Board-Certified
Pediatric Dentistry

Our Dental Team

Seth Ardoin, D.D.S.

Dr. Seth attended the University of Texas Dental School in San Antonio, receiving his Doctorate in Dental Surgery in 2008. He went on to complete his residency training in Pediatric Dentistry at the University of Texas Dental School in San Antonio and became certified by the American Board of Pediatric Dentistry in 2011. Dr. Seth is trained in all aspects of Pediatric Dentistry.
While dedicating his professional career to children’s oral health, Dr. Seth is a man for all seasons. Born and raised in El Paso, Texas, he attended Eastwood High School where he was heavily involved in sports, playing football, basketball, and baseball. As a biology major at McMurry University, he continued to play baseball and help the Indians (now War Hawks) win two American Southwest Conference championships (2001, 2004). In 2004 Dr. Seth was 1st-team Academic All-American catcher and male Scholar Athlete of the Year for McMurry University and for the American Southwest Conference.

These days you’ll find Dr. Seth spending time with his dad (a retired high school head football coach of 30 years) on the sidelines of Friday night football games in the Big Country, from 6A to 1A. During dove season, he’s often perched next to a tank or sunflower field trying to get his limit. Otherwise, Dr. Seth is trying to break 100 on the golf course, supporting his beloved Los Angeles Angels® of Anaheim (even though he lives well behind the enemy lines of the Texas Rangers®), and most often enjoying time with his wife and family.

Dr. Seth is a Diplomate of the American Board of Pediatric Dentistry, a member of the American Academy of Pediatric Dentistry, and in the College of Diplomates of the American Board of Pediatric Dentistry.

Adam Coley, D.D.S.

Dr. Adam was born in Dallas, Texas, but grew up primarily in the Brownwood area, graduating from Early High School. He attended Tarleton State University and completed his undergraduate degree in biology. He went on to the University of Texas Health Science Center in San Antonio where he earned the degree of Doctor of Dental Surgery in 2011.

After graduation Dr. Adam moved back to the Brownwood area and joined a general dentistry practice for two years. Finding his calling to serve children, Dr. Adam started practicing part time at APDA before joining the practice full time in July of 2013. He has loved every minute since then.

Dr. Adam holds certifications for oral conscious sedation, he has extensive experience with advanced behavior modification, and he has received a certification in Pediatric Advanced Life Support.

While attending dental school, Dr. Adam met the love of his life, Lacie, who “wandered into his back yard randomly,” he says. They have two daughters, Dylan and Chase, and enjoy spending time as a family RV’ing across the state.

Holly Ardoin, D.D.S, and Jordan Ardoin, D.D.S.

Dr. Holly was born and raised in Amarillo, Texas and graduated from Amarillo High School (go Sandies!). She attended Texas Tech University where she received her undergraduate degree in biology in 2013, but most importantly, met Dr. Jordan! She went on to complete her Doctorate of Dental Surgery at the University of Texas Health San Antonio School of Dentistry in 2018. Dr. Holly then completed her residency in Pediatric Dentistry, also in San Antonio. Dr. Holly is a Diplomate of the American Board of Pediatric Dentistry and a board-certified pediatric dentist.

Dr. Jordan was born and raised in El Paso, Texas and graduated from Eastwood High School. He attended Texas Tech University where he received his undergraduate degree in biology in 2012. He went on to complete his Doctorate of Dental Surgery at the University of Texas Health San Antonio School of Dentistry in 2019. Dr. Jordan then attended and completed his residency in Pediatric Dentistry at the University of Texas Health Houston School of Dentistry.

Dr. Jordan and Dr. Holly got married in May 2014. They have a daughter, Scout, and are looking forward to growing their family. They enjoy being with family, watching Texas Tech football, and spending time outdoors. Dr. Jordan and Dr. Holly are both members of the American Academy of Pediatric Dentistry, Texas Academy of Pediatric Dentistry, and Texas Dental Association. They feel blessed to serve the Big Country community!

Marcos Betancourt, D.M.D

Dr. Markie was born and raised in El Paso, Texas and graduated from Eastwood High School. He attended Texas Tech University where he received his undergraduate degree in biology in 2012. He then spent 4 years in Missouri where he received his Doctor of Dental Medicine at A.T. Still University in 2020. Once he graduated from dental school, he then completed his residency training in Pediatric Dentistry at the University of Texas Dental School in San Antonio at the Laredo Regional Campus. He has had training in sedation dentistry, hospital dentistry, and pediatric dentistry.

Dr. Markie is fluent in both English and Spanish, and would love to talk to you in either language. It is often said that he has never met a stranger in his life! While not practicing dentistry, Dr. Markie loves to watch sports. His favorite teams are the Spurs, Cowboys, Red Sox, and St. Louis Blues. He also enjoys spending time with friends and family and relaxing by the water. Dr. Markie is excited to become a member of the Abilene community, and cannot wait to help you with all of your child’s dental needs.

abilene pedistiran dental