Abstract
Aims: This study was performed to evaluate the effect of Pepsi, orange juice and coffee as storage media on the Degree of Conversion (DC) of three types of composite resin. Materials and Methods: Three types of visible light-curing composite restorative material (Te-Econom, Tetric ceram and VOCO) were used in this study, The specimen disks of composites were prepared using Polyethylene mold 5mm in diameter and 1mm in height, The degree of conversion was measured for each group after storage for 7days in light-proof boxes containing storage media, The degree of conversion of the samples was measured by Fourier transform infrared spectroscopy (FTIR), One way analysis of variance and paired differences tests were used for statistical analysis. Results: The results revealed that there was a significant difference in the degree of conversion of the three types of composite resins when stored in all type of storage media as compared to dry samples(control group). Conclusions:The degree of conversion of the three types of composite resin was increased when stored in different storage media. Key words: Storage Media, degree of Conversion, composite Resin.
Highlights
The results revealed that all samples of the three types of composite resin stored in orange juice, Pepsi, and coffee have a significant difference(p
It was obvious from this analysis that there was a non significant difference (p>0.05) in DC of Tetric ceram and Voco composite resin stored in all storage media,but they significantly differe(p
The result found that there was a non significant difference in DC of Tetric ceram and VOCO composite resin samples stored in all storage media, but they significantly different from Te-Econom composite resin samples (Table 4). This is due to the difference of organic matrix of Te-Econom from Tetric ceram and VOCO composite resin (Table 1).This result agree with the findings of Filho et al(22) who found that differences in the viscosity of organic matrix have an influence in the DC of composite resin material
Summary
Manufacturer dimethacrylate and Schaan, triethylene glycol (20.2% by weight). Ivoclar vivadent silicon dioxide and spheroide mixed oxide (79% by weight). Hybrid resincomposite dimethacrylate (18.8% by weight) and a small amount of catalyst, stabilizers and pigments (0.21% by weight).
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