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. 2015 Jul 1;38(3):281–285. doi: 10.1093/ejo/cjv045

Table 1.

Measurement of bone density at the end of expansion period (T1) (Hounsfield Unit).

Groups N Median %25p %75p P
Group I 12 810.64b 778.49 821.33 <0.001
Group II 12 849.69a 842.40 901.87
Group III 12 802.84b 765.56 822.32
Group IV 12 691.70c 669.22 753.00

N, sample size; group I, 10 µg/ml O3; group II, 25 µg/ml O3; group III, 40 µg/ml O3; group IV, control; p, represents the differences among the groups; same letters represent the similarity, while different letters represent the differences among the groups.