Volume 102, Issue 5 pp. 962-976
Original Report

Segmental mandibular bone reconstruction with a carbonate-substituted hydroxyapatite-coated modular endoprosthetic poly(ɛ-caprolactone) scaffold in Macaca fascicularis

Nattharee Chanchareonsook

Corresponding Author

Nattharee Chanchareonsook

Department of Oral and Maxillofacial Surgery, National Dental Centre, Singapore, Singapore

Correspondence to: N. Chanchareonsook (e-mail: [email protected])Search for more papers by this author
Henk Tideman

Henk Tideman

Department of Oral and Maxillofacial Surgery, Research advisor, National Dental Centre, Singapore, Singapore

Search for more papers by this author
Stephen E. Feinberg

Stephen E. Feinberg

Department of Oral and Maxillofacial Surgery, University of Michigan, Ann Arbor, Michigan

Department of Biomedical Engineering, College of Engineering, University of Michigan, Ann Arbor, Michigan

Search for more papers by this author
Leenaporn Jongpaiboonkit

Leenaporn Jongpaiboonkit

Tissue Regeneration Systems, Inc, Ann Arbor, Michigan

Search for more papers by this author
Shermin Lee

Shermin Lee

Department of Oral and Maxillofacial Surgery, National Dental Centre, Singapore, Singapore

Search for more papers by this author
Colleen Flanagan

Colleen Flanagan

Department of Biomedical Engineering, College of Engineering, University of Michigan, Ann Arbor, Michigan

Search for more papers by this author
Gita Krishnaswamy

Gita Krishnaswamy

Centre for Quantitative Medicine, Duke-NUS Graduate Medical School, Singapore, Singapore

Search for more papers by this author
John Jansen

John Jansen

Department of Biomaterials, Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands

Search for more papers by this author
First published: 21 November 2013
Citations: 18

Abstract

A bio-degradable scaffold incorporating osteoinductive factors is one of the alternative methods for achieving the regeneration of a mandibular bone defect. The current pilot study addressed such a bone reconstruction in a non-human primate model, Macaca fascicularis monkeys, with an engineered poly(ɛ-caprolactone) (PCL) scaffold, provided with a carbonate-substituted hydroxyapatite coating. The scaffolds were implanted into unilaterally created mandibular segmental defects in 24 monkeys. Three experimental groups were formed: (1) scaffolds with rhBMP-2 (n = 8), (2) scaffolds with autologous mixed bone marrow cells (n = 8), and (3) empty scaffolds as a control group (n = 8). Evaluation was based on clinical observation as well as micro-CT, mechanical, and histological analyses. Despite a high infection rate, the overall results showed that the currently designed PCL scaffolds had insufficient load-bearing capability, and complete bone union was not achieved after 6 months of implantation. Nevertheless, the group of PCL scaffolds loaded with rhBMP-2 showed evidence of bone-regenerative potential, in contrast to PCL with autologous mixed bone marrow cells and the control group. © 2013 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 102B: 962–976, 2014.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.