Radiographs were studied by changing parameters in black and white modus as well as in colour look-up tables. Measurements from a well defined reference point at the coronal part of the implant body taken at baseline and 6-months visits were: vertical defect depth and width, marginal bone level and horizontal bone level. Based on these measurements, changes in vertical defect depth, marginal bone level, % defect fill and % defect resolution from baseline to 6 month were calculated.