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Progress in Orthodontics

Table 4 The results of the curve-fitting analysis of the ester peak for Clear Aligner (C)

From: Εffect of cleansers on the composition and mechanical properties of orthodontic aligners in vitro

Group

Peak area (%)

1743 cm−1

1727 cm−1

1712 cm−1

1693 cm−1

1677 cm−1

1664 cm−1

C–CO

3.9

29.1

61.3

5.7

–

–

C-RB

2.1

28.5

64.6

4.8

–

–

C-RC

2.1

26.9

66.2

4.8

–

–

C-ST

1.9

27.7

60.4

4.1

3.4

2.5

  1. 1727 cm−1: Free C=O groups; 1712 cm−1: H–bonded C=O groups; 1743, 1693 cm−1: Oxidation byproducts; 1677, 1664 cm−1: Acid impurities
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