elements™ Obturation Unit Cartridges are for use in the elements™ Obturation Unit System. Gutta percha is a radiopaque fill for your root canal therapies. These cartridges work with the existing elements Obturation Unit and elements-free system for use in the warm vertical obturation technique. The new cartridge needle can now be prebent to fit the canal anatomy Needle is 0.5 mm longer to better reach the apex of the canal Cartridge extrudes slightly more gutta percha than before, allowing it to fill up to 4 canals