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The Trend of Using Zirconia For Aesthetic Rehabilitation
Zirconia transformation Yttria-stabilized tetragonal zirconia polycrystal has been used as a dental biomaterial for several decades because the fracture toughness and bend strength are increased by a stress-induced transformation-toughening mechanism. Zirconia exhibits a tetragonal-to-monoclinic phase transformation on cooling, which is accompanied by a 3% to 5% volume increase. Several polycrystalline zirconia materials have been developed for dental applications,