Comparative analysis of peri-implant marginal bone loss based on microthread location: a 1-year prospective study after loading.

Background: The purpose of the present study was to investigate the short-term effects of microthread location on peri-implant marginal bone levels.

Methods: Two types of implants, one with microthreads placed at the implant top (group A) and the other with microthreads placed 0.5 mm below the implant top (group B), were placed adjacent to each other in the partially edentulous areas of 20 patients.