The Scientific World Journal

Research Article

Effect of Gamma Irradiation on Structural and Biological Properties of a PLGA-PEG-Hydroxyapatite Composite

Table 5

Detailed results of MTT assay (percent of vital cells in comparison to control group) for hydroxyapatite, copolymer, and composite under 0, 25, and 50 KGy doses of gamma irradiation in days 3, 7, and 14.
Material Nonirradiated samples
Percent of vital cells in comparison to control group		 25 KGy irradiated samples
Percent of vital cells in comparison to control group		 50 KGy irradiated samples
Percent of vital cells in comparison to control group
Day 3Day 7Day 14Day 3Day 7Day 14Day 3Day 7Day 14
Hydroxyapatite47.7 ± 4.66 40.79 ± 10.6639.43 ± 1.2364.3 ± 12.849.42 ± 7.0871 ± 15.247.28 ± 260.77 ± 3.5565.4 ± 12
Copolymer32.07 ± 2.0223.5 ± 5.5814.68 ± 0.5240.9 ± 217.87 ± 1.9815.07 ± 1.734.6 ± 4.5717.28 ± 2.4416.88 ± 2.7
Composite36.65 ± 0.821.44 ± 1.0724.34 ± 6.1353.26 ± 22.820.37 ± 4.0223.6 ± 4.338.26 ± 3.5224.61 ± 9.322.1 ± 6.2