3737 Grand Avenue, Suite 8
Billings, MT 59102
(406) 248-2669
8 AM - 5 PM


Relax: We Are Here For You

What sets us apart

Legacy Smiles has been providing excellent quality service to the population of Billings, MT, and the surrounding communities since 1988. We strive to stay up to date with the latest technology, provide a comfortable, relaxing atmosphere, and build relationships with our patients. And we do it all just for you.

We are very quality oriented and pay great attention to details. We only see one patient at a time. Each patient is given their own reserved time and we spend that entire time with that one patient. In other words, we never go from person to person while providing a treatment to a patient. This allows us to give our undivided attention to our patients and provide them with the utmost high-quality dental care.

Our dental specialists

Our Doctors

Dr. Kolten Astle DDS, Legacy Smiles doctor in Billings MT

Kolten Astle


Dr. Kolten Astle moved to Billings from Tulsa, Oklahoma. He was born and raised in Logan, Utah and completed his undergraduate studies at Utah State University. For most of his life, Dr. Kolten desired to work in healthcare and be in a profession where he could help others improve their lives–and dentistry provided him the opportunity to do all of these. He graduated from Roseman University where he earned his DMD along with his MBA.

Dr. Kolten is dedicated to providing the highest quality of care and an outstanding patient experience. He is dedicated to staying current in all the new technology and techniques in dentistry and has furthered his education by attending courses in dental implants, cosmetic dentistry, and root canals or nerve therapy. Dr. Kolten served a two-year church mission in Arequipa Peru where he became fluent in Spanish.

Dr. Kolten is married to his sweetheart Amber and they have one daughter, Olivia. Dr. Kolten enjoys spending time with his family, playing basketball, tennis, pickleball, ping pong, skiing, and cooking.

Our dental specialists

Our Amazing Team

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Tiffany Moran

Dental Assistant

Tiffany was born and raised in Florida, then moved to Montana as a child. Tiffany studied at Montana State University in Billings and earned her Bachelor’s Degree. She enjoys spending time with her husband on their family ranch located in a peaceful area of the Bull Mountains. One of her biggest passions in life is starting colts, and restarting trouble horses. Tiffany enjoys a simple lifestyle that involves the outdoors, hanging out with her dogs, horses, husband, hiking, and working out in the gym. She believes helping others is as simple as keeping your eyes open for their needs, and then doing something about it. Every need presents an opportunity to show God’s grace and love in a tangible way.

Lisa Oskendahl

Patient Services Coordinator

Lisa’s career in dentistry began in 2004 as Dr. Stuart’s patient services coordinator. Throughout her time at Legacy Smiles, she has taken several courses and seminars to stay at the forefront of dental insurance coding and billing, patient communications, and HIPAA. She is here to help you find appointments that work for you, answer questions you have about your treatment, help you navigate insurance, and give you your options for financing plans. She is willing to do what it takes for you to have a great experience!

Lisa and her husband Kurt own Model Avionics, a drone-based geo-mapping and aerial photography business. They have a daughter Eden and a son-in-law Dusty. They also have two dogs and a naughty Moluccan Cockatoo! In her free time, she’s learning how to play the accordion!

Lisa, Patient Services Coordinator at Legacy Smiles in Billings MT
Justine Hiller, Dental Assistant at Legacy Smiles

Justine Hiller

Dental Assistant

Justine joined our team in 2023 with a passion for dentistry and making it a long and successful career. She was born and raised in Huntley, Montana.
She is very friendly and personable and works hard to help patients receive the best dental care. Justine loves raising and riding her horses, going to concerts, fishing, and spending time with family and friends.

Ashley Kirkpatrick

Patient Care Coordinator

Ashley has a bachelor’s degree in healthcare management and many years in healthcare/hospital surgery scheduling but due to the strong changes of 2020, she needed a change. Ashley has been in dental for three years and with Legacy Smiles as a front desk coordinator for two years but a patient of Dr. Stuarts since high school. (It was a no brainer she says when asked to come work for Dr. Stuart.)

Fun little facts about Ashley:

  • She has a dog named Scooby Doo
  • Just entered mommy hood to a beautiful miracle baby boy named Maxson.
  • Enjoys traveling; favorite place is Colorado to see family & catch a few Rockies games.
  • She loves the hot summer days- you’ll never hear her complain about it being too warm only cold. (Yes, she is a Montanan just doesn’t like the cold)
  • She is obsessed with Christmas & hopes to have a Christmas sweater or outfit for the entire month of December.
  • For Ashley Taco Tuesday is any day of the week ending in Y.
Ashley Kirkpatrick, Patient Care Coordinator at Legacy Smiles in Billings MT
Brittany Kadlec, Dental Hygienist at Legacy Smiles in Billings MT

Brittany Kadlec

Registered Dental Hygienist

Brittany was born and raised in Minnesota and graduated with her degree in Dental Hygiene from Argosy University in 2018. You will find that she is compassionate, able to put her patients at ease, and ensures a positive dental experience. Brittany is married with two children and has two family dogs. Personal interests include being outdoors, classic cars, reading, bowling and foosball.

Lauren Hill

Registered Dental Hygienist

Lauren earned her associate’s degree in dental hygiene from Sheridan College and her bachelor’s degree in dental hygiene from the University of Wyoming. She started with Legacy Smiles in 2016. As a dental hygienist, Lauren’s number-one goal is to provide preventive care in the form of patient education, cleanings, and periodontal evaluations and treatment.

She enjoys getting to know her patients on a personal level while at the same time helping them improve their oral and overall health. She is a great part of our team who goes the extra mile to give her patients a positive experience while providing the highest quality of work!

Lauren and her husband Justin stay busy chasing around their twin boys, Cash and Miles. They love taking in all that Montana has to offer and spend most of their free time outdoors with friends and family.

Lauren grew up on a cattle ranch outside of Custer, so many of her weekends are spent there helping her parents. Lauren loves living in Billings and getting to know all of her patients from here and the surrounding communities.

Lauren Hill, Dental Hygienist at Legacy Smiles in Billings MT
Lisa Lovering, Dental assistant at Legacy Smiles in Billings MT

Lisa Lovering

Dental Assistant

Lisa’s dental journey began in 1995 with Dr. Stuart. Her dental team became her second family. Lisa quickly realized dental is more than a job- she chose to make it her career. Once she accomplished her Certified Dental Assisting Certification along with her Certified Dental Practice Management Certification, she chose to advance her training & education and holds both her Fellowship and Mastership in Dental Assistina. She became one of the first two of each of theses in the state of Montana. Lisa’s passion shines when she is able to create a comfortable and welcoming environment, building relationships with her patients while providing exceptional patient care.

Lisa married her bestie, Shane Lovering in 1995. They have 4 amazing daughters, 9 incredible grandkids and 1 great grandchild (her grandkids and her great granddaughter are her slice of heaven on earth.) In her spare time she volunteers as a Young Life Leader at Billings West High School, enjoys attending her grandkids sporting events, dancing, the outdoors, photography and crafting.

Make your dream smile a reality!

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