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Dr. Josh de Graffenried

Dr. Josh de Graffenried is a native to East Texas and has always had a love for restoration, healthcare, and community.

After graduating with a Doctorate of Dental Surgery from the Texas A&M Health Science Center Baylor College of Dentistry in Dallas, he joined his father Dr. Joey de Graffenried in their thriving practice in Kilgore, TX and has enjoying spending eight years there learning and leading with a remarkable team.

Dr. Josh completed the 10-month Maxi-Course in Implant Dentistry at the Atlanta Center for Restorative Dentistry in 2013. He has been a member of Advanced Dental Implant Studies in Atlanta, Georgia, since 2014, and he attends meetings there four times a year learning from some of the most renown dentists in the country. He is also an associate fellow of the American Academy of Implant Dentistry, having completed 300 hours of implant training as well as passing an in depth written and oral examination.

In November 2013, Dr. Josh married his wife, Sarah, and together they are raising three adorable little ones. They love spending time outdoors, creating, reading, and spending time with friends. 

Ashley Langston


Ashely is from Lindale and completed high school there before going on to get a Bachelors of Science at Evangel University in Springfield, Missouri. She graduated with an A.A.S in Dental Hygiene from TJC in 2021. She is married to her husband Zach and loves to read, play board games with friends, and cook. Ashley loves helping people achieve and maintain a healthy smile as well as educate patients on how to best take care of their teeth! She is looking forward to further developing her skills and learning new techniques and products to better help serve her patients. She is looking forward to developing her skills and learning new techniques and products to better help and serve her patients. Ashley has a way of connecting with her patients in a way that will easily make her one of your favorite hygienists.

Cassie Gonzalez


Cassie is from Tyler, TX and attended Tyler Junior College before coming to work with us here on our team. For fun she likes to travel and get out of town. She likes to decorate, loves to shop, and is highly organized! She has two boxer dogs that are her babies. Her enthusiasm and energy is such an asset to our team, and she is amazing at making things happen. Assisting Dr. Josh with your procedures when you come in, she will make sure you get the best care possible. She loves making people smile and is looking forward to learning new dentistry methods in her job in the future.

Mayra Westbrook


Mayra is from Tyler, TX and graduated from Stephen F. Austin University and Tyler Junior College with a teaching degree. She loves to read, hang out with her family, and she likes spending time outdoors. She also loves planning and organizing. She has been married for 4 years to her husband Caleb and has an adorable 2 year old son. Mayra brings leadership and creativity to our team that we greatly value. She loves meeting new people and hearing their stories, as well as seeing the end results of big mouth transformation cases. As she continues in her career here at Tyler Center for Dental health she is excited about expanding her dental knowledge and meeting lots of amazing new patients.

Iris Cornelio

Front Desk

Iris is from Tyler Tx, and graduated from Tyler Junior College as well as East Texas Dental Academy. She loves to hang out with her friends and family and loves to go on vacations. She is married with two kids, one sweet baby girl and one adorable little boy. Iris loves helping patients achieve healthy smiles and she is looking to acquire new dental knowledge as she continues in her career. She will soon become a favorite face at the office, with her warmth and genuine care for each person. She is an incredibly hard worker and we are so lucky to have her on our team!

Sarah de Graffenreid


Sarah is from Longview, TX and met Dr. Josh, her husband, in 2012. After settling down from years in music - teaching and playing piano - she enjoys creating content and experiences for our patients and our team. She loves to decorate, cook, and spend time playing in the backyard with her three little kiddos. One of her favorite things about her job in marketing is getting to imagine patients' needs ahead of time and create content to bring them into our office so they can experience excellent care. She is looking forward to learning and growing more as she expands her knowledge of marketing and puts many new things in place that increase an amazing patient experience for everyone who walks in our door.

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