| Summary: | Fiber reinforced composite (FRC) is often used as restorative material after
root canal treatment mostly because of its esthetic and mod of elasticity that can be
expected retention with crown restoration after endodontic treatment.
Polymerization shrinkage of resin cement would cause interfacial gap between FRC
post and root canal dentin wall. The aim of this study was to evaluate the
microleakage of prefabricated FRC and fabricated FRC used as root canal post.
In this study 20 mandibular premolar were used as research subjects where
the crown were removed to obtain uniform root length of 18 mm. The root canal
was prepared using crown down technique, obturated with guttapercha using single
cone technique, which then kept in an incubator for 72 hours at 37�C. The subjects
were randomly divided into 2 groups of 10, group I was restored with prefabricated
FRC post and group II with fabricated FRC post. After the subjects were coated
with nail polish followed by sticky wax, the subject were immersed in 2%
methylene blue solution for 1 week. After rinsing and cleaning of the subject, they
were cut mesio-distally. The penetration of the dye was measured using stereo
microscope of 60x magnification. The result was analyzed using t test.
The results showed that there was a significant differences on the
microleakage of prefabricated FRC post and fabricated FRC post (p<0.05), where
the microleakage of prefabricated fRC post was higher than fabricated FRC post (p
=0.003).
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