Table 2.
Descriptive statistics such as mean with standard deviation (SD), 95% confidence intervals (95% CI), and the minimum/median/maximum. All values for TBS are presented in MPa (N/mm2).
| TBS | |||||
|---|---|---|---|---|---|
| PEEK | Light Curing Unit | Mean ± SD | 95% CI | Min/Median/Max | |
| PEEK/0% | LED-LCU | chair | 10.5 ± 6.7 b | 7.0; 13.8 | 0.0/9.0/ 23.8 |
| lab | 6.8 ± 4.7 B,b | 4.3; 9.2 | 0.0/6.4/14.7 | ||
| HAL-LCU | chair | 31.2 ± 6.8 a | 27.7; 34.6 | 12.1/31.0/41.2 | |
| lab | 31.0 ± 4.9 A,B,a | 28.4; 33.5 | 22.3/31.6/38.6 | ||
| PEEK/20% | LED-LCU | chair | 14.2 ± 6.4 b | 10.8; 17.4 | 0.0/15.6/23.6 |
| lab | 13.2 ± 9.6 A,b | 8.3; 18.0 | 0.0/10.9/35.3 | ||
| HAL-LCU | chair | 30.9 ± 6.0 a | 27.7; 33.9 | 15.3/32.5/39.1 | |
| lab | 35.1 ± 10.0 *,A,a | 30.0; 40.2 | 0.0/37.3/43.9 | ||
| PEEK/>30% | LED-LCU | chair | 13.5 ± 9.2 b | 8.8; 17.9 | 0.0/12.9/34.5 |
| lab | 7.8 ± 6.6 *,A,B,b | 4.4; 11.2 | 0.0/8.2/17.3 | ||
| HAL-LCU | chair | 29.0 ± 9.8 *,a | 24.0; 33.9 | 4.6/30.7/40.6 | |
| lab | 26.3 ± 9.8 B,a | 21.3; 31.3 | 2.6/28.3/39.7 | ||
LED: Light-emitting diode; HAL: halogen; LCU light curing unit; chair: chairside; lab: labside. * No normal distribution. A,B Significant differences between the PEEK compositions with the same light unit. a,b Significant differences between the light units with the same PEEK composition.