Background & Aim: Implant treatment is highly popular as prosthetic replacement option for various clinical situations. However, clinical implant failures are also unavoidable events which need immediate attention. This study was conducted to evaluate post surgical complication associated success/failure in patients treated with ball and bar Supported Implant Overdentures. Materials and Methods: The data collected from the clinical document record archives of department for implant over-denture patients with bar and ball attachments. Total 30 patients have been selected by systematic sampling procedure. Two study groups were having 15 patients each. Group 1 patients had received bar supported implant overdentures. Group 2 patients received ball supported implant overdentures. Post operative complications have been screened in their recall periods at an interval of 3 months, 6 months and 9 months. Record of failure or success status was noted in the different time periods in recall visits. Statistical analysis was done by software and inferences were recognized accordingly. Statistical Analysis & Results: Total 30 patients were included in the study with 18 male and 12 females in the age range of 45 to 65 years. For Group 1, in 3 month post operative follow up period 13 out of 15 implants were declared successful. P value was highly significant here. In 9 month post operative follow up period, 10 out of 15 implants were declared successful. For Group 2, in 3 month post operative follow up period 14 out of 15 implants were declared successful. In 6 month post operative follow up period, 13 out of 15 implants were declared successful. In 9 month post operative follow up period, 11 out of 15 implants were declared successful. One-way ANOVA assessments for between groups, within groups and cumulative were done. P value was significant here (0.001). Conclusion: Authors concluded that post operative complications are apparently unavoidable in implant therapies. In our study, ball supported implant over-dentures showed slight higher success rate compared to bar supported implant over-dentures. Additionally, there was a slight increase of failure rate with the increasing follow up timings.