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KMID : 0362120180400020057
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Journal of Technologic Dentistry
2018 Volume.40 No. 2 p.57 ~ p.62
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Flexural strength of composite resin fabricated by various polymerization method
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Kim Dong-Yeon
Park Jin-Young
Kang Hoo-Won
Kim Ji-Hwan
Kim Woong-Chul
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Abstract
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Purpose: The aim of this study is to evaluate composite resins of indirect restorations for testing of flexural strength according to various polymerization methods.
Methods: Specimen was produced a total of 40 to 10 per each group with a length 25 mm, width 2 mm, thickness 2 mm using a Teflon zig. The polymerization groups were classified into four groups. The first group proceeded with light curing only(LC group). The second group proceeded with light and heat curing(LHC group). The third group proceeded with air press and light curing(ALC group). The fourth group proceeded with air press, light and heat curing(ALHC group). Each prepared group was evaluated by flexural strength test. Statistical analysis was performed by one-way ANOVA. Post-test was performed with Tukey test.
Results: The lowest in the ALC group was 119.18 MPa and the highest in the ALHC group was 168.15 MPa. There were statistically significant differences.
Conclusion : The composite resin of the indirect restoration is recommended to heat curing along with the air press.
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KEYWORD
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Composite resin, Light curing, Heat curing, Flexural strength
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