Denny | Robinson

Our Practice


Bringing smiles to Richardson since 1985.

Welcome to the dental offices of Mark Denny and Sarah Robinson, conveniently located in the Promenade North shopping center in Richardson, TX. We know that dental health is not just about white smiles: it’s about having strong teeth and healthy gums. It’s about prolonging the simple joy of eating delicious things! Our mission is to help our patients accomplish these goals in a painless, compassionate, and efficient way.

We aim to educate our patients in a safe environment while offering them necessary comprehensive care. We understand that many people have anxiety about dental treatment, so we created a soothing environment and a scheduling system that never keeps you waiting long. By combining the latest technology with traditional techniques, we give our patients the best care in North Texas.


Mark S. Denny, D.D.S.

Dr. Mark Denny grew up in Richardson and graduated from JJ Pearce High School in 1977. He graduated from Texas Tech in 1981, and Baylor College of Dentistry in 1985. Dr. Denny is a member of the American Dental Association, Texas Dental Association and Dallas County Dental Society. He is also one of 2% of dentists to be inducted into both the International College of Dentists and the American College of Dentists. 

Dr. Denny has a heart for missions and throughout his career has traveled to Brazil, Mexico, Romania, and Guatemala providing dental services to the underserved. He co-founded and currently co-directs the Dental clinic within the Network Community of Ministries in Richardson. Network provides emergent and follow up care to RISD students who do not have access to dental treatment. 

In his free time Dr. Denny enjoys running, yoga, being outdoors, and traveling. He is married with 3 daughters, and has 3 grandchildren. He is a deacon at Prestonwood Baptist Church. 

Sarah D. Robinson, D.D.S.

Dr. Sarah Robinson graduated Cum Laude from Texas A&M University in 2007 with a degree in Biomedical Sciences, and received her Doctor of Dental Surgery degree in 2011 from Texas A&M Health Science Center Baylor College of Dentistry in Dallas. 

Dr. Robinson is a member of the American Dental Association, Texas Dental Association and Dallas County Dental Society. She stays current with up to date topics in dentistry and is passionate about delivering comfortable, conservative and high quality treatment. Along with Dr. Denny, Dr. Robinson enjoys providing dental work to underserved students within RISD through Network Community of Ministries.

She is married to Dr. Sam Robinson, a local oral surgeon, and has 2 young children. She enjoys traveling, art, exercise, cooking healthy food, following Aggie sports and spending time with her friends and family. She attends Park Cities Baptist Church and participates in Bible Study Fellowship in Richardson along with her kids.