Radiopacity analysis of humidity influence on the solubilization of different retrograde filling materials

Resumo

This study aimed to analyze the level
of radiopacity of different materials used in endodontic retrofilling
procedure regarding the influence of humidity on solubilization over
a period of 30 days. Material and methods: 10 specimens with 10
mm diameter and 1mm thick were made with each of the materials.
The following retrograde filling materials were tested: glass ionomer
Vitro Fil LC®, IRM®, MTA Angelus®, Sealer 26® and silver amalgam
capsule DFL Alloy. These materials have been handled by a single
operator, according to the recommendations of their respective
manufacturers. The obtained specimens were surrounded by moist
gauze and incubated in a heater for thirty days at 37°C and 100%
humidity. The samples were x-rayed, via the digital system Digora
Optime®, at three different moments: first, 15th, and 30th day of
incubation. For the analysis of radiopacity of the samples, the shades
of gray were measured through ImageTool® software. Results and
Conclusion: Data were subjected to statistical analysis using ANOVA,
repeated measures design, followed by Tukey test with a significance
level of 5%. According to the results, it could be observed that the
only tested materials that have undergone changes in radiopacity,
in accordance with the period of incubation in humidity, were the
glass ionomer Vitro Fil LC® and Sealer 26®.