Balmer M, et al. - This prospective multicenter study was performed to assess clinically and radiographically the outcome of zirconia oral implants after 3 years in function. The examined one-piece zirconia implant indicated a high survival rate and a low marginal bone loss, after 3 years in function. As per the outcomes, the implant system was successful for single-tooth replacement and three-unit fixed dental prosthesis (FDPs).