Surgical Procedure for Mandibular Reconstruction using Apatite Porous Block

应用磷灰石多孔块重建下颌骨的手术方法1)磷灰石多孔块成骨的动物研究日本猴使用两种不同类型和三种不同孔径(80%、60%和40%)的植入材料进行成骨实验。虽然两种材料和三种不同类型的多孔材料在骨形成方面没有显著差异，但在软组织侵入性形成方面，具有最大孔洞(80%)的材料是最有利的，这在研究的早期被注意到。2)临床应用a)下颌骨节段切除后的填充使用磷灰石多孔块结合纯钛接骨板重建下颌骨节段性骨缺损区。根据患者的临床病程，该手术提供了良好的钢板固定和二次骨形成。3)99m&gt；TC骨显像显示所有患者术后均有骨生成，证实骨闪烁可以作为成骨的一个指标，但不同年龄、不同放疗量和不同类型的化疗患者的成骨情况有差异。

SURGICAL PROCEDURE FOR MANDIBULAR RECONSTRUCTION USING APATITE POROUS BLOCK1) An animal study of osteogenesis with Apatite Porous BlocksOsteogenesis using implant materials two different kinds and three different pore sizes, 80%, 60%, and 40%, was investigeted in japanese monkey.Although no significant difference in bone formation were observed among two materials and three different porous types, the materials with the largestpore (80%) was most advantageous in terms of intrusive formation of soft tissues that was noted in the early period of the study.2) Crinical applicationa) Filling after segmental mandibular resectionSegmental mandebular defects were reconstructed using apatite porous blocks conjunction with a pure titanium plate that works by a compression osteosynthesis mechanism. According to the clinical course of patient, this procedure provided good plate fixation and secondary bone formation.3) ^<99m>TC bone scintigraphic study in patients who underwent the prosedureThe bone scintigrams revealed postoperative osteogenesis in all cases, confirming that bone scintigraphic findings may be used as an index of osteogenesis.However, differences in osteogenesis among individual patients of different ages and who underwent different amounts of radiation and different types of chemotherapy were observed.