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Table 5 Pre-aging transmittance 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

53.58 ± 4.1

68.65 ± 1.1

79.29 ± 5.0

<0.0005

450

56.20 ± 3.7

70.51 ± 1.0

80.82 ± 5.0

<0.0005

500

57.74 ± 3.5

71.29 ± 1.0

81.21 ± 4.7

<0.0005

550

58.73 ± 3.3

71.80 ± 1.0

81.43 ± 4.6

<0.0005

600

59.55 ± 3.1

72.16 ± 1.0

81.67 ± 4.5

<0.0005

650

60.21 ± 3.0

72.44 ± 1.1

82.08 ± 4.6

<0.0005

700

60.72 ± 2.9

72.66 ± 1.1

82.45 ± 4.6

<0.0005

  1. Significance level p < 0.05