This study investigated the fractographic characterization of 3D-printed alumina (Al2O3) ceramics for bio-inspired dental implants. Alumina's high strength, wear resistance, and biocompatibility make it ideal for dental applications. The lithography-based ceramic manufacturing (LCM) technique was employed to produce 3D-printed specimens. Specimens were sintered in a high-temperature chamber furnace (LHTCT) at 1650 °C for 4 h in air to enhance density and mechanical strength. Four specimens were tested under uniaxial compression using a 100 kN Instron 8801 Servo-Hydraulic testing machine at a strain rate of 0.5 mm/min until failure, according to ASTM C1424-15R19 standard. A Zeiss Gemini Crossbeam scanning electron microscopy (SEM) machine analyzed the samples fractured surfaces, revealing longitudinal and transverse cracks, as well as fracture modes. With an SEM at 15 kV and magnifications ranging from 12x to 1,000,000x, it was clear that longitudinal cracks ran along the direction of loading, while transverse cracks occurred at stress concentration points. Voids measuring from 13.65 to 137.4 µm were observed, acting as stress concentrators. The findings demonstrate that the compressive strength of 3D-printed alumina (Al2O3) meets dental implant requirements. However, optimization of the printing process is needed to reduce voids and improve fracture resistance. These findings offer valuable insights into the fracture mechanisms of 3D-printed alumina ceramics for dental implants.