IADR Abstract Archives

The Physical Properties of CPP-ACP-modified Calcium Silicate-based Cements

Objective: To evaluate the mechanical and handling properties of casein phosphopeptide-amorphous calcium phosphate (CPP-ACP)-modified calcium silicate-based cements and to compare the properties of a GC trial MTA (GCMTA) with commercially available calcium silicate-based cements (Biodentine® and Angelus®MTA).

Method: Various amounts of CPP-ACP (0.5%, 1%, 2% and 3% w/w) were added to each test material. Setting times and compressive strengths were determined according to the ISO 9917-1 standard. Solubility was evaluated using the American Dental Association specification #8, and the Vickers surface microhardness (HV) was also measured. The data were analysed by one way analysis of variance followed by Tukey’s test.  The level of significance was P < 0.05.

Result: The incorporation of 0.5% and 1% CPP-ACP into Biodentine® and 0.5% CPP-ACP into Angelus®MTA and GCMTA did not affect the cements’ physical properties except for increasing setting time. The incorporation of higher CPP-ACP concentrations into the test cements adversely affected the mechanical properties and increased the solubility in a concentration-dependant manner (P < 0.05). Biodentine® showed the shortest setting time and the highest compressive strength, surface microhardness and solubility amongst the test materials (P < 0.05). Angelus®MTA exhibited shorter setting time in comparison with GCMTA (P < 0.05) and the lowest solubility compared with Biodentine® and GCMTA (P < 0.05). The compressive strength and surface microhardness of Angelus®MTA and GCMTA were similar.

Conclusion: Low concentrations of CPP-ACP powder can be incorporated into calcium silicate-based cement without significantly compromising the mechanical properties and solubility of the modified cement. GCMTA showed similar mechanical properties to commercially available MTA.

Australian/New Zealand Division Meeting
2014 Australian/New Zealand Division Meeting (Brisbane, Australia)
Brisbane, Australia
2014

Scientific Groups
  • Dawood, Alaa  ( University of Melbourne, Melbourne, , Australia )
  • Manton, David  ( University of Melbourne, Melbourne, , Australia )
  • Parashos, Peter  ( University of Melbourne, Melbourne, , Australia )
  • Wong, Rebecca  ( University of Melbourne, Melbourne, , Australia )
  • Palamara, Joseph  ( University of Melbourne, Melbourne, , Australia )
  • Reynolds, Eric  ( University of Melbourne, Melbourne, , Australia )
    • Dental Materials