Meet the Doctors

Proudly Serving the Community for Over 20 Years

Dr. Stewart, Dr. Vadnal, and the entire team at Infinite Smiles are pleased to be able to offer beautiful smiles to their neighbors in St. Louis and the surrounding communities.


Chad R. Stewart, DMD

“From the moment they walk through our door, my goal is to give our patients the greatest dental experience they have ever had.”

Dr. Chad Stewart is committed to providing the highest quality oral healthcare in a friendly and relaxed atmosphere. He believes every patient deserves the best and treats everyone with the same care and consideration as his own family.

After obtaining his bachelor’s degree from Augustana College in Rock Island, IL, Dr. Stewart earned his DMD from Southern Illinois University School of Dental Medicine. He has spent his entire professional career serving the families of the St. Louis area. He continues to take hundreds of hours of continuing education as well as to educate his fellow dentists though lectures on digital dentistry and mentoring through CDOCS. He has worked with leaders in his field to ensure he uses the latest techniques and best materials to provide the worry-free dentistry you deserve.

In his free time, Dr. Stewart enjoys spending time with his wife Melanie and their boys, Brice, Shane, Garrett, and Mark. A little golf or fishing when time allows is a great way to spend the day!

Dr. Stewart maintains membership in the following professional organizations:

  • Academy of General Dentistry
  • American Academy of Cosmetic Dentistry
  • Greater St. Louis Dental Society
  • Missouri Dental Association
  • CDOCS mentor
  • Spear Study Club
  • American Dental Association

Melanie L. Vadnal, DMD

“Your smile is one of the first things others notice about you. Life is too short to let insecurities about your oral health hold you back.”

Dr. Vadnal understands you have a choice of where you seek your oral health care. As a result, the team at Infinite Smiles is thorough and uses the latest techniques in our commitment to a lifetime of highest quality care for you and your family.

A graduate of Illinois College in Jacksonville, IL, Dr. Vadnal went on to receive her dental degree from the Southern University School of Dental Medicine. She has lived in the St. Louis area for over 20 years and is proud to serve the families of her home. She listens to your needs and concerns and discusses all of your options with you before proceeding with treatment. You can stop dreaming of a beautiful smile and make it happen today.

Away from the office, Dr. Vadnal loves spending time with her husband, Chad, and sons, Brice, Shane, Garrett, and Mark. She is a big Elvis fan and enjoys outdoor music venues and festivals.

Dr. Vadnal is a member of the following professional organizations:

  • American Dental Association
  • Missouri Dental Association
  • Greater St. Louis Dental Society
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