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| Source | Sum of squares | d.f. | Mean square | F | P |
|---|---|---|---|---|---|
| Diamond bur | 2.417 | 1 | 2.417 | 331.675 | < .001 |
| Stone bur | .189 | 1 | .189 | 25.907 | < .001 |
| Diamond bur × Stone bur | .121 | 1 | .121 | 16.608 | < .001 |
| Error | .321 | 44 | .007 | ||
| Total | 16.583 | 48 | |||
| Corrected total | 3.047 | 47 |
