Influence of Material Selection on the Marginal Accuracy of CAD/CAM-Fabricated Metal- and All-Ceramic Single Crown Copings

Figure 4

Definition of the cervical marginal gap (according to Holmes et al. 1989): A = internal gap; B = marginal gap (measured in the current study); C = overextended margin; D = underextended margin; E = vertical marginal discrepancy; F = horizontal marginal discrepancy; G = absolute marginal discrepancy.