Background: Dental implants are one of the most successful treatment choices for edentulous areas. The present study was conducted to assess dental implant failures. Materials & Methods: 78 patients who received 104 dental implants were included. Type of failure was recorded. Results: 48 males had 60 and 30 females had 44 dental implants. Common reason for dental implant failures was peri- implantitis in 4, mucositis in 2, screw fracture in 1, crown fracture in 1 and prosthetic base fracture in 2 cases. The difference was significant (P< 0.05). Conclusion: Common reason for dental implant failures was peri- implantitis, mucositis, screw fracture and crown fracture. Key words: crown fracture, dental implant, peri- implantitis