Analysis of polycaprolactone scaffolds fabricated via precision extrusion deposition for control of craniofacial tissue mineralization.

Abstract:

OBJECTIVES:Recurrence of cranial bone fusion following surgical resection in craniosynostosis patients commonly requires additional surgical procedures. Surgical implantation of engineered 3D scaffolds that control tissue mineralization could be utilized to diminish recurrence of fusion. This study investigated the ability of composite scaffolds to control tissue mineralization when cultured in vitro. SETTING AND SAMPLE POPULATION:Precision-engineered scaffolds with calvarial cells were cultured in vitro at the Department of Orthodontics and Pediatric Dentistry, University of Michigan. MATERIAL & METHODS:Polycaprolactone (PCL) scaffolds were fabricated using a novel precision extrusion deposition technique. Polyethylene glycol (PEG) hydrogel was coated onto select scaffolds to inhibit mineralization. MC3T3E1(C4) calvarial cells were cultured with scaffolds in media containing ascorbate and phosphate to promote osteoblast differentiation and mineralization. Scaffolds were assayed for osteoblast differentiation by alkaline phosphatase assay. Scaffolds were assayed for mineralization by nano-computed tomography (nano-CT) and by von Kossa staining of histologic sections. RESULTS:MC3T3E1(C4) cells differentiated into osteoblasts and formed mineral when cultured on uncoated PCL scaffolds. MC3T3E1(C4) cells were significantly diminished in their ability to differentiate into osteoblasts when cultured on hydrogel-coated scaffold. CONCLUSION:Results of this study indicate that this novel printing technology can be used to fabricate 3D scaffolds to promote and inhibit tissue mineralization in a region-specific manner. Future studies are needed to establish utility of such scaffolds in vivo.

journal_name

Orthod Craniofac Res

authors

Fedore CW,Tse LYL,Nam HK,Barton KL,Hatch NE

doi

10.1111/ocr.12159

subject

Has Abstract

pub_date

2017-06-01 00:00:00

pages

12-17

eissn

1601-6335

issn

1601-6343

journal_volume

20 Suppl 1

pub_type

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