The Effect of Different Fabrication Steps on the Marginal Adaptation of Two Types of Glass‐Infiltrated Ceramic Crown Copings Fabricated by CAD/CAM Technology

Abstract

There was no significant difference in the marginal adaptation of both material copings. After the trimming process, the glass infiltration firing cycle improved the vertical marginal discrepancy for both IZ and IA copings. Clinical implications. IA and IZ copings fabricated by CAD/CAM technology have an acceptable marginal fit as documented in the literature, and the glass infiltration process improves the marginal fit after machining.