Health focused dentistry (also known as natural, biological or holistic dentistry) in Groton, MA. Cosmetic Dentists G. Robert Evans, DMD, Jean M. Nordin-Evans, DDS, and Gilbert D. Carney, DMD offering Mercury-free dentistry, Metal-free dentistry, homeopathy, amalgam removal, spa dentistry, massage, dental revision and treatment for root canal toxicity, chemical sensitivity and cavitation.