PMID- 35160769 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220219 IS - 1996-1944 (Print) IS - 1996-1944 (Electronic) IS - 1996-1944 (Linking) VI - 15 IP - 3 DP - 2022 Jan 21 TI - Effect of Hydroxyapatite Nanoparticles and Nitrogen Plasma Treatment on Osteoblast Biological Behaviors of 3D-Printed HDPE Scaffold for Bone Tissue Regeneration Applications. LID - 10.3390/ma15030827 [doi] LID - 827 AB - The need for the repair of bone defects has been increasing due to various causes of loss of skeletal tissue. High density polyethylenes (HDPE) have been used as bone substitutes due to their excellent biocompatibility and mechanical strength. In the present study, we investigated the preosteoblast cell proliferation and differentiation on the adding nano-hydroxyapatite (n-HAp) particles into HDPE scaffold and treating HDPE/n-HAp scaffolds with nitrogen (N(2)) plasma. The three-dimensional (3D) HDPE/n-HAp scaffolds were prepared by fused modeling deposition 3D printer. The HDPE/n-HAp was blended with 10 wt% of n-HAp particle. The scaffold surface was reactive ion etched with nitrogen plasma to improve the preosteoblast biological response in vitro. After N(2) plasma treatment, surfaces characterizations were investigated using Fourier transform infrared spectroscopy, scanning electron microscopy, and atomic force microscopy. The proliferation and differentiation of preosteoblast (MC3T3-E1) cells were evaluated by MTT assay and alkaline phosphatase (ALP) activity. The incorporation of n-HAp particles and N(2) plasma surface treatment showed the improvement of biological responses of MC3T3-E1 cells in the HDPE scaffolds. FAU - Park, Hyunchul AU - Park H AD - Bitgoeul Dental Clinic 2F, Doklibro 8 Nam-gu, Gwangju 61660, Korea. FAU - Ryu, Jaeyoung AU - Ryu J AUID- ORCID: 0000-0002-2940-5875 AD - Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju 61186, Korea. FAU - Jung, Seunggon AU - Jung S AD - Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju 61186, Korea. FAU - Park, Hongju AU - Park H AD - Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju 61186, Korea. FAU - Oh, Heekyun AU - Oh H AD - Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju 61186, Korea. FAU - Kook, Minsuk AU - Kook M AUID- ORCID: 0000-0002-8053-8534 AD - Department of Oral and Maxillofacial Surgery, School of Dentistry, Chonnam National University, Gwangju 61186, Korea. LA - eng PT - Journal Article DEP - 20220121 PL - Switzerland TA - Materials (Basel) JT - Materials (Basel, Switzerland) JID - 101555929 PMC - PMC8836530 OTO - NOTNLM OT - 3D printing OT - 3D scaffold OT - bone substitute OT - high density polyethylene OT - plasma surface treatment COIS- The authors declare no conflict of interest. EDAT- 2022/02/16 06:00 MHDA- 2022/02/16 06:01 PMCR- 2022/01/21 CRDT- 2022/02/15 01:09 PHST- 2021/12/21 00:00 [received] PHST- 2022/01/07 00:00 [revised] PHST- 2022/01/19 00:00 [accepted] PHST- 2022/02/15 01:09 [entrez] PHST- 2022/02/16 06:00 [pubmed] PHST- 2022/02/16 06:01 [medline] PHST- 2022/01/21 00:00 [pmc-release] AID - ma15030827 [pii] AID - materials-15-00827 [pii] AID - 10.3390/ma15030827 [doi] PST - epublish SO - Materials (Basel). 2022 Jan 21;15(3):827. doi: 10.3390/ma15030827.