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Table 9 Mean ± standard deviations for the effect of storage on FS

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 160.5 ± 8.6 62.4 ± 5.6 51.2 ± 6.8
Z 250 XT 179 ± 8.4 29.2 ± 5.4 39.1 ± 3.9
Herculite XRV Ultra 138.8 ± 10.3 33.7 ± 6.1 19.6 ± 5.7
Radiation exposure Grandio 216.6 ± 10.3 118.9 ± 7.8 27.3 ± 5.8
Z 250 XT 219.1 ± 7.2 58 ± 7.4 29.9 ± 5.2
Herculite XRV Ultra 119.5 ± 9.2 24.3 ± 5.6 18.7 ± 3.5
Total storage   172.2 ± 38.3A 54.4 ± 32.9B 31 ± 12.5C
  1. Means with same superscript capital letters for the total storage are not statistically significant at P = 0.05