Meet The TeamTrillium Dental



Our Vision

The Downtown Columbus dental spa helping Ohio become one of the "Top 10 healthiest states."

Our Purpose

Trillium Dental blends relaxation with complete health dentistry allowing people to comfortably, confidently, and successfully pursue a healthier life.

Our Values


  • Teamwork
  • Relaxation
  • Impactful
  • Leading
  • Learning
  • Innovative
  • Understanding
  • Mindful
  • Our Dental Mission

    At Trillium Dental, we aim to blend comfort and precision in a way that makes you confident every time that you come by for a dentist visit.

    Going to the dentist doesn't need to be the stressful experience many expect it to be. Precise, quick, and comfortable dental service is the future of our industry. So come by our dental offices in the heart of Downtown Columbus, and let us show you how our philosophy at Trillium Dental and your needs align.

    Sarah Mladineo, DMD

    Dr. Sarah K Mladineo DMD grew up in Strongsville, OH. She earned her Bachelor of Science degree in Biology from The Ohio State University. She then journeyed south, receiving her Doctor of Medical Dentistry from the University of Florida. Upon graduation, Dr. Mladineo returned to Ohio where she worked for a private dental practice in Chillicothe for several years before branching out on her own. She is a member of the American Dental Association, Ohio Dental Association, the American Academy of Facial Aesthetics and is Invisalign certified. She is also involved in the Mommy Dentists in Business Group and enjoys continuing her dental knowledge by being a member of the Central Ohio Dental Forum. In her free time, Dr. Sarah enjoys baking and spending time with her family.

    Meet the Team

    Kristin Olexio, RDH

    Dental Hygienist

    As one of our two Hygienists, Kristin is eager to help you on your wellness journey. She joined our Trillium Dental team over a year ago when she and her husband moved to Columbus from Westerville. She graduated from a small college in Massachusetts, married into the military and has four young adult children. In her down time, she enjoys exploring coffee shops with family and friends.

    Kristin Olexio, RDH

    Dental Hygienist

    As our Hygienist, Kristin is eager to help you on your wellness journey. She joined our Trillium Dental team a few years ago when she and her husband moved to Columbus from Westerville. She graduated from a small college in Massachusetts, married into the military, and has four young adult children. In her downtime, she enjoys exploring coffee shops with family and friends.

    Liam Brennan

    Dental Assistant

    Liam is one of our Dental Assistants and is also a student at Ohio State. He is in his fourth year studying biology and will also be applying to dental school this year. In his free time, he enjoys working out, hiking, and traveling.

    Joyce Ponder

    Treatment Coordinator

    As the newest member of our team, Joyce is our lovely Treatment Coordinator. After working for an NBA team for six seasons, she moved back to Columbus five years ago to be closer to family. In her free time, she enjoys reading British murder mysteries and is a fan of Acorn TV and BritBox. She also loves to travel!

    Christina Aridia

    Appointment Coordinator

    Christina will greet you at the front desk with a smile! She is in her third year at Ohio State majoring in biology and minoring in human nutrition, and looks forward to applying to dental school this year! She is active in her pre-health sorority, Delta Omega Kappa, as their Sisterhood Chair and enjoys playing the guitar and doing paint-by-numbers!

    Summer Short

    Appointment Coordinator

    As one of our Appointment Coordinators, you can catch Summer at the front desk to check you in! Summer is a fourth-year Health Sciences major at Ohio State minoring in both Business and Integrative Health. She’s also very passionate about cooking and botany! She will be applying to dental school this year and dreams of attending either Ohio State or Marquette.

    Gina DeMarsh

    Appointment Coordinator

    Gina joined our staff as Appointment Coordinator in October of 2021. She will be graduating from Ohio State in the spring of 2023 with a BS in Biology with honors distinction and minors in Architectural Studies as well as Physical Anthropology. She is excited to attend dental school in the fall to begin her own journey in dentistry after having learned so much here at Trillium. In her free time, she enjoys relaxing, traveling, hanging out at coffee shops, and spending time with her loved ones.