Hydroxyapatite (HA) bioceramic scaffolds were fabricated by using digital light processing (DLP) based additive manufacturing. Key issues on the HA bioceramic scaffolds, including dispersion, DLP fabrication, sintering, mechanical properties, and biocompatibility were discussed in detail. Firstly, the effects of dispersant dosage, solid loading, and sintering temperature were studied. The optimal dispersant dosage, solid loading, and sintering temperature were 2 wt%, 50 vol%, and 1250 °C, respectively. Then, the mechanical properties and biocompatibility of the HA bioceramic scaffolds were investigated. The DLP-prepared porous HA bioceramic scaffold was found to exhibit excellent mechanical properties and degradation behavior. From this study, DLP technique shows good potential for manufacturing HA bioceramic scaffolds.

中文翻译：

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羟基磷灰石生物陶瓷支架的增材制造：分散体，数字光处理，烧结，机械性能和生物相容性

通过使用基于数字光处理（DLP）的增材制造工艺来制造羟基磷灰石（HA）生物陶瓷支架。详细讨论了HA生物陶瓷支架的关键问题，包括分散，DLP制造，烧结，机械性能和生物相容性。首先，研究了分散剂用量，固含量和烧结温度的影响。最佳分散剂用量，固含量和烧结温度分别为2 wt％，50 vol％和1250°C。然后，研究了HA生物陶瓷支架的力学性能和生物相容性。发现用DLP制备的多孔HA生物陶瓷支架表现出优异的机械性能和降解行为。根据这项研究，DLP技术显示出制造HA生物陶瓷支架的良好潜力。