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Dual‐Setting Calcium Phosphate Cement Modified with Ammonium Polyacrylate by Luís Alberto Dos Santos; Raúl García Carrodeguas; Anselmo Ortega Boschi; Antônio Celso De Arruda is a Medicine article available to read on EtoBox.

What is Dual‐Setting Calcium Phosphate Cement Modified with Ammonium Polyacrylate about?

**Abstract:** α‐Tricalcium phosphate bone cement, as formerly designed and developed by Driessens et al., consists of a powder composed by α‐tricalcium phosphate (α‐TCP) and hydroxyapatite (HA) seeds, and an aqueous solution of Na~2~HPO~4~ as mixing liquid. After mixing powder and liquid, α‐TCP dissolves into the liquid and calcium deficient hydroxyapatite (CDHA), more insoluble than the former, precipitates as an entanglement of crystals, which causes the setting and hardening of the cement. α‐TCP bone cement offers several advantages in comparison to calcium phosphate bioceramics and acrylic bone cements as bone graft and repairing material, like perfect adaptability to the defect size and shape, osteotransductibility, and absence of thermal effect during setting. The main handicap is its low mechanical strength. Therefore, approaching its mechanical strength to that of human bone could considerably extend its applications. In the present work, an in situ polymerization system based on acrylamide (AA) and ammonium polyacrylate (PA) as liquid reducer was added to α‐TCP cement to increase its mechanical strength. The results showed that the addition of 20 wt% of acrylamide and 1 wt

Who reads Dual‐Setting Calcium Phosphate Cement Modified with Ammonium Polyacrylate?

Author

Luís Alberto Dos Santos; Raúl García Carrodeguas; Anselmo Ortega Boschi; Antônio Celso De Arruda

Publisher

John Wiley and Sons; Wiley (Blackwell Publishing); Blackwell Publishing Inc.; Wiley (ISSN 0160-564X)

Published

2003

Language

EN

Field

Medicine (Health Sciences)