【摘要】 目的研究钛网成型复合自体颗粒骨移植重建下颌骨节段性缺损的成骨情况。方法7只Beagle犬,在一侧下颌骨制备长4.0 cm的节段性缺损。用钛网成型重建下颌节段性缺损,钛钉固定。将切除后的下颌骨和髂骨剪成直径约2 mm颗粒,紧密充填在钛网内。术后6个月进行下颌骨X线片、组织学切片和扫描电镜观察。结果移植的颗粒骨成骨良好,未见明显吸收,形成成熟的骨结构,与下颌骨断端形成一个牢固的整体。结论钛网成型复合自体颗粒骨移植成骨良好,重建后的下颌骨外形满意,能够提供满足义齿修复和种植义齿所需的牙槽突高度和宽度。更多还原

【Abstract】 Objective To investigate the bone formation of the shaped titanium mesh with autogenous particulate bone graft for reconstructing the segmental mandibular defect.Methods Seven Beagle dogs were prepared with unilateral 4.0 cm segmental mandibular defect.Titanium mesh was shaped according to the mandibular defect and was fixed with titanium screws.The ablated mandibular bone and iliac bone were crashed to approximately 2 mm particulates and then filled into the titanium mesh tightly.X-ray films,SEM,and histological sections of the reconstructed mandibles were examined to evaluate the bone formation of the bone graft in the animals 6 months after surgery.Results The grafted autogenous particulate bones healed well and the new mature bone has formed.The reconstructed mandibles had good shape and did not have bone resorption.Conclusions The shaped titanium mesh combined with the autogenous particulate bone graft can form good bone in reconstructed mandibles.It can provide enough width and height of the alveolar for prostheses and implants.更多还原