Variation of the bone forming ability with the physicochemical properties of calcium phosphate bone substitutes

Rongquan Duan, Davide Barbieri, Xiaoman Luo, Jie Weng, Chongyun Bao, Joost D. De Bruijn, Huipin Yuan* (Corresponding Author)

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

11 Citations (Scopus)

Abstract

Because of their bioactive properties and chemical similarity to the inorganic component of bone, calcium phosphate (CaP) materials are widely used for bone regeneration. Six commercially available CaP bone substitutes (Bio-Oss, Actifuse, Bi-Ostetic, MBCP, Vitoss and chronOs) as well as two tricalcium phosphate (TCP) ceramics with either a micron-scale (TCP-B) or submicron-scale (TCP-S) surface structure are characterized and their bone forming potential is evaluated in a canine ectopic implantation model. After 12 weeks of implantation in the paraspinal muscle of four beagles, sporadic bone (0.1 ± 0.1%) is observed in two Actifuse implants (2/4), limited bone (2.1 ± 1.4%) in four MBCP implants (4/4) and abundant bone (21.6 ± 4.5%) is formed in all TCP-S implants (4/4). Bone is not observed in any of the Bio-Oss, Bi-Ostetic, Vitoss, chronOs and TCP-B implants (0/4). When correlating the bone forming potential with the physicochemical properties of each material, we observe that the physical characteristics (e.g. grain size and micropore size at the submicron scale) might be the dominant trigger of material directed bone formation via specific mechanotransduction, instead of protein adsorption, surface mineralization and calcium ion release.

Original languageEnglish
Pages (from-to)136-145
Number of pages10
JournalBiomaterials Science
Volume6
Issue number1
DOIs
Publication statusPublished - 1 Jan 2018

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