What are Dental Veneers. Dental Veneers or Porcelain Laminates are wafer-thin shells that are custom made to cover the from surface of your teeth. dental veneers or porcelain laminates help to change the color, shape, size or length of your tooth. Dental veneers offer a conservative approach to changing a tooth’s color or shape compared to crowns, but the process is not reversible and can be costly.