Table 3.
Univariate and adjusted Cox regression analysis for restoration survival (36-month follow-up)
| Variable | Success n (%) | Failure n (%) | Total (n) | HR univariate† 95% CI‡ |
p value | HR adjusted† 95% CI‡ |
p value |
|---|---|---|---|---|---|---|---|
| Group | |||||||
| ART (ref) | 32(49.23) | 33 (50.77) | 65 | ||||
| Hall Technique | 64 (96.97) | 2 (3.03) | 66 |
0.052 0.013–0.22 |
< 0.001* |
0.058 0.014–0.24 |
< 0.001* |
| Operator | |||||||
| Specialist (ref) | 35 (79.55) | 9 (20.45) | 44 | ||||
| Student 1 | 29 (67.44) | 14 (32.56) | 43 |
1.67 0.72–3.86 |
0.233 | - | - |
| Student 2 | 32 (72.73) | 12 (27.27) | 44 |
1.20 0.60–2.85 |
0.682 | - | - |
| Age (years) | |||||||
| 5–6.9 (ref) | 16 (66.67) | 8 (33.33) | 24 |
1.33 0.67–3.12 |
0.510 | - | - |
| 7–8.9 | 55 (73.33) | 20 (26.67) | 75 |
1.39 0.48–4.02 |
0.538 | - | - |
| ≥ 9 | 25 (78.13) | 7 (21.88) | 32 | ||||
| Sex | |||||||
| Male (ref) | 57 (71.25) | 23 (28.75) | 80 | ||||
| Female | 39 (76.47) | 12 (23.53) | 51 |
0.86 0.43–1.73 |
0.673 | - | - |
| dmft/DMFT | |||||||
| 1—2 | 29 (61.70) | 18 (38.30) | 47 | ||||
| 3—4 | 34 (75.56) | 11 (24.44) | 45 |
0.53 0.25–1.13 |
0.102 |
0.63 0.29–1.36 |
0.242 |
| ≥ 5 | 32 (84.21) | 6 (15.79) | 38 |
0.33 0.13–0.84 |
0.019* |
0.44 0.17–1.16 |
0.097 |
| Jaw | |||||||
| Upper (ref) | 57 (72.15)c | 22 (27.85) | 79 | ||||
| Lower | 39 (75.00) | 13 (25.00) | 52 |
0.86 0.43–1.71 |
0.668 | - | - |
| Side | |||||||
| Right (ref) | 48 (68.57) | 22 (31.43) | 70 | ||||
| Left | 48 (78.69) | 13 (21.31) | 61 |
0.62 0.31–1.23 |
0.170 |
0.54 0.26–1.10 |
0.089 |
| Tooth | |||||||
| 1st primary molar (ref) | 62 (75.61) | 20 (24.39) | 82 | ||||
| 2nd primary molar | 34 (69.39) | 15 (30.61) | 49 |
1.19 0.610–2.334 |
0.605 | - | - |
| Cavity volume** | |||||||
| 0–10 mm3 (ref) | 46 (73.02) | 17 (26.98) | 63 | ||||
| 11–20 mm3 | 31 (75.61) | 10 (24.39) | 41 |
0.94 0.43–2.06 |
0.882 | - | - |
| 21–30 mm3 | 16 (76.19) | 5 (23.81) | 21 |
0.98 0.36–2.65 |
0.962 | - | - |
| > 30mm3 | 3 (60.00) | 2 (40.00) | 5 |
1.39 0.32–6.06 |
0.657 | - | - |
| Moisture control (no saliva or gingival bleeding contamination) | |||||||
| Maintained (ref) | 95 (74.22) | 33 (25.78) | 128 | ||||
| Not maintained | 1 (33.33) | 2 (66.67) | 3 |
3.161 0.75–13.36 |
0.118 |
2.24 0.48–10.51 |
0.305 |
| Total | 96 (73.28) | 35 (26.72) | 131 |
†HR Hazard ratio, ‡CI confidence interval
*Indicates statistically significance differences (p < 0.05)
**One child in the ART group did not have the cavity dimensions measured and recorded by the operator