Dental implants are used to replace teeth lost due to decay, trauma or periodontal diseases. The most common design for dental implants involves three different unit, a root (or implant) in direct contact with the bone, an abutment across the gingiva and a crown that bears the chewing loads and provides natural appearance to the implant. Titanium and its alloys are widely used to manufacture implants and abutments due to their low density, excellent biocompatibility, mechanical properties and corrosion resistance. However, titanium abutments can change the appearance of soft tissues, thereby compromising aesthetics. To overcome this limitation, dental implants abutment are usually made of ceramic zirconia because of its white appearance, high strength and biocompatibility.