論文

査読有り
2018年10月20日

Feasibility of a Three-Dimensional Porous Uncalcined and Unsintered Hydroxyapatite/poly-d/l-lactide Composite as a Regenerative Biomaterial in Maxillofacial Surgery

Materials
  • Yunpeng Bai
  • ,
  • Takahiro Kanno
  • ,
  • Hiroto Tatsumi
  • ,
  • Kenichi Miyamoto
  • ,
  • Jingjing Sha
  • ,
  • Katsumi Hideshima
  • ,
  • Yumi Matsuzaki

11
10
開始ページ
2047
終了ページ
2047
記述言語
掲載種別
研究論文(学術雑誌)
DOI
10.3390/ma11102047
出版者・発行元
MDPI AG

This study evaluated the feasibility of a novel three-dimensional (3D) porous composite of uncalcined and unsintered hydroxyapatite (u-HA) and poly-d/l-lactide (PDLLA) (3D-HA/PDLLA) for the bony regenerative biomaterial in maxillofacial surgery, focusing on cellular activities and osteoconductivity properties in vitro and in vivo. In the in vitro study, we assessed the proliferation and ingrowth of preosteoblastic cells (MC3T3-E1 cells) in 3D-HA/PDLLA biomaterials using 3D cell culture, and the results indicated enhanced bioactive proliferation. After osteogenic differentiation of those cells on 3D-HA/PDLLA, the osteogenesis marker genes runt-related transcription factor-2 (Runx2), and Sp7 (Osterix) were upregulated. For the in vivo study, we evaluated the utility of 3D-HA/PDLLA biomaterials compared to the conventional bone substitute of beta-tricalcium phosphate (β-TCP) in rats with critical mandibular bony defects. The implantation of 3D-HA/PDLLA biomaterials resulted in enhanced bone regeneration, by inducing high osteoconductivity as well as higher β-TCP levels. Our study thus showed that the novel composite, 3D-HA/PDLLA, is an excellent bioactive/bioresorbable biomaterial for use as a cellular scaffold, both in vitro and in vivo, and has utility in bone regenerative therapy, such as for patients with irregular maxillofacial bone defects.

リンク情報
DOI
https://doi.org/10.3390/ma11102047
URL
http://www.mdpi.com/1996-1944/11/10/2047/pdf

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