Year : 2019

Volume : Volume 10

Issue : Issue 1

Address for correspondence :
Dr. Purushotam Kumar.
drpurushotamkumar009@gmail.com

Abstract

Aim:  The purpose of this study was to compare the flexural strength of two interim restorative materials. Materials and Method: Twenty identical samples sized 25×2×2-mm were made from two interim materials (TempSpan and Revotek LC) according to ADA specification No. 27. The specimens were stored in artificial saliva for 2 weeks and then thermocycled for 2500 cycles (5-55 ̊C). A standard three-point bending test was conducted on the specimens with a universal testing machine at a cross- head speed of 0.75mm/min. Data were analyzed by using one-way ANOVA tests to measure the flexural strength of temporary materials. Results: Bis-acryl resin (TempSpan) showed the highest, and the light polymerized resin (Revotek LC) showed the lowest flexural strength. The mean values of flexural strength for the examined materials were as follow: Temp- Span=120.00MPa and Revotek LC=47.16MPa. The one-way ANOVA test showed a significant difference between the flexural strength of 2 temporary materials (p< 0.05).   Conclusion: Bis-acryl resins were statistically superior light-cured resins. Therefore, application of bis-acryl resins should be deliberated in patients with heavy occlusion and in cases that need long-term use of interim restorations.

Keywords: Flexural strength, Interim restoration, Prosthodontics.