Some patients will ask me “why doesn’t this look right?” I’ll visit with them that it is not uncommon for this to happen. In nature, like many things, teeth are symmetrical. Symmetry in tooth size, shape, and color is what gives us a pleasing smile. Nothing was done wrong in this picture expect for the use of dis-similar material to close the patients space between his front teeth. My recommendation to this patient was to use similar materials with one common color to give him a natural, pleasing smile.