Association Between Restorative Emergence Profiles and Peri-implant Bone Loss in Different Implant Systems:

oral radiographs taken with the paralleling technique and film holders at 1- and 3-years post-prosthesis insertion with an X-ray apparatus equipped with a long cone and a Rinn Universal Collimator (Dentsply RINN, York, PA, USA). All radiographs were stored on a PC and analyzed with the software program DBSWIN software. Each radiograph was calibrated using the implant diameter and length as reference measures to correct any distortion before measurement. An image processing program was employed to quantify peri-implant MBL, the EA, EP.