Masking Ability of Monolithic and Layered Zirconia Crowns on Discolored Substrates.

There is scarce information on the colorimetric behavior of monolithic and layered zirconia crowns in combination with various abutment colors. This study evaluated the masking ability on discolored substrates of monolithic and layered zirconia crowns. Anterior crowns were fabricated using 3Y-TZP zirconia and layering ceramic and divided into three groups: monolithic (ML), bi-layer (BL), and tri-layer (TL).

Influence of manufacturing technique on the color of zirconia restorations: Monolithic versus layered crowns.

Objectives: The study aimed to compare the color of monolithic and layered zirconia crowns fabricated using different brands in the cervical, middle, and incisal areas.

Materials And Methods: A total of 45 crowns were fabricated from three brands (Katana, Nacera, Cercon) using three methods (monolithic = ML (n=5), cut-back + enamel = BL (n=5), cut-back + dentin + enamel = TL (n=5)). CIE L*, a* b*, C*, h° color coordinates were recorded with a dental spectrophotometer in cervical, middle, and incisal areas.

Color and masking properties of translucent monolithic zirconia before and after glazing.

Purpose 1. to assess the ability of four brands of translucent monolithic zirconia with different thicknesses to mask discolored substrates; 2. to assess the influence of glazing upon their color coordinates and masking properties.

Effect of glazing on translucency, color, and surface roughness of monolithic zirconia materials.

Objectives: To assess the effect of material, thickness and glazing upon the color, translucency, and roughness of monolithic zirconia.

Materials And Methods: Sixty discs (0.8, 1.

Translucency and masking properties of two ceramic materials for heat-press technology.

Objectives: To assess the translucency of two pressable ceramics and to analyze their masking property when placed on different tooth-shaded backgrounds.

Materials And Methods: Thirty discs (1-mm thickness) were fabricated using two pressable ceramics (shade/translucency): 1M1T/HT, 1M2T/HT, 2M2T (VITA PM9), and A1LT/HT, B1LT/HT, A2LT (e.max Press).