INTRODUCTION
fracture, porcelain, tooth
Preservation of tooth structure and prevention of needless tooth structure removal are basic and important principles in prosthodontics. Striving to achieve the cosmetic aspect is also a basic requirement, especially in the modern world. Veneers can satisfy both of the aforementioned requirements, for they are considered conservative, esthetic, and functional prosthetic options (Cardoso & Decurcio, One of the most widely used types of dental ceramics in manufacturing veneers is glass ceramic (Fu et al., One study indicates that lithium disilicate glass‐reinforced porcelain is less abrasive to opposite natural teeth, but more susceptible to wear than feldspar porcelain and glass reinforced with fluorapatite crystals. It displays higher elasticity compared to glass reinforced with fluorapatite crystals followed by feldspar porcelain and glass‐reinforced porcelain with Lucite crystals (Zhang et al., As a result of the new development in zirconia and its structure and manufacturing methods, obtaining more translucent zirconia has proven feasible compared to the old generations, with improved phases of cosmetics. Such development made possible the use of zirconia in cosmetic areas with the help of external dyes and colorings to achieve color similarity to the adjacent natural teeth. This type of ceramic provides very acceptable esthetic outcomes in manufacturing veneers; experimentally, it reduces the risk of veneer fracture during clinical functioning (Borba et al., Our current investigation, henceforth, aims at comparing glass reinforced with crystals of lithium disilicate, 