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Table 5 Mean ±  standard deviations for the effect of storage on DC%

From: The effect of radiation exposure and storage time on the degree of conversion and flexural strength of different resin composites

   24-h 3-m 6-m
No-radiation exposure Grandio 74.0 ± 0.4 75.3 ± 0.4 76.2 ± 1.7
Z 250 XT 74.8 ± 1.1 77.3 ± 1.2 77.7 ± 1.2
Herculite XRV Ultra 77.8 ± 0.1 80.0 ± 0.9 82.2 ± 1.1
Radiation exposure Grandio 74.4 ± 0.4 76.2 ± 0.4 77.5 ± 0.4
Z 250 XT 75.1 ± 1.0 78.1 ± 1.1 78.5 ± 0.4
Herculite XRV Ultra 78.3 ± 1.7 81.8 ± 0.2 83.0 ± 1.0
Total storage   75.7 ± 1.9A 78.1 ± 2.4B 79.2 ± 2.8B
  1. Mean with same superscript capital letters for the total storage are not statistically significant at P = 0.05