Jayaraman, SrinivasanMallan, SreekanthRajan, BabuAnachaperumal, Murugan Pazhaniappan2013-05-202013-05-202012-11Jayaraman Srinivasan, Mallan Sreekanth, Rajan Babu, Anachaperumal Murugan Pazhaniappan. Three-dimensional finite element analysis of immediate loading mini over denture implants with and without acrylonitrile O-ring. Indian Journal of Dental Research. 2012 Nov-Dec; 23(6): 840-841.http://imsear.searo.who.int/handle/123456789/146806Aim of the study : The aim of the study was to check the stress absorbed by the bone around mini over-denture dental implant with and without acrylonitrile O-ring under two different loading conditions. The initial stress absorbed by the implant plays a significant role in the success of the immediate loading implants. Materials and Methods: A three-dimensional finite element analysis using Pro-E mechanica finite element software was used to check the stress absorbed by the bone with and without acrylonitrile O-ring. The implant and the mandible where modeled from the data obtained from C.T. scan and optical projector using reverse engineering process. Two different loading conditions of 80 N and 220 N were determined and the analysis was done. Results: The result showed at lower loads (80 N), there was not much difference in the stress absorbed by the cancellous bone with or without acrylonitrile O-ring, but at higher loads (220), there was difference in the stress absorbed by the cancellous bone with (0.03508 Mpa) and without acrylonitrile O-ring (3.874 Mpa) which showed that significant stress was absorbed by the acrylonitrile O- ring. Conclusion: This study proves that higher loads during parafunctional movement were absorbed by the acrylonitrile O-ring increasing the success of the implants.enAcrylonitrile O-ringfinite element analysismini dental implantArticle