One of the key positions to design when creating an occlusal scheme is edge to edge, or end to end as some people prefer to call it. The position of the maxillary incisal edge is always dictated by the face to create a pleasing esthetic result. With this in mind adjustments to the occlusion are made by altering the incisal edge position and shape of the lower anterior teeth. All incisal edges have three pieces. The pitch is that flat surface at the top of the incisal edge. Each incisor tooth has two bevels, a leading edge and a trailing edge.