Meet The Doctor

Peter Guirguis, DDS

Peter Guirguis, DDS

Doctor of Dental Surgery

Dr. Guirguis was raised in Kansas City and graduated from the University of Missouri – Kansas City School of Dentistry. He moved to Dallas in 2013 with his wife and has called Texas home ever since. Dr. Guirguis belongs to the American Dental Association, Texas Dental Association, and Dallas County Dental Society. Continuing education is a priority in his career, as he has completed advanced training in dental implants and general dentistry.

In his spare time, Dr. Guirguis and his wife enjoy traveling around the country, hiking and snowboarding. He can often be found working in his garage under the car or in the backyard grilling. In 2006 he earned his Black Belt in Taekwondo, and has spent some time instructing children in the art. He has also been involved in Big Brothers Big Sisters since 2007.

About Definitive Dental: Peter Guirguis DDS

Definitive Dental: Peter Guirguis DDS

Definitive Dental: Peter Guirguis DDS is a Grand Prairie based family dentist practice that treats patients of all ages. We are committed to delivering the highest quality dental care and do so using state-of-the-art dental equipment. We are a cosmetic dentist that offers services like checkups, teeth cleaning, crowns, veneers and more.

We also perform emergency dentist services that include bonding, root canals, crowns, and bridges. As a local dentist, we create lifelong relationships with our patients and their families and work to ensure that they receive treatments in a comfortable and relaxed environment. Dr. Peter Guirguis and our staff invite you to schedule an appointment by calling 972-534-6000 and experience why our patients think Definitive Dental: Peter Guirguis DDS is the best dentist in Grand Prairie.

Meet Our Team


Part-time Receptionist

Diana is our part-time receptionist. She is the friendly voice that answers calls in the mornings, while working another job in the afternoons and preparing to enter hygiene school. She is a long time patient and we were delighted to have her shadow our hygienist and then hire on as staff!



Kimberly has been our dedicated hygienist since January of 2016 and works hard to make sure every visit is thorough but gentle. She has over 30 years of experience here in Texas where her husband, three children, and two grandchildren live. She is active with her church and is a member of the choir.


Lead Dental Assistant

Lynette is our lead dental assistant with 30 years of experience. She graduated the Bryan Institute in Kansas and worked in that state until 2015 when she moved to Texas. She has two children and her fourth grandchild is on the way.


Financial Coordinator

Liz is a Grand Prairie native with deep roots in the community. In addition to her insurance expertise, she is also a registered dental assistant. This makes her perfect to help you fully understand your dental treatment and benefits before your appointment. She and her husband have three children to whom she dedicates her time outside of the office and she enjoys sports, movies, and traveling.