EFFECT OF FIBER VOLUME ON ELASTIC MODULUS OF POST-CORE FABRICATED REINFORCED COMPOSITE

Benni Benyamin*  -  Faculty of dentistry, Universitas Sulatan Agung, Department Pediatric, Indonesia
Endah Aryati Ekoningtyas  -  Dental Therapist and Hygienist, Poltekkes Kemenkes Semarang
Sandy Christiono  -  Faculty of dentistry, Universitas Sulatan Agung, Department Pediatric
Dwi Warna Ayu Fatmawati  -  Faculty of Dentistry, Universits Jember, Dental Conservative Department

(*) Corresponding Author
Background: Post-core restoration is one restoration after endodontic treatment by optimizing the root canal as a retention. Fracture of the root is the most common failure due to the post being less elastic in holding the chewing load, especially the metal post. FRC post-core indicates to prevent tooth fracture. In addition, the FRC post-core minimizes the reduction of dentine tissue in the root canals, called a minimally invasive dentistry approach. This study examined the effect of the number of fibres on the elastic moduli of fabricated FRC posts using a three-bending point test to determine the elasticity of fabricated FRC posts.
Method: The study was experimental laboratory research with the post-only control group design using polyethene fibre (Kerr) and flowable composite resin (Kerr), prefabricated post-core (Kerr). The study was divided into four groups, namely prefabricated, fabricated with a volume of 1 fibre, 2 fibres, and 3 fibres, where each group consisted of 6 samples.
Result: There was no significant difference in the magnitude of the force on the specimen (p>0.05). The force among the groups was the same, the alteration (deflection) of the specimens among the groups was significantly different (p<0.05), except for FRC 3 fibres with prefabricated. The results showed a significant difference among the groups (p<0.05) in the value of the elastic modulus.
Conclusion: The number of fibres of fabricated FRC posts affected on the elastic moduli of FRC post.

Keywords: Post-core restoration, Fiber Volume, Fabricated reinforced Composite

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