Purpose:The aim of the present study was to evaluate and compare the marginal bone level changes around dental implants based on radiological examination by Radiovisiography and Cone beam computed tomography Materials and Method: For this in-vivo study, total of 14 implants were replaced in the edentulous area within the mouth randomly categorized under two groups which differ in evaluation method based on RVG and CBCT ..Group 1(n=7) Patients in which marginal bone loss was evaluated using RVG at baseline 3, 6 months interval . Group 2 (n=7) Patients in which marginal bone loss was evaluated using CBCT at baseline 3, 6 months interval Result: At the 3 months time interval the mean bone loss in the RVG was 0.155 and 0.672 in the CBCT on the mesial side The intergroup comparison of bone loss between RVG and CBCT was statistically significant when analyzed using Independent t test (p=0.001).At the 6 months time interval the mean bone loss in the RVG was 0.304 and 1.396 in the CBCT on the mesial side The intergroup comparison of bone loss between RVG and CBCT was statistically significant when analyzed using Independent t test (p=0.001) Conclusion: To conclude, though CBCT and RVG both are reliable tool for evaluation of marginal bone loss ,the intergroup comparison showed in the result states the accuracy of CBCT as compared to RVG during the follow up time of the present study.