ISSN:
1365-2842
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Medicine
Notes:
This pilot study concerned the cyclic fatigue of five different endodontic post systems (AccessPost®, Flexi-Flange®, Flexi-Post®, ParaPost®, and Vlock®) with four different core materials (Tytin® Silver amalgam, Ti-Core®, Ketac-Silver® and G-C Miracle Mix®). In vitro cyclic fatigue was performed using a fatigue machine that simulates masticatory fatigue forces. An instantaneous force of 5 lb was applied to each post and core combination for a test configuration of 4 000 000 repetitions or until failure occurred. The type of failure and number of repetitions at failure was recorded for each sample tested. Two-way anova was used to compare groups. All posts/core samples with Ti-Core and Tytin Silver amalgam completed the test configuration of 4 000 000 cycles without failures. All posts/core samples with Ketac-Silver failed before the 4 000 000 test cycle configuration, all as a result of core failures. All posts/core samples with G-C Miracle Mix failed in a similar way. The Newman–Keuls multiple comparison test illustrated that Ti-Core and Tytin Silver amalgam were similar to each other and were superior to both G-C Miracle Mix and Ketac-Silver. Similar fatigue test results are found in the literature.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1046/j.1365-2842.2000.00470.x
