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yxfbbiedtj
Wysłany: Nie 11:00, 13 Mar 2011
Temat postu: rgc nom qsh nqx
Lack of flexibility in segmental mandibular distraction osteogenesis animal model
Into the regeneration of bone segment, the initial reconstruction of the mandibular branch, and with the contralateral ramus similar shape and height. 3 Discussion retractor small, built-in automation and to achieve the approximate traction continuity is essential distraction osteogenesis trends cited. Reasonable by the Ti-Ni alloy of nickel titanium design traction traction can be implemented in 2004 a Medical College repair, 25 (4) AcadJPPostgradMedSch / 5, ugq-LA, the automatic, continuous, steady load, and in theory apply to distraction operation of more complex bone segment missing mandibular reconstruction, and we establish a suitable animal model. We compared the full thickness of cortical bone osteotomy cut and plate the formation of two way transmission, the results show that the latter operative difficulty, reliable traction applied to retain the lingual periosteum attached to the basic guarantee for bone segment transport disc and the bone retractor regeneration of blood supply support; simply relying on traction control not sufficient to maintain the tension necessary to send disk stability, and Kirschner wires in the auxiliary guide, even if does not meet the stability criteria of rigid internal fixation, bone regeneration is ideal results . After increasing traction strength, bone transmission distance is extended, the elastic deformation of the tractor with the gradual recovery may be imposed stretch was gradually reduced, increasing the initial load intensity, which can be extended to balance the distance and organizational resistance. Animal model-free, we tried the free ramus of Discontinued missing segment reconstruction, under the guidance of the reconstruction plate, the basic realization of the ramus height and shape of the recovery. To reduce the number of operations, we used a surgical osteotomy and placement of traction, that is not set requirements in previous papers interval of (1atency), found that bone formation has not received significant effect on the results of analysis may be due to conditions in the continuous stretch Strengthened capacity of bone regeneration under certain relations; on canine animal model of observation that disk transfer speed in every bone segment 1 ~ 1.5mm, slightly higher than the requirements in principle Illizarov speed of 1mm per day; after 3 months When drawn as x-ray examination, bone regeneration even, almost normal bone density. Integrate these modeling results, indicating that the elasticity distraction osteogenesis is a simple and fast reconstruction of bone regeneration technology, and clinical application, it is worth more on this model for large-scale work and further study of this method of mandible neurovascular bundle and bone within the segment of the impact of the teeth, providing the ideal for the clinical features of mandible reconstruction of choice. [
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