Evaluation of peri-implant soft and hard tissues behavior in screw-retained crowns by the biologically oriented preparation technique (BOPT): Ambispective longitudinal analytical study

Abstract

Clinical and radiographic evaluation of soft and hard tissues around convergent collar implants and shoulderless abutments. Ambispective longitudinal analytical study with 32 implants in 21 patients (Prama Implants group and Shelta+XA abutment group). Biologically guided crowns design seems to provide peri-implant hard and soft tissue stability.