The results of this study revealed nonsignificant increase in the mean bone height loss after 6, 12 and 18 months follow up period in group I and group II. There was a non-significant difference in the mean bone height loss between group I and group II at different follow up periods.
After one and a half years of implant retained and supported overdenture, clinical and radiographic data demonstrated that implants can be successfully placed in either alveolar ridges augmented with autogenous bone or ridge splitting with Bio-Gen and Biocollagen membrane. Also, this study exhibited peri-implant stability with high survival, healthy peri-implant tissue and the marginal bone ridge values were satisfactory around implants.
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