The objective of this study was to evaluate the effect of combining implant and abutment materials on wear and particle release in a dynamical loading setup.

The purpose of the study was to investigate the effect of ceramic surface pretreatment, effect of resin cement and dentin surface roughness on shear bond strength.

To evaluate debonding mechanism of zirconia and lithium disilicate cemented to dentin mimicking what could occur in a clinical setting. A null hypothesis of no difference in tensile bond strength between groups of zirconia and lithium disilicate cemented with resin cements was also tested.

Different dental ceramics available today including a classification, mechanical properties and a description of processing techniques with emphasis on the zirconia materials.