Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
Variation in structure and properties of a non-dispersive TTCP/DCPA-derived CPC immersed in Hanks' solution
Ist Teil von
Journal of oral rehabilitation, 2007-07, Vol.34 (7), p.541-551
Ort / Verlag
Oxford, UK: Blackwell Publishing Ltd
Erscheinungsjahr
2007
Link zum Volltext
Quelle
Wiley-Blackwell Journals
Beschreibungen/Notizen
summary The present work is to characterize a non‐dispersive, fast‐setting and high‐strength tetra calcium phosphate (TTCP)/dicalcium phosphate anhydrous (DCPA)‐based calcium phosphate cement (nd‐CPC) recently developed in the authors’ laboratory. Comparison between this CPC and a conventional TTCP/DCPA‐based CPC (c‐CPC) is made. The results show that, during setting c‐CPC reaches its pH plateau after 10 min, while nd‐CPC approaches plateau after 20 min. During immersion in Hanks’ solution the pH values of both cements reach their maxima after immersion for a few days, then decline eventually to near neutrality. With immersion time TTCP and DCPA phases gradually dissolve and apatite phase precipitates. The nd‐CPC has a higher apatite formation rate and denser structure than c‐CPC under similar conditions, especially at early stage. The nd‐CPC also demonstrates higher strength both during setting and after immersion.