Treatment group

Control group

0 d

645 ± 228μm

655 ± 180μm

6 m

278 ± 118μm^*

439 ± 188μm

9 m

265 ± 130μm^*

389 ± 143μm

12 m

257 ± 123μm^*

402 ± 126μm