Veneers cover the front tooth surface while leaving the rest of the authentic tooth unaltered structurally. A crown process can also alter the appearance of teeth. The primary difference is that crowns are used if there is considerable damage (such as wear, decay, or root canal) or when other restorations, such as a large filling, are inadequate. On the other hand, veneers are commonly used for aesthetic purposes, covering small chips, cracks, discoloration, and other superficial imperfections.