Xi’an Medical University
目的 探讨个性化表面多孔钛根形种植体的生物力学性能，为多孔根形种植体的设计及临床植入提供理论依据。方法 根据CT数据运用3-matic软件设计表面多孔个性化根形种植体模型，并将其与下颌骨模型进行配准、网格划分和赋予材料学参数，负载200N分析种植体的最大应力及其周围骨的应力应变。选择合适的临床病例微创拔牙后即刻植入种植体并进行临床评价。结果 表面多孔个性化根形种植体的峰值应力主要集中在种植体的实体结构和多孔结构的接触界面上，且实体结构最大应力为137.71MPa，多孔结构最大应力为37.008MPa，均小于其屈服强度。3D打印多孔根形种植体拔牙后即刻植入后初期稳定性良好，创伤小，力学传导与天然牙类似，简化了手术流程，缩短了治疗时间，患者满意度较高。结论 3D打印表面多孔根形种植体为拔牙后即刻种植开辟了一种新的方法。
[Abstract]: Objective The purpose is to personalize the biomechanical properties of porous root-analogue implants, and to provide theoretical basis for the design and clinical implantation of porous root-analogue implants. Methods Based on CT data, 3-matic software was used to design the surface porous personalized root-analogue implant model, and after registering it with the mandible model, the mesh was divided and material parameters were given. The implant was loaded with 200N, and the maximum stress of the implant and the stress and strain of the bone around the implant were analyzed. Select the appropriate clinical case and implant the implant immediately after tooth extraction and conduct clinical evaluation. Results The peak stress of the surface porous personalized root-analogue implant is mainly concentrated on the interface between the solid structure and the porous structure of the implant. The maximum stress of the solid structure is 137.71 MPa, and the maximum stress of the porous structure is 37.008 MPa, which are less than its yield strength. 3D printed porous root-analogue implants have good initial stability immediately after implantation, minimal trauma, and similar mechanical transmission to natural teeth. This simplifies the surgical process, shortens the treatment time, and has high patient satisfaction. Conclusion. 3D printed surface porous root-analogue implant opens up a new method for immediate implantation after tooth extraction.