Dental Journal (Majalah Kedokteran Gigi)
ISSN 1978-3728
Vol. 47 / No. 1 / Published : 2014-03
Order : 10, and page :52 - 56
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Original Article :
The effect of position and volumetric fraction polyethylene fiber on the flexural strength of fiber reinforced composite
Author :
- Catur Septommy*1
- Widjijono*2
- Rini Dharmastiti*3
- Bagian Prostodonsia, Fakultas Kedokteran Gigi Institut Ilmu Kesehatan Bhakti Wiyata Kediri, Kediri
- Bagian Biomaterial, Fakultas Kedokteran Gigi Universitas Gadjah Mada, Yogyakarta
- Jurusan Teknik Mesin dan Industri, Fakultas Teknik Universitas Gadjah Mada, Yogyakarta
Abstract :
Background: Composite resin is a combination of filler and matrix. The additional of fiber in the composite resin has a function as load-bearing in mastication. Polyethylene fiber has been used as a reinforced to receive the forces on the fixed denture fiber reinforced composite (FRC). Purpose: The purpose of this study was to determine the effect of the position and the volumetric fraction of fibers on the flexural strength and modulus polyethylene FRC. Methods: This study used 7 groups with variations in the position and the volume of fiber. Group I, position compression volume 1 sheet; group II, 2 volume compression sheet position; group III, volume 1 sheet neutral position; group IV, neutral position volume 2 sheets; group V, position tension volume 1 sheet; group VI position tension volume 2 sheets; and group VII without fiber. Each group consisted of 6 samples and FRC rod-shaped samples with size (25 x2 x 2) mm. Samples were tested by three-point bending test with a universal testing machine. The data were analyzed by two-way Anova and LSD test continued (α= 0,05). Results: Group VI had the highest mean flexural strength than others (360.74 MPa) and group IV had the highest flexural modulus than others (3.56 GPa). The flexural strength and modulus with the variation of position or volume showed a significant differences (p<0.05), while the interaction between position and volume showed no significant difference (p>0.05). Conclusions: The position fiber on tension and additional two strips on volumetric fiber affected the increasing flexural strength and modulus of FRC.
Keyword :
Fiber reinfoced composite, polyethylene, position, volumetric, flexural,
References :
Shalaby WS ,(2007) Polymers for dental and orthopedic applications New York, USA : CRC Press Taylor & Francis Group
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Volume : 47 / No. : 1 / Pub. : 2014-03 |
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