Preparation and characterization of customized bone grafting hydroxyapatite models obtained by digital light processing 3D printing

• Type: Article in International Scientific Journal
• Date: 2022

Authors

M. I. Martins (Author) Other; M. A. Rodrigues (Author) Other; Maria Ascensão Lopes (Author) FEUP; José Domingos Santos (Author) FEUP

Journal

Title: Journal of Materials Research

Vol. Volume 37 No. 3

Pages: 784-795

ISSN: 0884-2914

Publisher: Springer Nature

Indexing

ISI Web of Knowledge - 0 Citations

Scopus - 0 Citations

Other information

Authenticus ID: P-00W-141

DOI: 10.1557/s43578-021-00481-2

Abstract (EN): This work describes a precision printing procedure for personalized hydroxyapatite constructs fabricated by digital light processing technology that unlocks a feasible low-cost process to deliver patient-specific structures for bone grafting, namely in the maxillofacial area. The process was monitored, characterizing raw materials, printable suspensions, and the produced pieces by physicochemical and mechanical studies. Production of porous pieces from suspensions with a hydroxyapatite load up to 50 wt% was accomplished, with shrinkage of 60% after a two-step sintering process. The 3D printing process allowed for customized printed parts according to the anatomic site, reproducing porous and complex bone architecture and even simulating the shape of trabeculae, impossible to achieve by other fabrication techniques. Allying the well-established synthetic grafting alternatives to the additive manufacturing technology with adequate modelling skills, the ideal 3D structures could be engineered, enhancing bone regeneration through this optimized 3D architecture and further boosting the synthetic graft market potential.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 12