Development of biphasic bone cement obtained from chicken eggshell

• Published in: Journal of materials research and technology Vol. 9; no. 4; pp. 7297 - 7304
• Main Authors: Zanelato, CB, Pires, AF, da Silva, SN, Galdino, AGS
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.07.2020; Elsevier
• Subjects: Biomaterials; bone cement; chicken eggshells; hydroxyapatite; bone cement; hydroxyapatite; chicken eggshells; Biomaterials
• ISSN: 2238-7854
• DOI: 10.1016/j.jmrt.2020.05.053

Chicken eggshells are rich in nutrients that enable applications ranging from the food industry to its use as a raw material for the manufacture of calcium phosphates for the biomedical industry. In this context, calcium phosphates are widely used as bone cement, which is a biomaterial used in the treatment of orthopedic traumas and dental diseases. However, the main source of calcium phosphates are limestone deposits, which is a finite natural resource. Thus, the objective of this work was to obtain a biphasic calcium phosphate biochemistry (HAp + DCPA) from chicken eggshells. The calcium phosphate powder was obtained according to Oliveira patent (2017), from the calcination of chicken eggshell. The obtained calcium phosphate was characterized by XRD and SEM. To obtain the cement paste, water was used as the liquid phase by varying the liquid: powder ratio to 1.0 and 1.1 ml.g-1, Na2HPO4 as reaction accelerator (RA) at 2.5% and 5.0 % by weight, and CMC (carboxymethyl cellulose) as an additive to the mixture at a mass ratio varying from 1.6% to 3.2%. Properties of setting time, compressive strength, and apparent porosity were evaluated in the bone cement and compared to commercial cement.