Table 3 Young’s modulus (MPa) of clear aligner materials with varied water immersion times.

From: Mechanical properties of thermoformed and direct-printed aligner materials after immersion in 37 °C water: a 14-day in vitro study

Clear Aligner Materials

Immersed Time in 37° C Water Bath

0 min

5 min

30 min

1 h

3 h

6 h

9 h

1 day

3 days

7 days

10 days

14 days

TC-85

1169.8 ± 118.53

784.11 ± 43.626

637.56 ± 68.735

603.77 ± 79.507

349.46 ± 62.975

252.04 ± 29.291

240.16 ± 36.644

239.25 ± 44.943

325.1 ± 40.705

245.87 ± 62.524

374.83 ± 53.255

289.58 ± 18.512

TR-07

1259.4 ± 156.82

995.84 ± 152.62

655.49 ± 73.678

653.49 ± 125.27

415.44 ± 42.687

312.61 ± 35.909

298.89 ± 55.99

448.73 ± 82.66

387.61 ± 131.03

619.4 ± 188.66

557.3 ± 38.996

560.18 ± 84.80

TA-28

1401.6 ± 126.22

867.08 ± 118.02

496.37 ± 149.6

564.28 ± 121.32

280.32 ± 61.538

137.99 ± 10.506

170.25 ± 54.908

299.42 ± 55.547

277.48 ± 70.585

217.15 ± 86.912

437.46 ± 50.815

311.1 ± 128.15

Zendura A

2654.8 ± 1669.8

1859.6 ± 137.07

1786.5 ± 142.44

1894 ± 108.11

1730.3 ± 243.54

1786.8 ± 200.27

1761.2 ± 192.39

1898.2 ± 93.855

1836.4 ± 128.64

1949.8 ± 175.14

1936.5 ± 85.741

1986.8 ± 303.98

Zendura FLX

1016.9 ± 118.53

988.57± 43.626

937.69 ± 68.735

1018.9 ± 79.507

966.74 ± 62.975

1048.3 ± 29.291

949.77 ± 36.644

934.55 ± 44.943

885.96 ± 40.705

962.84 ± 62.524

1023.4 ± 53.255

1212.3 ± 18.512

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