Aim: To evaluate and compare crestal bone loss in conventional abutments and platform switched abutments in implants placed in the oral cavityat 3, 6, and 9 months in 20 sites. Materials and methods: 20 sites requiring implant supported prosthesis were selected. For each implant, radiographs, (using radiovisiography);were evaluated for interproximal bone level changes from the abutment-fixture interface, arbitrarily taken as baseline level. The proximal distance between the interface and the most coronal aspect of the alveolar crest was measured at the mesial and distal aspects, at baseline and at intervals of 3, 6 and 9months. The difference between the bone loss from the initial and final radiographs for each implant was calculated for the total bone loss of that implant and was subjected to statistical analysis. Results: There was statistically significant difference in the bone loss between the two groups at 6 and 9 months. The platform switching group showing less bone loss as compared to the platform matched group (control group). Conclusion: This study concluded that platform switching resulted in lesser bone loss as compared to the platform matched group (control group) and can help preserve peri-implant bone peak better than the conventional implant restoration.
