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Table 3 Pre-aging absorbance values of the three aligners

From: Optical properties of orthodontic aligners—spectrophotometry analysis of three types before and after aging

Wavelength (nm) All-In Invisalign F22 p value
400 0.265 ± 0.036 0.172 ± 0.004 0.107 ± 0.023 <0.0007
450 0.242 ± 0.035 0.158 ± 0.003 0.098 ± 0.024 <0.0012
500 0.230 ± 0.033 0.152 ± 0.003 0.096 ± 0.023 <0.0012
550 0.223 ± 0.031 0.148 ± 0.003 0.094 ± 0.022 <0.0013
600 0.217 ± 0.030 0.146 ± 0.003 0.093 ± 0.022 <0.0012
650 0.212 ± 0.030 0.144 ± 0.003 0.091 ± 0.023 <0.0015
700 0.209 ± 0.030 0.143 ± 0.004 0.090 ± 0.024 <0.0015
  1. Significance level p < 0.05