Table 1.
Mean fracture resistances and SDs of all groups using one-way ANOVA (N).
| Groups | Min | Max | Mean ± SD | P-value |
|---|---|---|---|---|
| CF | 918.00 | 1,438.00 | 1,143.84 ± 170.97a | |
| WF | 362.60 | 687.00 | 514.89 ± 108.84b | |
| BF | 719.90 | 1,116.00 | 933.67 ± 126.04c | |
| LF | 404.10 | 1,066.00 | 722.89 ± 245.30bc | <0.001 |
| MF | 394.30 | 943.40 | 617.54 ± 174.47b | |
| BLF | 570.00 | 1,126.30 | 874.01 ± 183.56c |
C, circumferential ferrule; W, without ferrule; B, buccal ferrule; L, lingual ferrule; M, mesial ferrule; B, buccal–lingual ferrule; same superscript letters show mean values with no statically significant difference between groups (P > 0.05).