Group | Mandibular teeth | Finish Line | Mean residual dentine thickness after preparations coronally (mm ± SD) | |||
Mesial (AMco) | Distal (ADco) | Lingual (Alco) | Buccal (ABco) | |||
1 | Upper Laterals | Shoulder | 0.53 ± 0.39 | 0.70 ± 0.13 | 1.30 ± 0.33 | 1.32 ± 0.34 |
2 | Chamfer | 0.73 ± 0.36 | 0.92 ± 0.22 | 1.47 ± 0.21 | 1.62 ± 0.30 | |
3 | Knife Edge | 0.93 ± 0.19 | 1.15 ± 0.27 | 1.50 ± 0.30 | 1.51 ± 0.24 | |
4 | Lower Centrals | Shoulder | 0.61 ± 0.11 | 0.63 ± 0.08 | 1.15 ± 0.25 | 1.02 ± 0.18 |
5 | Chamfer | 0.80 ± 0.17 | 0.97 ± 0.26 | 1.57 ± 0.12 | 1.37 ± 0.12 | |
6 | Knife Edge | 1.02 ± 0.16 | 1.07 ± 0.19 | 1.58 ± 0.30 | 1.39 ± 0.20 | |
7 | Lower Laterals | Shoulder | 0.67 ± 0.08 | 0.58 ± 0.20 | 1.22 ± 0.30 | 1.32 ± 0.32 |
8 | Chamfer | 0.80 ± 0.17 | 0.70 ± 0.10 | 1.55 ± 0.98 | 1.43 ± 0.22 | |
9 | Knife Edge | 1.00 ± 0.25 | 1.05 ± 0.29 | 1.37 ± 0.36 | 1.47 ± 0.25 | |
|
| P-value | 0.001 | 0.001 | 0.001 | 0.001 |