Long-term effect of honeycomb β-tricalcium phosphate on zygomatic bone regeneration in rats

Ryoko Nakagiri, Satoko Watanabe, Kiyofumi Takabatake, Hidetsugu Tsujigiwa, Toshiyuki Watanabe, Hiroshi Matsumoto, Yoshihiro Kimata

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


In recent years, artificial bones with high biocompatibility have been developed for hard tissue reconstruction. However, current bone replacement methods are inadequate for large defects, causing infection, exposure, and damage. We have developed a new honeycomb β-tricalcium phosphate (TCP) material, which achieved good bone regeneration after implantation in a rat complete zygomatic bone defect. In this study, we further investigated the ability of honeycomb β-TCP for remodeling after bone regeneration as a long-term result. Bone morphogenic protein (BMP)-2-free honeycomb β-TCP (TCP group) and honeycomb β-TCP with BMP-2 (BMP group) were implanted in the zygomatic bone of rats. Micro-computed tomography was performed to track the zygomatic bone morphology, and specimens were histologically examined for osteogenesis and remodeling. In the TCP group, no bone formation was observed at 1 month, but it was observed at 6 months. Bone formation was observed in the BMP group at 1 month, and β-TCP absorption reproducing the zygomatic bone morphology was observed at 6 months. This honeycomb β-TCP with BMP-2 may provide appropriate remodeling that reproduces good bone formation in the early stage and good morphology in the long term, offering an alternative bone reconstruction material to vascularized bone grafts.

Original languageEnglish
Article number5374
Pages (from-to)1-14
Number of pages14
Issue number23
Publication statusPublished - Dec 1 2020


  • Bioceramic
  • Bone remodeling
  • Bone tissue regeneration
  • Honeycomb β-TCP
  • Reproduction of morphology

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics


Dive into the research topics of 'Long-term effect of honeycomb β-tricalcium phosphate on zygomatic bone regeneration in rats'. Together they form a unique fingerprint.

Cite this