Evaluation of wear and subsequent dye penetration of endodontic temporary restorative materials.

This study evaluated the wear resistance and sealing property of endodontic temporary restoratives by means of functional stressing using a wear simulator. The pulp chamber of 28 extracted molars was opened and filled with cotton, and then the cavity was filled with a temporary material--Caviton, Temporary Pack, Neodyne-alpha, or TERM. Specimens were subjected to a wear test, and data for wear and dye penetration were analyzed by one-way ANOVA independently (p < 0.05). Wear values of Neodyne-alpha (0.09 +/- 0.05 mm) and TERM (0.24 +/- 0.06 mm) were significantly less than those of Caviton (1.79 +/- 0.15 mm) and Temporary Pack (1.02 +/- 0.40 mm). In terms of dye penetration, Neodyne-a leaked significantly less than the other materials at 0.40 +/- 0.32 mm. On the other hand, there were no significant differences between TERM (1.30 +/- 0.57 mm) and Temporary Pack (2.10 +/- 0.12 mm), and between Caviton (2.60 +/- 0.41 mm) and Temporary Pack.