© 2019 Cumhuriyet Dental Journal.Objectives: The objective of this study is to compare the characteristics of the concept of platform-switched implants (PSW) that have recently emerged in implant dentistry and its effects on the marginal bone loss (MBL) around the implant with platform-matched implants (PMI). Data: In the study, PSW implant-abutment connection system, MBL, and peri-implant hard and soft tissue changes were examined. The research terms used in the study are dental implant, platform switching concept, switched platform, platform mismatch, platform-matched implants, and dental implant-abutment design. Sources: In the electronic research, the language was selected as English and studies conducted until March 2018 were investigated without year limitation. The electronic studies include the National Library of Medicine, PubMed/Medline, Web of Science, Cochrane Oral Health Group Trials, and Cochrane Central Register of Controlled Trials. Study selection: Studies, retrospective or prospective clinical human studies, either randomized systematic review and meta-analyses, and finite element analyses (FEA) were examined. Case reports and studies of animal experiments were excluded from the review. Conclusions: It was observed that clinical trials consisted of short and medium-term follow-ups and biomechanical studies were limited. It was observed that PSW implant systems obtain positive results in reducing the MBL and are more aesthetic in terms of soft tissue formation compared to PMI systems, and interest has been gradually increasing in the PSW system in recent years. It was revealed that long-term clinical trials for the PSW system are required.