Table 2.
Laser Fluorescence Readings throughout the Study Duration given as Averaged Values from three Readings and as Changes to Day 0.
| Control Group | Test Group 1 | Test Group 2 | Test 1 vs Control Test 2 vs Control* |
||||
|---|---|---|---|---|---|---|---|
| Values | Change to Day 0 | Values | Change to Day 0 | Values | Change to Day 0 | ||
| Day 0 | |||||||
| Mean | 27.2 ± 6.6 | 31.4 ± 6.5 | 25.3 ± 7.1 | ||||
| Median | 27.2 | 30.7 | 24.0 | ||||
| 95% CI | 24.8–29.7 | 28.9–33.8 | 22.6–27.9 | ||||
| Day 90 | |||||||
| Mean | 30.2 ± 6.6 | 3.3 ± 6.0 | 26.9 ± 5.8 | −4.4 ± 4.1 | 19.4 ± 6.4 | −5.9 ± 4.7 | p < 0.0005 |
| Median | 31.3 | 1.7 | 26.7 | −4.0 | 19.7 | −4.8 | p < 0.0005 |
| 95% CI | 27.7–32.7 | 1.0–5.5 | 24.7–29.1 | (−6.0)–(−2.9) | 17.0–21.8 | (−7.6)–(−4.1) | |
| Day 180 | |||||||
| Mean | 30.4 ± 5.7 | 4.2 ± 6.0 | 24.8 ± 4.7 | −6.7 ± 4.8 | 18.8 ± 5.9 | −6.6 ± 6.5 | p < 0.0005 |
| Median | 31.0 | 3.7 | 24.5 | −6.2 | 19.0 | −7.3 | p < 0.0005 |
| 95% CI | 28.0–32.9 | 1.6–6.8 | 23.0–26.7 | (−8.5)–(−4.8) | 16.6–21.1 | (−9.1)–(−4.1) | |
| Day 360 | |||||||
| Mean | 31.8 ± 6.4 | 5.5 ± 7.8 | 22.7 ± 4.3 | −8.5 ± 5.9 | 17.6 ± 5.1 | −7.7 ± 7.8 | p < 0.0005 |
| Median | 32.3 | 5.0 | 22.0 | −7.7 | 18.7 | −6.0 | p < 0.0005 |
| 95% CI | 29.0–34.6 | 2.2–8.9 | 21.0–24.4 | (−10.8)–(−6.2) | 15.6–19.6 | (−10.8)–(−4.6) | |
*Tested effect: Interaction in months and treatment group with hierarchical linear model (HLM); Test Group 1 vs Test Group 2 did not yield significant differences (p = 0.595).
Changes are tested in an ANCOVA-model; Adjusted for laser fluorescence value at Day 0, sex, age, plaque index at Day 0.