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Abstract
To compare the marginal adaptation of monolithic high-translucency zirconia crowns and porcelain-veneered zirconia crowns. A master die was scanned to design and produce 10 porcelain-veneered zirconia copings for layering (PVZ group) and 10 monolithic high-translucency zirconia crowns (HTZ group). The mean vertical marginal gap in both groups was measured from eight predetermined points using a digital microscope. The mean marginal gap in the PVZ group (39.62 ± 18.98 μm) was significantly higher than in the HTZ group (23.54 ± 7.57 μm) (P < .05). High-translucency monolithic zirconia crowns had better marginal fit than porcelain-veneered zirconia crowns. Both groups exhibited clinically acceptable marginal discrepancies.
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