![]() As a result, it preserves natural tooth structure and ultimately decreases the incidence of loss of vitality complications in young patients. Since IPS e.max CAD can be milled as thin as 1 mm, it is indicated for cases with limited space and is considered to require a minimally invasive tooth preparation. 3 Low translucency LDGC material (IPS e.max CAD LT Ivoclar Vivadent, Schaan, Liechtenstein) was found to be significantly more translucent than zirconia at thicknesses of 0.5 and 1.0 mm. 1, 2 The material is available in a complete range of shades and in three different levels of translucency (high translucency, medium opacity, and low translucency) for optimum color matching. Currently, it has become one of the most commonly used glass-ceramic materials for single crowns due to its excellent esthetic and mechanical properties. In 2006, computer-aided design-computer aided manufacturing (CAD-CAM) lithium disilicate glass-ceramic (LDGC) crowns (IPS e.max CAD Ivoclar Vivadent, Schaan, Liechtenstein) became commercially available. Glass-ceramic materials with high translucency have been developed to overcome the esthetic challenges of metal-based crowns and to satisfy patients’ demands.
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