Dr. Anthony D. Thiessen is a native of the Sidney area and a graduate of Montana State University, Bozeman and the Oregon Health Sciences University. He returned to Sidney as an associate in 1996 and opened his own private practice in 1999. Dr. Thiessen established an early goal in life, utilizing information taught from his parents and grandparents, and that is to give everything in life 110%. In pursuit of his goal he graduated High School with top honors and excelled not only in academics but sports as well. Continuing his goal in Dental School he excelled to achieve many prestigious awards there as well. These include the Academy of General Dentistrys Award for being the top clinician of the graduating class of 1996. This very prestigous award was voted on by his instructors and evaluators from the academy. During graduation he also received the award for being the top laboratory technician of his class and top honors in endodontics. He was known for his expertise while in Dental School and currently by his patients and respected professional collegues.

Dr. Thiessens passion is to provide patients with the areas most advanced dental health care in a comfortable, relaxed environment. Many years later, he continues to improve his education, equipment and office environment in order to provide that quality of care.

Dr. Thiessen is a profectionist and his patients, family and friends will attest to that. He is an artist and an architect at heart and knew that he possessed the innate talent to design and develop smiles that were not only beautiful, but also healthy and comfortable for his patients.

Dr. Thiessen has taken numerous courses at the most prestigous Las Vegas Institute for Advanced Dental Studies (LVI), and has taken numerous other courses all over the USA. Dr. Thiessens thirst for continuing education for himself is unrivaled. He is a member of the American Dental Association and the Montana Dental Association. He also takes great pride to be a very active member in the International Association of Orthodontics and the American Academy of Craniofacial Pain. He typically completes completes over 100 hours of continuing dental education each year.

Dr. Thiessen resides in Sidney and loves the great outdoors and sports of all kinds. He is a very involved father and can often be found spending time with his children and family. He has a passion for health and fitness and has goals to compete in a triathlon some day.

Team is defined as a group organized to work together. Dr. Thiessens team does just that. Each team member joins Dr. Thiessens enthusiasm for continuing education and commitment to the latest developments in cosmetic and restorative dentistry, TMJ treatment, orthodontics and sleep apnea. This cooperative effort is designed to enhance the quality of your care and make your experience at Healthy Smiles Dental and Orthodontics truly exceptional.

A Fairview, Montana native, Anne joined our team in 1999 as a Registered Dental Hygienist. She earned her bachelors degree from Carroll College in 1980 and she has had an active career as a hygienist since that time. Anne has had a very successful career as a hygienist and is in constant pusuit of excellence in the care she provides. Anne has attended numerous courses in her career as a hygienist and has a vast knowledge in patent care and periodontal treatment. Her latest courses were taken at the Las Vegas Institute for Advanced Dental Studies and courses to become laser certified in periodontal treatment.

A Velva, North Dakota native, Tammy joined our team in 2005 as a dental assistant and helps Dr. Thiessen with all apects of treatment. She has attended numerous continuing education classes including several classes at the Las Vegas Institute for Advanced Dental Studies and the Center for Occlusal studies. Tammys passion for continuing educaton is evident in her knowledge of neuromuscular dentistry and orthodontics.

Jessica and her husband Chris were married in 2013 and added a son to their family in 2016. They built a home in the country just a mile from her parents farm. Jessica enjoys spending time with her son outdoors, whether it is playing in the yard with their dogs and chickens, going on tractor rides on her parents farm or spending weekends camping, boating and fishing, and hiking.