Master-Dent® N-Methasone is a radiopaque material for permanent root-canal filling. Its composition provides antiseptic and anti-inflammatory properties to reduce post-operative trauma. The conventional powder and liquid formula allows the clinician to adjust the viscosity of the material according to the obturation technique. Before the paste hardens, it penetrates the narrowest fissures and maintains its therapeutic effects throughout the treatment until completely set. After final obturation, N-Methasone neither retracts nor resorbs.