Three-dimensional obturation of the root canal using injection-molded, thermoplasticized dental gutta-percha.

The technique of injection-molding was applied to thermoplasticized dental gutta percha in vitro. Teeth were biochemically instrumented before obturation of the root canal space. Thermoplasticized gutta percha was injected, with and without the use of a sealer, using a pressure syringe. The quality of the seal was assessed by dye penetration studies. The findings showed that the injection-molding technique leads to a seal comparable to that of conventional approaches. The technique holds promise for in vivo use.