Fig. 4From: Effects of crown-to-implant ratio on marginal bone level and bone density in non-splinted single implants: a cross-sectional studyBone density measurement. A1-2 = apical area; M1-2 = middle area; C1 = control area at the center of the abutment interface; C2 = control area next to the tip of the abutment interfaceBack to article page