Dynamics of Alloplastic Bone Grafts on an Early Stage of Corticotomy-Facilitated Orthodontic Tooth Movement in Beagle Dogs

Figure 7

Microphotograph of a buccopalatal/lingual section of the 1-week experiment. Most of the grafted MBCP+ particles were well maintained. (a) Maxilla. (b) Higher magnification of (a). On the pressure side, the PDL space was wider than at 3 days. (c) Higher magnification of (b). Extravasation of RBC was observed in the PDL space. (d) Tension side at the palatal bone crest. The tension side showed abundant cells compared with the pressure side and a widened PDL space. (e) Higher magnification of (d). Abundant PDL fibroblasts were seen. (f) Higher magnification of (d). Active osteoblasts forming a new bone were observed. (g) Mandible. Most of the grafted MBCP+ particles were well maintained. (h) Higher magnification of (g). Pressure side. The PDL was compressed. (i) Higher magnification of (g). The tension side showed a widened PDL space. Masson’s trichrome stain. Original magnification was ×12.5 for (a) and (g), ×100 for (b), (d), (h), and (i), and ×400 for (c) and (f).

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