Welcome to the office of Andrew G. Mortensen, DDS! Dr. Mortensen has proudly served Costa Mesa, Huntington Beach, Fountain Valley, CA, and all of Orange County for many years. At our dental practice, we emphasize cosmetic dentistry and are dedicated to designing dazzling, healthy smiles for our patients. We combine state-of-the-art technology, modern materials, and dental expertise to improve your smile easily, comfortably, and, often, permanently. You'll be amazed at what we can do.