Table 3.
Effects of cleaning method and ultrasonic duration on color change parameters (ΔE00) of clear aligners
| Group 1 ICC + 0 min |
Group 2 ICC + 5 min |
Group 3 ICC + 10 min |
Group 4 CP + 0 min |
Group 5 CP + 5 min |
Group 6 CP + 10 min |
|
|---|---|---|---|---|---|---|
| ΔEt0−t1 | ||||||
| Mean ± SD | 26.95 ± 9.80 | 31.10 ± 10.76 | 26.25 ± 9.90 | 37.30 ± 14.19 | 29.35 ± 12.42 | 31.85 ± 10.81 |
| 95% CI | 20.72; 33.17 | 24.22; 37.90 | 19.96; 32.54 | 28.28; 46.32 | 21.45; 37.24 | 24.99; 38.72 |
| ΔEt0−t2 | ||||||
| Mean ± SD | 22.90 ± 9.45 | 31.10 ± 11.90 | 27.19 ± 8.87 | 38.27 ± 13.55 | 30.27 ± 12.33 | 31.72 ± 9.64 |
| 95% CI | 16.90; 28.91 | 23.53; 38.62 | 21.56; 32.83 | 29.66; 46.88 | 22.44; 38.10 | 25.59; 37.84 |
| ΔEt1−t2 | ||||||
| Mean ± SD | 8.92 ± 5.35 | 9.47 ± 3.93 | 8.91 ± 4.32 | 7.89 ± 3.20 | 10.30 ± 5.66 | 9.95 ± 4.77 |
| 95% CI | 5.53; 12.32 | 6.97; 11.96 | 6.17; 11.65 | 5.85; 9.93 | 6.70; 13.89 | 6.92; 12.99 |
SD Standard deviation, CI Confidence intervals, ICC Invisalign Cleaning Crystals, CP Corega Proguard, 0 min No ultrasonic cleaning, 5 min 5 min of ultrasonic cleaning, 10 min 10 min of ultrasonic cleaning