One of the latest breakthroughs in San Diego cosmetic dentistry is prepless veneers. San Diego prepless veneers are a less-invasive procedure for transforming San Diego smiles. New Marcos Ortega DDS prepless veneers are incredibly thin shells which adhere to the face of teeth and require no removal of tooth enamel. Most San Diego prepless veneers are about the thickness of two pieces of paper. Because the color is built into the veneers (instead of being applied after fabrication), they look like your natural teeth–only better!