Table 5: Success rate of the 271 implants examined at the 5-year follow-up with regard to peri-implant bone loss according to our success criteria, based on the criteria defined in the 2017 World Workshop on the Classification of Periodontal and Peri-Implant Diseases and Conditions [21]. The treatment success in our study was defined for a peri-implant bone resorption ≤2 mm.