Table 2 Intergroup comparison of the amount of root resorption at the end of treatment (Mann-Whitney tests)
From: External root resorption with the self-ligating Damon system—a retrospective study
Variable | Group 1—Damon N = 25 | Group 2—conventional N = 27 | P | ||
|---|---|---|---|---|---|
Mean (median) | Interquartile deviation | Mean (median) | Interquartile deviation | ||
EARR 12 | 0.72 (0.00) | 1.00 | 0.70 (1.00) | 1.00 | 0.978 |
EARR 11 | 0.72 (0.00) | 1.00 | 0.59 (0.00) | 1.00 | 0.653 |
EARR 21 | 0.88 (1.00) | 1.00 | 0.66 (0.00) | 1.00 | 0.480 |
EARR 22 | 0.80 (1.00) | 1.00 | 0.74 (1.00) | 1.00 | 0.595 |
EARR 32 | 0.56 (0.00) | 1.00 | 0.55 (0.00) | 1.00 | 0.833 |
EARR 31 | 0.60 (1.00) | 1.00 | 0.62 (1.00) | 1.00 | 1.000 |
EARR 41 | 0.64 (1.00) | 1.00 | 0.66 (0.00) | 1.00 | 0.869 |
EARR 42 | 0.48 (0.00) | 1.00 | 0.40 (0.00) | 1.00 | 0.673 |