REBELO, Tatiane de Oliveira; BRITTO, Maria Letícia Borges    NABESHIMA, Cleber Keiti. Extrusion evaluation of root filling material during thermomechanical condensation of gutta-percha using different apical plugs. Arq. Odontol. []. 2011, 47, 2, pp. 73-77. ISSN 1516-0939.

Aim: To analyze the extrusion of root filling material during thermomechanical condensation of gutta-percha using apical plugs of calcium hydroxide associated with iodoform or Mineral Trioxide Aggregate (MTA). Materials and Methods: Thirty permanent canines were used, divided into three groups: G1 - MTA apical plug; G2 - Calcium hydroxide associated with iodoform plugs; and G3 (control) - no apical plug. After filling the root canal, the extruded material could be observed through the direct analysis of the apex using a magnifying glass. The data obtained were evaluated by the chisquare test at a significance level of 5%. Results: Calcium hydroxide associated with iodoform apical plugs proved to be similar to the control group, both of which were statistically different from the MTA apical plug (p=0.024). Conclusion: The MTA apical plug proved to be more effective in controlling the material extrusion of the root filling during the thermomechanical technique.

: Root canal filling; Gutta-percha; Tooth apex.