Zirconia is a non-metallic biocompatible material that has been used in medicine for almost forty years. Its wide use in dentistry is relatively recent and is due to its biological and mechanical properties, making it a valid alternative on a clinical and cost competitive level.This ceramic has a high straight flexural tensile strength (900-1200 MPa), a lower degree of hardness than alumina (1200 Vickers versus almost 1600) but still sufficiently good, and a Weibull modulus of 10-12. Thanks to its marked osteoconductivity, it produces a tissue phlogistic reaction inferior to that of titanium. This means that in the healing site of a titanium implant the inflammatory factors and the phlogistic infiltrate are more represented than in that of a zirconia implant, without affecting the correct osseointegration.