Fig. 3

Micro-CT scans of trabecular bone. Vertical 3-dimensional images and cross-sectional 2-dimentional images at the level of the blue line (a–c; S Snus floor. A Alveolar ridge) and movie of horizontal rotation (Additional files 1, 2, 3) of the bone core are shown. A fixed threshold range (123–132) was applied to segment the grafted bone from the background. New bone is observable in the grafted sites. Residual hydroxyapatite is indicated in purple; its volume was not equal in the samples