Table 1.
Baseline data of subjects and white spot lesions.
| Parameter | Study population | |
|---|---|---|
| Number of subjects | 44 | |
| Age | 27.1 (15–39) years | |
| Sex |
18 (41%) male 26 (59%) females |
|
| Ethnicity | Caucasian | 36 (82%) |
| Arabian | 3 (7%) | |
| African | 3 (7%) | |
| Indian | 2 (4%) | |
| DMFT | 4.4 ± 5.1 (0–21) | |
| Oral hygiene | Poor | 0 |
| Unsatisfactory | 3 (7%) | |
| Sufficient | 5 (11%) | |
| Good | 11 (25%) | |
| Excellent | 25 (57%) | |
| Test lesions (n = 44) | Control lesion (n = 44) | |
|---|---|---|
| Plaque index | 0.20 ± 0.25 (0–1.2) | |
| Gingival index | 0.08 ± 0.12 (0–1.2) | |
| Clinical index white spot lesion* | ||
| 0 | 0 (0%) | 0 (0%) |
| 1 | 2 (4%) | 1 (2%) |
| 2 | 7 (16%) | 10 (23%) |
| 3 | 18 (41%) | 19 (43%) |
| 4 | 17 (39%) | 14 (32%) |
| Lesion appearance | ||
| Shiny | 16 (36%) | 17 (39%) |
| Opaque | 28 (64%) | 27 (61%) |
| Lesion texture | ||
| Smooth/hard | 34 (77%) | 34 (77%) |
| Rough/soft | 10 (23%) | 10 (23%) |
| Lesion location/origin | ||
| Far from sulcus | 1 (2%) | 2 (4%) |
| Close to sulcus | 43 (98%) | 42 (96%) |
| Post-orthodontic | 0 (0%) | 0 (0%) |
| Nyvad score | ||
| Active (Score 1, 2) | 25 (57%) | 30 (68%) |
| Inactive (Score 4, 5) | 19 (43%) | 14 (32%) |
| Laser fluorescence | ||
| Mean (SD) | 6.7 ± 5.3 | 6.5 ± 4.9 |
| Min | 2 | 3 |
| Median | 5 | 5 |
| Max | 29 | 32 |
| Counts (< 10: healthy) | 40 (91%) | 39 (89%) |
| Counts (≥ 10: caries) | 4 (9%) | 5 (11%) |
| Lesion size (morphometry/pixel) | 53′023 ± 70′022 | 50′787 ± 69′584 |
| Clinical phase (first patient in—last patient out) | November 2013–January 2016 | |
*0: No visible colour change, 1: Slight white colour change, only visible after air-drying, 2: Slight white colour change with certain marked white areas, 3: White consistent colour change, 4: Distinct white colour change.