Gap comparison between single crown and three-unit bridge zirconia substructures.

Purpose: To compare marginal and internal gaps of zirconia substructure of single crowns with those of three-unit fixed dental prostheses.

Materials And Methods: Standardized Co-Cr alloy simulated second premolar and second molar abutments were fabricated and subsequently duplicated into type-III dental stone for working casts. After that, all zirconia substructures were made using Lava™ system.