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Table 2 Mean flexural strength (FS; MPa) of resin composites according to the irradiation distance

From: Influence of irradiation distance on the mechanical performances of resin composites polymerized with high-irradiance light curing units

Resin composite

Irradiation distance (mm)

0

2

4

8

Z3P

166.27 ± 21.11a,A

167.20 ± 9.72a,A

162.88 ± 10.19a,A

142.29 ± 16.42b,A

Z3F

141.64 ± 9.75a,B

140.08 ± 9.94a,B

140.77 ± 9.88a,B

132.80 ± 6.9a,A

SDR

133.95 ± 13.85a,B

129.82 ± 12.89a,C

127.69 ± 11.16a,C

135.83 ± 8.16a,A

  1. Different superscript lowercase letters in the same row indicate a significant difference according to the irradiation distance (p < 0.05). Different superscript uppercase letters in the same column indicate a statistically significant difference between the composite resins at the same irradiation distance (p < 0.05)