Results showed that two types of cements could be used in which dried or calcined HAp represents the CPC constituent of the cement, and that the addition of 20 – 30 % by weight of ZnO showed enhanced properties compared to ZnO-free cements. The physical, structural, mechanical, and biological performance of this cement has been evaluated. The current study deals with the development of a novel cement comprising CPC with polyacrylic acid (PAA) in addition to ZnO as an accelerator. The addition of a ductile ingredient, such as biocompatible polymers, has been suggested as a reasonable avenue to solve these problems. Similar to ceramic materials, CPCs have the disadvantage of being brittle, which limits their applications to non-load bearing applications.
The end-product of a set CPC is normally a hydroxyapatite (Ca 10(PO 4) 6(OH) 2 HAp), which has structural and morphological similarity to the mineral part in these hard tissues. 4, Pages 227-236 DOI: 10.4416/JCST2011-00022 AbstractĬalcium phosphate cements (CPCs) have been clinically used for the past fifteen years in different hard-tissue-related applications. Received July 2, 2011, received in revised form August 12, 2011, accepted August 26, 2011 El Deftar 5ġ Department of Chemistry, Faculty of Science, United Arab Emirates University, Al Ain, United Arab Emirates 2 Department of Chemistry, Faculty of Science, Jazan University, Saudi Arabia 3 Biomaterials Department, Faculty of Oral and Dental Medicine, Cairo University, Cairo, Egypt 4 Biomaterials Department, Misr International University, Cairo, Egypt 5 Tissue Culture and Cytogenetics Unit, National Cancer Institute, Cairo University, Cairo, Egypt Development of Novel ZnO-Doped Hydroxyapatite Polycarboxylate Dental Cement