Dene opened his laboratory in 1974 in Renton, Washington. By 1984, the energy of excellence had taken hold and he began the foundation of what was to become a "career of total passion." During the 1980's, Dene presented cavo surface and bonding courses for dentists along the west coast. By the early 1990's, he established his service with clients such as, Dr. John Kois and Dr. Frank Spear. Dene currently co-manages LeBeau Dental while doing patent design and product development.