Evaluation of the Flexural Strength of Submicron Hybrid Composite using Different Fabrication Methods: An in vitro Study
Achla Sethi, Kanwar Sidharth, Taranjit Kaur, Sukhpash Singh Sandhu, Amit K Joseph
Citation Information :
Sethi A, Sidharth K, Kaur T, Singh Sandhu S, Joseph AK. Evaluation of the Flexural Strength of Submicron Hybrid Composite using Different Fabrication Methods: An in vitro Study. J Contemp Dent Pract 2018; 19 (2):205-209.
The aim of this study is to perform three-point bend test on submicron hybrid composite fabricated with direct and indirect veneer technique.
Materials and methods
A total of 20 maxillary anterior teeth were selected, and labial reduction of 0.5 to 0.75 mm with a chamfered finish line for veneer preparation was done. Teeth were divided into two groups depending on fabrication technique being used: group I—veneers fabricated with light and group II—veneers fabricated with light and heat (PHOTOPOL). Specimens were tested under universal testing machine (UTM) where load was applied at a crosshead speed of 1 mm/min with a pointer of 1 mm diameter. Data were statistically analyzed.
Results
The results showed highly significant difference between the two groups with the mean value of group I (246.7 ± 2.285 N) and group II (531.1 ± 4.411 N).
Conclusion
The curing mechanism involving light and heat increases the fracture resistance of the veneers.
Clinical significance
Within the limitations of this study, the results led to the conclusion that the association of common composites with a simple postcure heat treatment may be an alternative for current indirect composite systems, although more studies are needed to assess other properties of the composites for this application.
How to cite this article
Sethi A, Makkar S, Sidharth K, Kaur T, Sandhu SS, Joseph AK. Evaluation of the Flexural Strength of Submicron Hybrid Composite using Different Fabrication Methods: An in vitro Study. J Contemp Dent Pract 2018;19(2):205-209.
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