Mechanical Characterizations of a Biodegradable Hydraulic Cement

Objectives:The aim of the study was to develop a pre-set material

Methods:the materials contain two phases, by adding monocalcium phosphate monohydrate (MCPM) with calcium carbonate (CaCO3) then mixing with calcium sulphate hemihydrate (CSH) with diluted distal water (DDW) as an aqueous solution. This mixture was referred to as CPHC/CSD-1. The mechanical properties (compressive strength, size of pores, density, porosity, dissolution etc.) of the materials in different ratios were tested to find out an optimal formula in clinical application.

Results:According to the results of various tests, the sample with 100/0 ratio lacks of CSD, the resorbable phase. The sample with 0/100 ratio lacks of HA, the apatitic phase. The sample with 30/70 has the lowest compressive strength if compared with other samples. The hydration reaction of sample with 70/30 ratio is less complete if compared with the sample with 50/50 ratio.

Conclusions:The sample with 50/50 ratio underwent the most complete hydrated reaction and produce HA and CSD adequately. Therefore, we assumed that the 50/50 formula can be the most useful candidate for clinical application of bone defect healing.