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Results of the least significant difference test between the mean value of the fractal dimension (FD) of the slot surface of brackets of different manufacturers.
| Manufacturer | FD |
p < 0.05 (as Compared with) |
|---|---|---|
| MS | 1.6431 ± 0.0334 | S |
| S | 1.6998 ± 0.0389 | MS, N, O |
| N | 1.6462 ± 0.0389 | S |
| O | 1.6462 ± 0.0218 | S |
