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Evaluation of the apical seal produced by injected thermoplasticized gutta-percha in the absence of smear layer and root canal sealer

1986; Elsevier BV; Volume: 12; Issue: 3 Linguagem: Inglês

10.1016/s0099-2399(86)80299-0

1878-3554

J.T. Evans, James H.S. Simon,

Drilling and Well Engineering

The apical seal produced by injected thermoplasticized gutta-percha with and without root canal sealer and smear layer was evaluated by ink penetration. Sixty-four extracted human teeth were divided into eight groups with and without the smear layer removed. They were filled with injected thermoplasticized gutta-percha or lateral condensation using Procosol sealer or with no sealer. The results showed that injected thermoplasticized gutta-percha does not provide an apical seal to ink penetration when used without a root canal sealer, even with the smear layer removed. Sealer was the only significant variable responsible for apical seal when conditions of gutta-percha delivery, smear layer presence or absence, and use or deletion of sealer were evaluated. The use of injected thermplasticized gutta-percha should be accompanied by a sealer whether or not the snear layer has been removed.