Background: The present study was conducted to assess risk factors associated with dental implants. Materials & Methods: The present study was conducted on 760 patients having 1040 dental implants. The causes of implant failure were recorded. Results: Out of 760 patients, 410 were males having 560 dental implants and 350 were females having 480 dental implants. Males had 68 dental implant failures and females had 52 dental implants failures. The difference was non-significant (P> 0.05). Out of 120 implant failures, 12 were seen in diabetic patients, 14 in smokers, 20 in periodontal diseases and 3 in bruxism. The difference was significant (P- 0.01). Maximum implant failures were seen in 50 patients with type IV bone, 40 in type III, 20 in type II and 10 in patients with type I bone. The difference was non- significant (P> 0.05). Conclusion: Dental implant failures were more common in type IV bone, in smokers and in patients with periodontitis. Key words: Bone quality, Dental implant, Smoker