Abstract
The influence of load keeping time on 1kgf Vickers hardness(VHN)was tested using bovine mandibular bone, VHN was influenced by the length of load keeping time.Cubic specimens of bovine mandibular bone and bovine dentin were prepared and tested for Vickers hardness and compressive properties in three directions:mesio-distal, upper-lower and bucco-lingual directions.From the results of the test, it was possible to calculate VHN, proportional limit and modulus of elasticity of bovine mandibular bone and bovine dentin.A correlation was observed particularly between VHN and modulus of elasticity in the mesio-distal direction.Hardness and compressive properties of bovine mandibular bone differed according to the directions.Heterogenity on VHN and compressive properties of bovine mandibular bone were analysed quantitatively.
