Table 1. Descriptive parameters describing each arm of the randomized clinical trial.
| HT (N = 109) | CT (N = 103) | p value | ||
|---|---|---|---|---|
| Age, mean (yrs) (SD; min-max) |
6.89 (0.874; 5.00–8.27) |
6.58 (0.850; 4.99–8.08) |
NSa | |
| Sex N (%) | Male | 54 (49.5%) | 53 (51.5%) | NSa |
| Female | 55 (50.5%) | 50 (48.5%) | NSa | |
| SES | Medium | 19 (17.4%) | 16 (15.5%) | NSa |
| Low | 90 (82.6%) | 87 (84.5%) | NSa | |
| Caries | dmft | 6.08 (3.06) | 6.33 (2.02) | NSa |
| Occlusal | 11 (10.0%) | 7 (7.0%) | NSa | |
| Approximal | 98 (90.0%) | 96 (93.0%) | NSa | |
| Mean procedure time in minutes (SD) | 9.10 (2.87; 5.0–25.0) |
33.91 (10.61; 23.0–85.0) |
<0.001a | |
| Survival rate at 24 months (%) | 102 (93.6%) | 97 (94.1%) | NSb | |
| Minor failures | 3 (2.7%) | 6 (5.8%) | <0.05b | |
| Major failures | 7 (6.4%) | 6 (5.8%) | NSb | |
| Pulp exposure during carious tissue removal | 0 | 2 | - | |
| Dropout rate (%) |
6 months | 4 (3.7%) | 4 (3.9%) | NSa |
| 12 months | 5 (4.6%) | 8 (7.8%) | ||
| 18 months | 14 (12.8%) | 13 (12.6%) | ||
| 24 months | 25 (22.9%) | 22 (21.4%) | ||
| Immediate postoperative complications (Lip biting, allergy, incorrect placement) | 2 (1.8%) | 4 (3.9%) | NSa | |
| Tooth exfoliation | 2 (1.8%) | 1 (0.9%) | NSa |
HT, Hall technique; CT, conventional technique; SES, socioeconomic status; dmft, decayed missing filled teeth; SD, standard deviation
a, student t-test
b, Fisher’s exact test; p>0.05 considered significant; NS, not significant.