Our Team


The team at Smiles on Main has taken great care to ensure that your experience is a comfortable and clean one. Our staff is always kind and courteous. You'll feel like you're right at home when you walk through the doors.

Dr Reggie

W. Mark Regenold, DDS

Meet W. Mark Regenold, DDS, Dr. Mark Regenold earned his dental degree at the University of Tennessee College of Dentistry, where he graduated with honors. He is a Fellow of the International Dental Implant Association and an active member of the American Academy of Facial Esthetics. He strives to further his dental practice through continued education and practicing the latest techniques to better serve his patients. Dr. Regenold takes great pride in ensuring every patient who walks into his practice is treated with care and compassion. He is an experienced dentist with a reputation for providing exceptional service and gentle, personalized dentistry.

Dr. Regenold and his wife, Cassara, have six children, a son in law and a granddaughter: Gracelynn, Jesse and Selah, Dylan, Abigail, Lilly, Carleigh, and Liam. Dr. Regenold enjoys spending time with his family, woodworking, golfing, hiking, running, and all things sports-related. He also enjoys being actively involved in his community by volunteering locally and in his church.

Dr. Regenold looks forward to meeting you!

Meet our Hygiene Team


Peggie, RDH

Meet Peggie, Peggie earned her license to practice Dental Hygiene in 2012 at SUNY Farmingdale. She also holds a BS degree in Health Education. She moved to TN in 2016 with her husband and twins. Peggie enjoys being active in sports. She has played soccer since the age of 7 and has run 7 marathons. Currently, she enjoys gardening, hiking with her dogs, and playing in her stream with her children.

Peggie looks forward to meeting you!


Sara, RDH

Meet Sarah, Sarah earned her license to practice Dental Hygiene in 2014 at Remington College in Nashville, TN. She was born and raised in Columbia, TN. Sarah enjoys spending her free time playing tennis, fishing, cooking, and traveling. She has been a dental hygienist for six years. Sarah’s favorite thing about her job is comforting anxious patients and giving them a confident, healthy smile.

Sara looks forward to meeting you!


Caitlin, RDH

Meet Caitlin, Caitlin has been a dental hygienist for 10 years. The favorite part of her job is providing patients the experience of good dental care and the feeling of a great smile! She loves getting to know her patients and building long-term relationships! Caitlin lives in Collinwood, TN with her husband and two girls. In her spare time, she enjoys shopping, reading, and spending time with her family and friends.

Caitlin looks forward to meeting you!

Meet our Dental Assistants


Laura, RDA

Meet Laura, Laura has been very blessed to have a career as a Registered/ Certified Dental Assistant for 32 years. She loves the dental profession. Laura enjoys helping her patients achieve excellent oral health and creating beautiful smiles. She and her husband, Dennis, are very blessed to have 6 children, 2 granddaughters, and 2 grandsons. In her spare time, she enjoys spending time with family, faith, reading, continuing education of all types, and travel.

Laura looks forward to meeting you!


Dara, EFDA

Meet Dara, Dara has been an RDA for nearly 20 years and completed her EFDA course from UT Memphis 7 years ago. She strives to make each patient feel comfortable and ensure they have a great experience here at Smiles On Main. Dara lives in Cornersville with her husband and teenage son and daughter. In her free time, she enjoys spending time with her family, traveling, and activities with her church family.

Dara looks forward to meeting you!

Meet our Administrative Team


Cassara Regenold, Practice Manager

Meet Cassara, Cassara has been very blessed to enjoy the many facets of dentistry for the past 19 years. She has a passion for dentistry, the people she has the privilege to serve, and for the lives that are changed through exceptional dental care. Cassara loves learning ways to offer new services and improve the patient experience in our office. She most enjoys the relationships that are built with both her patients and her team here at Smiles On Main. We truly are a family! Cassara is honored to work alongside her husband, Dr. Regenold, as he continues to serve our community with excellence. They have 6 children, a son-in-law, and a precious granddaughter: Gracelynn, Jesse and Selah, Dylan, Abigail, Lilly, Carleigh, and Liam. They also a Golden Retriever named River, and a wild kitten, who is more like a dog, that adopted them on the farm, named Shadow. In her spare time, Cassara enjoys spending time with her friends and family, staying actively involved in her children’s school and extracurricular activities, decorating, cooking, finding delicious food for a date night with Dr. Reggie, and traveling.

Cassara cannot wait to meet you and welcome you to our Smiles on Main Family!


Brooke, Patient Coordinator

Meet Brooke, Brooke was born and raised in Cincinnati Ohio. She is northern at heart and southern by choice! Brooke graduated from Lee University in 2014 with a Bachelor's in Psychology and has spent the last 5 years in the healthcare field. She considers it a blessing to interact with patients on a daily basis and to have the opportunity to make a positive impact with even just a smile. She has recently married the love of her life, Logan. In their spare time, you will probably catch them at one of the local coffee shops in town.

Brooke looks forward to meeting you!


Anna, Treatment Coordinator

Meet Anna, Anna is a Chattanooga native and moved to Columbia, TN in 2016. She has been in the dental field for 5 years and we are blessed to have her on our team here at Smiles On Main. Outside of work, she enjoys spending time with her new puppy, Dolly, and watching football!

Anna looks forward to meeting you and helping you with all of your treatment needs!


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