PMID- 37441027 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20230718 IS - 2046-2069 (Electronic) IS - 2046-2069 (Linking) VI - 13 IP - 30 DP - 2023 Jul 7 TI - Morphologies, mechanical and in vitro behaviors of DLP-based 3D printed HA scaffolds with different structural configurations. PG - 20830-20838 LID - 10.1039/d3ra03080f [doi] AB - In the field of bone engineering, porous ceramic scaffolds are in great demand for repairing bone defects. In this study, hydroxyapatite (HA) ceramic scaffolds with three different structural configurations, including the body-centered cubic (BCC), the face-centered cubic (FCC), and the triply periodic minimal surface (TPMS), were fabricated through digital light processing (DLP) based 3D printing technologies. The effects of the structural configurations on the morphologies and mechanical properties of the DLP-based 3D printed HA scaffolds were characterized. Furthermore, in vitro evaluations, including in vitro cytocompatibility, bone alkaline phosphatase (ALP) activity assay, and protein expression, were conducted to assess HA scaffold behavior. Finally, we evaluated the effects of structural configurations from these aspects and selected the most suitable structure of HA scaffold for bone repair. CI - This journal is (c) The Royal Society of Chemistry. FAU - Liu, Ke AU - Liu K AD - Center of Stomatology, China-Japan Friendship Hospital Beijing 100029 China drxubaohua@163.com. AD - Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences and Peking Union Medical College Beijing 100029 China. FAU - Zhou, Qing AU - Zhou Q AD - Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structure, Beijing Institute of Technology Beijing 100081 China herujie@bit.edu.cn. FAU - Zhang, Xueqin AU - Zhang X AD - Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structure, Beijing Institute of Technology Beijing 100081 China herujie@bit.edu.cn. FAU - Ma, Lili AU - Ma L AD - Center of Stomatology, China-Japan Friendship Hospital Beijing 100029 China drxubaohua@163.com. FAU - Xu, Baohua AU - Xu B AD - Center of Stomatology, China-Japan Friendship Hospital Beijing 100029 China drxubaohua@163.com. FAU - He, Rujie AU - He R AUID- ORCID: 0000-0003-2498-2363 AD - Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structure, Beijing Institute of Technology Beijing 100081 China herujie@bit.edu.cn. LA - eng PT - Journal Article DEP - 20230711 PL - England TA - RSC Adv JT - RSC advances JID - 101581657 PMC - PMC10333813 COIS- There are no conflicts to declare. EDAT- 2023/07/13 19:15 MHDA- 2023/07/13 19:16 PMCR- 2023/07/11 CRDT- 2023/07/13 15:18 PHST- 2023/05/09 00:00 [received] PHST- 2023/07/03 00:00 [accepted] PHST- 2023/07/13 19:16 [medline] PHST- 2023/07/13 19:15 [pubmed] PHST- 2023/07/13 15:18 [entrez] PHST- 2023/07/11 00:00 [pmc-release] AID - d3ra03080f [pii] AID - 10.1039/d3ra03080f [doi] PST - epublish SO - RSC Adv. 2023 Jul 11;13(30):20830-20838. doi: 10.1039/d3ra03080f. eCollection 2023 Jul 7.