Comparative study of the direct-lift and platinum foil techniques in the marginal discrepancy of collarless metal ceramic restorations.

This study was carried out to evaluate the marginal discrepancy of collarless metal ceramic restorations, using a combination of three different techniques to manufacture the porcelain butt margin with two brands of body porcelain. Statistical analysis showed no significant difference between the techniques or brands of body porcelain used in this study.