Abstract A cellular automata model has been developed to study the sintering behavior of ceramic particles. In this model, only physical rule that drives evolution system is reduce energy at interface between mass cells and void cells. The meaning several computational parameters, such as particle size or temperature, were investigated. Experiments partial spherical particles silica performed i...

background : in anterior endodontically treated teeth a better esthetic can be achieved by using all-ceramic post -core restorations instead of metal post systems. maximum retention and fracture resistance of the post are the criteria upon which selection of a post system is based. the aim of this study was to evaluate the fracture resistance and retention of two all-ceramic post and core syste...