目的:探讨3D打印个性化钛网的引导骨再生(guided bone regeneration,GBR)术及富血小板纤维蛋白(platelet-rich fibrin,PRF)/Bio-Oss复合物修复牙槽骨缺损的应用。方法:纳入2021年3月至2024年2月于甘肃省中医院口腔颌面外科行GBR骨增量...目的:探讨3D打印个性化钛网的引导骨再生(guided bone regeneration,GBR)术及富血小板纤维蛋白(platelet-rich fibrin,PRF)/Bio-Oss复合物修复牙槽骨缺损的应用。方法:纳入2021年3月至2024年2月于甘肃省中医院口腔颌面外科行GBR骨增量手术的牙槽骨缺损患者68例,随机分为3D组(n=34)与传统组(n=34),3D组使用3D打印个性化钛网及PRF/BioOss复合物,传统组使用传统钛网及PRF/Bio-Oss复合物。对比2组术后2、4、6个月的牙槽骨增加高度、宽度、体积及并发症发生率。结果:3D组术后2、4、6个月的牙槽骨增加高度、宽度与传统组相比,但差异均无统计学意义(P>0.05)。3D组术后2个月、4个月的牙槽骨增加体积均高于传统组,但差异均无统计学意义(P>0.05),术后6个月时牙槽骨增加体积显著高于传统组(P<0.05)。3D组发生早期暴露、晚期暴露、总暴露、创口感染的比例均低于传统组,但差异均无统计学意义(P>0.05)。结论:3D打印个性化钛网及PRF/Bio-Oss复合物的GBR术修复牙槽骨缺损效果良好,术后6个月骨增加体积显著高于应用传统钛网的GBR术,且不影响其安全性,值得临床推广应用。展开更多
In recent years, additive manufacturing (AM), known as “3D printing”, has experienced exceptional growth thanks to the development of mechatronics and materials science. Fused filament deposition (FDM) manufacturing...In recent years, additive manufacturing (AM), known as “3D printing”, has experienced exceptional growth thanks to the development of mechatronics and materials science. Fused filament deposition (FDM) manufacturing is the most widely used technique in the field of AM, due to low operating and material costs. However, the materials commonly used for this technology are virgin thermoplastics. It is worth noting a considerable amount of waste exists due to failed print and disposable prototypes. In this regard, using green and sustainable materials is essential to limit the impact on the environment. The recycled, bio-based, and blended recycled materials are therefore a potential approach for 3D printing. In contrast, the lack of understanding of the mechanism of interlayer adhesion and the degradation of materials for FDM printing has posed a major challenge for these green materials. This paper provides an overview of the FDM technique and material requirements for 3D printing filaments. The main objective is to highlight the advantages and disadvantages of using recycled, bio-based, and blended materials based on thermoplastics for 3D printing filaments. In this work, solutions to improve the mechanical properties of 3D printing parts before, during, and after the printing process are pointed out. This paper provides an overview on choosing which materials and solutions depend on the specific application purposes. Moreover, research gaps and opportunities are mentioned in the discussion and conclusions sections of this study.展开更多
文摘目的:探讨3D打印个性化钛网的引导骨再生(guided bone regeneration,GBR)术及富血小板纤维蛋白(platelet-rich fibrin,PRF)/Bio-Oss复合物修复牙槽骨缺损的应用。方法:纳入2021年3月至2024年2月于甘肃省中医院口腔颌面外科行GBR骨增量手术的牙槽骨缺损患者68例,随机分为3D组(n=34)与传统组(n=34),3D组使用3D打印个性化钛网及PRF/BioOss复合物,传统组使用传统钛网及PRF/Bio-Oss复合物。对比2组术后2、4、6个月的牙槽骨增加高度、宽度、体积及并发症发生率。结果:3D组术后2、4、6个月的牙槽骨增加高度、宽度与传统组相比,但差异均无统计学意义(P>0.05)。3D组术后2个月、4个月的牙槽骨增加体积均高于传统组,但差异均无统计学意义(P>0.05),术后6个月时牙槽骨增加体积显著高于传统组(P<0.05)。3D组发生早期暴露、晚期暴露、总暴露、创口感染的比例均低于传统组,但差异均无统计学意义(P>0.05)。结论:3D打印个性化钛网及PRF/Bio-Oss复合物的GBR术修复牙槽骨缺损效果良好,术后6个月骨增加体积显著高于应用传统钛网的GBR术,且不影响其安全性,值得临床推广应用。
文摘In recent years, additive manufacturing (AM), known as “3D printing”, has experienced exceptional growth thanks to the development of mechatronics and materials science. Fused filament deposition (FDM) manufacturing is the most widely used technique in the field of AM, due to low operating and material costs. However, the materials commonly used for this technology are virgin thermoplastics. It is worth noting a considerable amount of waste exists due to failed print and disposable prototypes. In this regard, using green and sustainable materials is essential to limit the impact on the environment. The recycled, bio-based, and blended recycled materials are therefore a potential approach for 3D printing. In contrast, the lack of understanding of the mechanism of interlayer adhesion and the degradation of materials for FDM printing has posed a major challenge for these green materials. This paper provides an overview of the FDM technique and material requirements for 3D printing filaments. The main objective is to highlight the advantages and disadvantages of using recycled, bio-based, and blended materials based on thermoplastics for 3D printing filaments. In this work, solutions to improve the mechanical properties of 3D printing parts before, during, and after the printing process are pointed out. This paper provides an overview on choosing which materials and solutions depend on the specific application purposes. Moreover, research gaps and opportunities are mentioned in the discussion and conclusions sections of this study.
