▎ 摘　　要

NOVELTY - Endosseous ceramic dental implant comprises hollow cylindrical section extending through length of dental implant of major diameter which encompasses combination of implant geometry features characterized by integrated abutment-collar-implant body design, conical shaped implant geometry, crest module, micro-rings region, uniform and progressive ACME screw thread profile with thread pitch, width and depth and dome in apical region of dental implant. USE - Endosseous ceramic dental implant. ADVANTAGE - The endosseous ceramic dental implant facilitates optimum density, strength, and surface roughness. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for fabricating dental implant, which involves: (A) mixing and of nano-scale Yttria-stabilised tetragonal zirconia polycrystalline bio-ceramic powders with organic binder; (B) drying granules at suitable temperature for sufficient time, grounding and sieving to obtain uniform spherical granules; (C) uni-axial-pressing of binder coated spherical zirconia granules in tailor-made high carbon steel mold design incorporating negative impression of ACME shaped thread profile which facilitates fabrication of hollow dental implant; and (D) performing dual-stage thermal treatment including pre-sintering at lower temperature of about 800-1450 degrees C for sufficient time followed by high-temperature sintering at 1500-1750 degrees C for sufficient time facilitating better sinter density (~90%), porosity (1-10%), microstructure (0.5-1 micrometer), toughness (9 MPa.vm), hardness (12-14 GPa) and optimum surface roughness Ra=(0.8 micrometer), where mold is lubricated to facilitate easier demoulding of pressed dental screw for obtaining defect-free green specimen.