This prospective comparative study aimed to determine the influence of the implant placement type (subcrestal or equicrestal) on bone level changes in platform-switched implants placed in sites with vertically thin gingiva (<3 mm) and restored with screw-retained or cement-retained restorations. Moreover, the effect of vertical gingival thickness on peri—implant bone loss was analyzed. The clinical significance of the study’s conclusions is in determining a modality of implant placement efficient in preserving stable crestal bone
