Single-Cone Technique

For group BC-SC, a small amount (1–2 reference markings of the EndoSequence BC sealer syringe) of EndoSequence BC sealer was gently dispensed into the canal to fill the coronal third. The sealer was carefully spread onto the canal walls up to the WL using a size 15 K-type file (Dentsply/Maillefer). Then, a size 50.02 EndoSequence gutta-percha cone coated with a small amount of sealer was slowly inserted into the canal up to the WL. Following that, the gutta-percha cone was cut at the level of the cementodentinal junction with a heated carrier, and gentle vertical pressure was applied with compactors (1.1 mm diameter, Dentsply/Maillefer). This procedure was repeated twice to compact the gutta-percha into the coronal portion of the root canal.