Meet The Doctors

Alexandra H. Arnold, DMD

Dr. Arnold grew up in Lexington, Kentucky, and earned a Bachelor’s of Science in Chemistry at the University of Alabama, graduating summa cum laude. She earned her dental degree at the University of Kentucky, finishing with highest honors and awards in restorative dentistry, prosthodontics, and oral medicine. She completed an advanced post-doctoral training program in Augusta, Georgia, focusing on dental implants, sedation dentistry, and full-mouth rehabilitations. Before moving to the Vail Valley she practiced in Telluride, Lexington, and Boston. 

Dr. Arnold has a passion for patient-focused, exceptional dentistry. She is committed to staying on the cutting-edge of modern and esthetic dentistry, with an impressive Continuing Education resume focusing on Invisalign, minimally-invasive cosmetic dentistry and full-mouth rehabilitiations. She considers practicing in a mountain community a profound privilege, and believes this valley deserves the very best dental care possible. 

When not practicing dentistry, Dr. Arnold is skiing, biking, camping, or playing with her Boston Terrier named Georgie.

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Dr. Dorothy Distelhorst

Dr. Distelhorst graduated from Colby College in Waterville, Maine with majors in American Studies and German. During her senior year at Colby, she realized that as a dentist she was able to combine her love of working with her hands, science, and learning with a desire to help people with their health. She would also be continuing the family legacy as both her parents were dentists.

Dr. Distelhorst graduated from the University Of Colorado School Of Dentistry in 1988 and then participated in its Advanced Education in General Dentistry (AEGD) Program. She then continued her training with a General Practice Residency (GPR) Program with the Veterans Administration in Palo Alto, California prior to returning home to Vail, Colorado. In September 1990 she started her dental practice in East Vail, joining her father who had been serving the Vail Valley since 1975 as an orthodontist. He passed on to her his love of caring for people, helping patients have healthy, beautiful smiles, and a passion for continually increasing her knowledge.

Since moving back to Vail, having completed the core curriculum and Dawson Masters at the Pankey Institute in Key Biscayne, Fl. She attended numerous classes at The Dawson Academy for Advanced Dental Study in St. Petersburg, Florida as well as the Systemic and Nutritional Dentistry course with The Institute for Nutritional Dentistry.

Professional memberships include the American Dental Association (ADA), Colorado Dental Association (CDA), and Western Colorado Dental Society.

Dr. Distelhorst lives in Vail with her husband, Karl Edgerton, whose sister went to dental school with her. They have two lovely daughters who love to ski and play volleyball. Cynthia is in the Army, serving as a veterinarian. Ellen is studying Naturopathic medicine at Bastyr University. She enjoys hiking, snowshoeing, and skate skiing in her free time. 


51 Eagle Rd, A1, Avon, CO 81620

Phone: (970) 479-0408

Office Hours

MON - THU 8:00 am - 5:00 pm

FRI - SUN Closed

Get in Touch


Call: (970) 479-0408