Table 2 Comparison between sectional and circumferential matrices used in restoration of proximal contact and contour
Parameter | Sectional Matrix | Circumferential Matrix | Mean Difference (95%CI) | P value |
|---|---|---|---|---|
Mean ± SD | Mean ± SD | |||
Contact tightness (N) | 4.22 ± 0.90 | 3.03 ± 0.39 | 1.19 (0.52–1.86) | 0.002 |
Area of concavity (mm 2 ) | 0.03 ± 0.03 | 0.16 ± 0.06 | −0.13 (−0.18 − −0.08) | < 0.001 |
Depth of concavity (mm) | 0.05 ± 0.04 | 0.11 ± 0.03 | −0.06 (−0.09 − −0.03) | 0.001 |
Radius of curvature (mm) | 9.48 ± 4.48 | 5.80 ± 2.24 | 3.69 (0.27–7.10) | 0.036 |