These high quality pluggers have a shape that closely matches the final root canal preparation. This maximises condensation forces on the softened gutta percha without placing undue stress on the root canal system. Because the System B Heat Source provides an exact temperature throughout the procedure, the Buchanan pluggers do not over-soften the gutta percha and the warm mass fills lateral canals as easy as it seals apically. When you disengage the heat the pluggers cool almost instantly and separate easily from the condensed gutta percha. Pluggers fit both System B and the new Elements Obturation Unit.