxide aggregate (MTA) is an endo dontic sealer that emerged on the market in 1998. Throughprovenscientificresultsithasbecamethe true miracle of endodontics. An excellent sealing material, it provides setting expansion and integ rity of the seal owing to low solubility, tissue bio compatibility and high biological regeneration. The release of calcium ions provides antibacterial activity. Its radiopacity is excellent, and it can be used for thermal condensation owing to its melt ing point of 150 °C. MTA also has good capacity for adhesion to den tine,makingitresistanttotheforcesofdisplacement, and greater sealing power than other cements when tested to assess the quantity of bacterial infiltration. It is indicated for treatment of perforations in the furcation region, of internal resorption, and of root perforationsviasurgerywhenitisimpossibletotreat the perforation via the canal or treatment has been unsuccessful; for use in para-endodontic surgery as a retro-filling material; and for direct pulpal protec tion, pulpotomy, apexogenesis and apexification. Fig.1: Panoramic radiograph. Fig.2: Periapical radiograph of the apex showing the presence of a fistula. Fig.3: Periapical radiograph of the endodontic retreatment. Figs.4 & 5: Instruments for endodontic retro-filling. Fig.1 Fig.2 Fig.4 Fig.5 Fig.3