Now in his 25th year in practice in Springfield, Dr. David Peck continues with his popular veneer and smile makeover services. He also offers titanium-based implants for permanent tooth replacement (an alternative to removable dentures). Dr. Peck's office in Springfield also just added a 3D X-ray machine that can view patients' jaws in slices, like a CAT scan, but, Peck explains, "with dramatically less radiation."