GuttaCore is the first obturator with a crosslinked gutta-percha carrier enabling warm gutta-percha to be delivered without leaving a plastic carrier in the canal. Retreatment is thus simplified. This warm gutta-percha flows three-dimensionally throughout the entire canal system with the ease of a single insertion. If the fit is not passive, the size verifier can be used as a finishing file. When the final shape is a .04 taper, select a GuttaCore Obturator package one size smaller than the last file taken to working length. If WaveOne Gold Small is used => fill with GuttaCore #20, Primary => #25, Medium => #30 or 35, Large => #40 or 45. Brush a very light coating of AH Plus Jet sealer circumferentially to the canal wall with the paper point and use an additional absorbent point to remove any excess sealer. GuttaCore Obturators are heated at ThermaPrep 2 Obturator Oven. Size verifier is not included.