TY - JOUR
T1 - Self-activated mesh device using shape memory alloy for periosteal expansion osteogenesis
AU - Yamauchi, Kensuke
AU - Takahashi, Tetsu
AU - Tanaka, Kenko
AU - Nogami, Shinnosuke
AU - Kaneuji, Takeshi
AU - Kanetaka, Hiroyasu
AU - Miyazaki, Toshiki
AU - Lethaus, Bernd
AU - Kessler, Peter
PY - 2013/7
Y1 - 2013/7
N2 - The present study evaluated the use of this self-activated shape memory alloy (SMA) device, with a focus on its effects in the region under the periosteum. Twelve Japanese white rabbits were used in this study. The device was inserted under the periosteum at the forehead. In the experimental group, the device was pushed, bent, and attached to the bone surface and fixed with a titanium screw. In control group, the device was only inserted under the periosteum. After 14 days, the screw was removed and the mesh was activated in the experimental group. Rabbits were sacrificed 5 and 8 weeks after the operation and newly formed bone was histologically and radiographically evaluated. The quantitative data by the area and the occupation of newly formed bone indicated that the experimental group had a higher volume of new bone than the control group at each consolidation period. Histologically, some newly formed bone was observed and most of the subperiosteal space underneath the device was filled with fibrous tissue, and a thin layer of immature bone was observed in the control group. In the experimental group, multiple dome-shaped bones, outlined by thin and scattered trabeculae, were clearly observed under the SMA mesh device. The use of self-activated devices for the periosteal expansion technique may make it possible to avoid donor site morbidity, trans-skin activation rods, any bone-cutting procedure, and the following intermittent activation procedure.
AB - The present study evaluated the use of this self-activated shape memory alloy (SMA) device, with a focus on its effects in the region under the periosteum. Twelve Japanese white rabbits were used in this study. The device was inserted under the periosteum at the forehead. In the experimental group, the device was pushed, bent, and attached to the bone surface and fixed with a titanium screw. In control group, the device was only inserted under the periosteum. After 14 days, the screw was removed and the mesh was activated in the experimental group. Rabbits were sacrificed 5 and 8 weeks after the operation and newly formed bone was histologically and radiographically evaluated. The quantitative data by the area and the occupation of newly formed bone indicated that the experimental group had a higher volume of new bone than the control group at each consolidation period. Histologically, some newly formed bone was observed and most of the subperiosteal space underneath the device was filled with fibrous tissue, and a thin layer of immature bone was observed in the control group. In the experimental group, multiple dome-shaped bones, outlined by thin and scattered trabeculae, were clearly observed under the SMA mesh device. The use of self-activated devices for the periosteal expansion technique may make it possible to avoid donor site morbidity, trans-skin activation rods, any bone-cutting procedure, and the following intermittent activation procedure.
KW - animal model
KW - bone graft
KW - maxillofacial
KW - osteogenesis
U2 - 10.1002/jbm.b.32876
DO - 10.1002/jbm.b.32876
M3 - Article
C2 - 23359561
SN - 1552-4973
VL - 101B
SP - 736
EP - 742
JO - Journal of Biomedical Materials Research Part B-applied Biomaterials
JF - Journal of Biomedical Materials Research Part B-applied Biomaterials
IS - 5
ER -