Custom Smile Design River Crossing Dental works with each patient on an individual basis to design their perfect smile. We will consider your current situation and your final goals to create your own personal smile. A Smile Design is truly a work of art. The term Smile Design applies to the enhancement of a smile using a combination of methods. A client’s eyes, lip line, coloring, gum tissue contouring, and face, are all considered when a new smile is designed for you.