The results obtained in this BI 6015 work suggest that microwave sintering, in some cases, results in better mechanical properties in terms of fracture toughness than conventional sintering. It has also been established that the TOSOH material had the highest Hv and KIC values, as well as that of relative density and the least variation in average particle size when sintered at lower temperatures. This result is a consequence of the rheological study that has been previously carried out that allows for a more homogeneous starting powder free of aggregates, emphasizing the importance of the raw material. This has a direct effect on the final properties of sintered materials. The resulting microstructure for all samples could be compared in terms of particle size. Smaller grain sizes were obtained for MW-sintered samples than for CS samples in all materials.
Overall, microwave sintering is a very good alternative for sintering and consolidating Y-TZP commercial materials for dental applications due to the resulting finer microstructure, enhanced mechanical properties and reduction in processing times and energy consumption.