Meet Our Katy TX Doctors

Barry Lin DDS Principal Dentist
Dr. Barry Lin was originally from Taiwan and grew up in New York. He completed his undergraduate education in Cornell University majoring in biological engineering. He then earned his doctor of dental surgery degree at Columbia University College of Dental Medicine. After receiving his doctorate degree, Dr. Lin completed two years of training working alongside veterans at the Bronx VA Medical Center.
Dr. Lin continuously engages in continuing education courses to stay current on the latest dental knowledge, procedures and technology.
He takes the time to listen to every patient and is a strong believer that establishing a relationship with every patient will go a long way to achieve not just a healthy smile but also a complete state of wellness.
Dr. Lin recently relocated with his wife to Houston. During his downtime, he enjoys traveling and exploring restaurants around the city. He also loves to spend time with his puppy. Dr. Lin is fluent in English and Mandarin Chinese and is looking forward to working with you!

Paul LeTellier Jr, DDS, MS Endodontist
As the child of a dentist in the military, Dr. Paul moved frequently as a child. He went to high school in Mobile, Alabama and attended college at Loyola University of New Orleans.
Upon graduating from Loyola University of New Orleans, Dr. Paul received a Masters in Science from Old Dominion University in Norfolk, VA.
After graduate school, Dr. Paul attended Virginia Commonwealth School of Dentistry. Dr. Paul graduated first in his dental school class which led him to his residency in Endodontics at Virginia Commonwealth School of Dentistry. After his residency in Endodontics, Dr. Paul moved to Houston in 2010 and has called Houston home ever since.
Dr. Paul has been married to his lovely wife Candyce for over 15 years. He has two wonderful girls who keep him busy with soccer and horse back riding. In his spare time, Dr. Paul enjoys running and training for marathons. He appreciates his opportunity to provide dental care to the communities of Houston.

Marcus A. Bitter, DMD Associate Dentist
Dr. Bitter was born and raised in the Midwest. After graduating from Luther Preparatory School in Wisconsin, he received his bachelor’s degree in Biology at Bethany Lutheran College in Minnesota. Dr. Bitter then received a scholarship from the United States Navy to attend the University of Louisville School of Dentistry, where he completed his Doctor of Dental Medicine.
As a new Naval Officer, Dr. Bitter began his service in Pensacola, FL. In Pensacola, he completed a credentialing tour where he gained additional valuable dental experience. He was assigned to Naval Air Station Corpus Christi in Texas where he continued to expand his skill set and grow as a dental officer. Dr. Bitter and his wife quickly grew to love Texas. Upon completion of his service to the Navy, they decided to settle in the greater Houston area.
Dr. Bitter enjoys staying up to date with advances in general dentistry through continuing education courses. He is Invisalign certified and has special interests in esthetics and dental sleep medicine. He practices conservative comprehensive dentistry and is committed to doing what is best for his patients.
Outside of the office, Dr. Bitter enjoys spending time with his family, traveling, and being actively involved at his church.

Sara Abedini Board Certified Orthodontist
Dr. Abedini completed her specialty in orthodontics at the University of California, Los Angeles (UCLA) where she graduated with honors and awards in both the clinical and academic research fields. During her time at UCLA, she was a head TA and lecturer for dental students, contributed to orthodontic research, and had presentations selected for numerous conferences.
Before starting her journey at UCLA, she earned her PhD from the Department of Orthodontics and Craniofacial Developmental Biology at Hiroshima University, Japan. During those years, Dr. Abedini published many articles in peer-reviewed journals. She also co-authored a book chapter about orthodontic treatment for patients with dentofacial deformities and syndromes.
She is a proud Diplomat of the American Board of Orthodontics as well as an affiliate member in the Edward H. Angle Society.
Dr. Abedini’s broad experience in the dental field since 2007 and her extensive years in education reflect her passion and love for orthodontics, particularly her patients.
After spanning many countries, Dr. Abedini has settled in Houston where she has been practicing orthodontics and dentistry since 2017 and is passionate about supporting and building the Aliana community.\When she is not working, she enjoys traveling, cooking, and spending time with her family.

Steve Ragsdale DDS
Dr. Ragsdale received his training at the University of Texas Health Science Center at San Antonio (UTHSCSA) School of Dentistry, graduating in 2016. In that same year, he began his residency training at the University of Texas at San Antonio and completed his Advanced Education in General Dentistry (AEGD) in 2017.
Through his training as an AEGD resident, Dr. Ragsdale administered IV sedation and performed complicated surgeries for both healthy and medically-compromised patients. During his residency, he discovered that his passion in dentistry was to provide IV sedation and oral surgery services to his patients. It was then that he decided to focus his career as a general dentist on providing these in-house services to other practitioners.
In addition to his many distinguishing memberships, Dr. Ragsdale is trained and certified in Advanced Cardiac Life Support (ACLS). He is also fluent in Spanish.


Dannie S. Yu MS, DDS Chief Dental Officer
Dr. Yu grew up here in Houston and graduated from Alief Hastings H.S. Afterwards he chose to expand his horizons and received his BA in the History of Art from the University of Michigan, followed by a Masters in Human Physiology at Georgetown University then ultimately his DDS from the University of Michigan again. Dr. Yu is credentialed by International Congress of Oral Implantologists (ICOI). Also as a published biochemistry researcher, Dr. Yu brings many years of scientific training and expertise with his unique artistic background to the benefit of Avalon Dental’s patient family.