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. 2022 Sep 24;22:426. doi: 10.1186/s12903-022-02456-z

Table 3.

Mean ∆L, ∆a, ∆b values before and after aging

Thermal aging
Test specimens Start 5000 cycles 20,000 cycles
NX3 (LC) L 84.64 84.27 81.81
a − 0.27 − 0.09 − 0.37
b 6.76 6.62 6.53
NX3 (DC) L 85.90 85.15 81.40
a − 1.06 − 0.33 − 1.04
b 6.84 6.43 7.17
Variolink (LC) L 83.87 85.43 83.02
a 2.19 2.17 2.35
b 7.97 8.27 7.86
Variolink (DC) L 85.57 84.18 86.26
a − 0.16 − 0.01 − 0.47
b 5.77 5.57 6.57
RelyX (LC) L 86.70 85.95 87.76
a − 0.60 − 0.65 − 0.06
b 4.72 5.24 5.42
RelyX (DC) L 84.71 85.29 82.41
a − 0.33 − 0.37 − 0.13
b 7.47 7.36 6.78