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| Mean residual dentine thickness after preparation (mm ± SD) | |||
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Group | Mandibular teeth | Finish Line | Mesial (AMce) | Distal (ADce) | Lingual (ALce) | Buccal (ABce) |
1 | Upper Laterals | Shoulder | 0.70 ± 0.09 | 0.58 ± 0.16 | 1.28 ± 0.41 | 1.03 ± 0.31 |
2 | Chamfer | 0.92 ± 0.31 | 1.02 ± 0.22 | 1.42 ± 0.33 | 1.32 ± 0.15 | |
3 | Knife Edge | 1.60 ± 0.10 | 1.62 ± 0.19 | 2.05 ± 0.21 | 1.80 ± 0.20 | |
4 | Lower Centrals | Shoulder | 0.60 ± 0.12 | 0.63 ± 1.18 | 1.08 ± 0.22 | 1.10 ± 0.12 |
5 | Chamfer | 0.60 ± 0.12 | 0.63 ± 0.18 | 1.65 ± 0.25 | 1.42 ± 0.11 | |
6 | Knife Edge | 1.55 ± 0.16 | 1.47 ± 0.18 | 2.05 ± 0.40 | 2.02 ± 0.28 | |
7 | Lower Laterals | Shoulder | 0.58 ± 0.22 | 0.65 ± 0.28 | 1.15 ± 0.29 | 0.83 ± 0.22 |
8 | Chamfer | 0.78 ± 0.20 | 0.85 ± 0.10 | 1.53 ± 0.17 | 1.25 ± 0.14 | |
9 | Knife Edge | 1.55 ± 0.16 | 1.47 ± 0.17 | 2.12 ± 0.33 | 1.97 ± 0.21 | |
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| P value | 0.001 | 0.001 | 0.001 | 0.001 |