Joshua M. Knowles, DDS, MSD
Dr. Knowles’s first job was for his orthodontist while in high school. It was there he witnessed the positive impact that a beautiful, healthy smile has on a person’s outlook. To him, orthodontics is much more than just straightening the teeth; it is about cultivating confidence through their smile. He considers it an honor to provide orthodontic treatment to his patients and get to know them and their families on a personal level. He has a commitment to excellence and strives to deliver the highest-quality care to each person by staying on the cutting-edge of technology and individualizing treatment.

Dr. Knowles was born in Tyler, Texas, went to high school in Arlington, and then graduated from Texas Christian University in Fort Worth with a Bachelor of Science in biochemistry. Dr. Knowles married his high school sweetheart, Katherine, before moving to Houston to attend The University of Texas Dental Branch (DDS) and an additional 2+ years’ specialty training in orthodontics (MSD), where he also earned a master’s in dentistry. He then gained valuable experience working in a private practice in the greater Houston area before moving to central Texas.


  • Diplomate of the American Board of Orthodontics
  • American Association of Orthodontists
  • Southwest Society of Orthodontists
  • American Dental Association
  • Texas Dental Association
  • Central Texas Dental Association
  • UT Houston Orthodontic Alumni Association
  • Psi Omega Dental Fraternity


Dr. Knowles enjoys spending most of his time with his wife and their two young boys. His hobbies include
sport fishing, hunting, and golfing.

Meet Our Team

We recognize that all of our patients are unique and deserve to receive orthodontic care that reflects their individual needs. Our orthodontic team is highly trained and experienced, with endless enthusiasm for orthodontic care, and we work closely together to help you achieve a healthier, more beautiful smile. We proudly offer high-quality, professional orthodontics in Temple, Texas, to meet your needs and desires, and we strive to ensure that your treatments are comfortable. We invite you to visit or call us today at 254-778-8028 to meet our amazing team and schedule your appointment with Dr. Knowles. We look forward to meeting you!


Rebecca – Finance Manager
Hi! My name is Rebecca. I am a Texas girl. I grew up in North Dallas and moved to central Texas in 2011. I enjoy spending time with my family and friends. I love the outdoors and working with my husband at our family farm. We have five kids and eight dogs, but only two kids and three dogs still live at home. In the summer, you can find me on the lake each weekend with all my kids, minus their dogs.
Connie – Treatment Coordinator
Hi! My name is Connie. I have lived in central Texas for 25 years. I have two daughters — one in Troy, Texas, and one in Dubai. My husband and I love traveling and spending time with our three grandkids. I am a crazy Texas Rangers fan and can’t wait for baseball season every April.
Gaby – New Patient Coordinator
Hi! My name is Gaby. I was born and raised in California. I moved to central Texas in 2008, and I LOVE IT here. I also love pizza, tacos, Topo Chico, music, dancing, and karaoke, but most of all, I love spending time with my husband and our three awesome kids who are Izaih, Gianni, and Ezequiel. Between football, soccer, gymnastics, and dance practices, we also like to run for fun — crazy, right? I ran my first half marathon at the age of 27 and hope to run a full marathon soon … but I hope to run into YOU here at Smile at the World Orthodontics.
Helen – Collections & Insurance Coordinator
My name is Helen. I have worked at Smile at the World Orthodontics for almost 25 years. My husband and I have been married for over 45 years and have always lived in the Temple area. We have two daughters and five grandchildren. Our favorite pastime is spending time with our family, attending as many sporting events, school activities, and, of course, birthday celebrations as we can.
Chelsey – Orthodontic Assistant
Hello! My name is Chelsey. I’m originally from upstate New York. My husband is active duty military. The army has brought us to the great state of Texas. I have two sons and one fur baby. I enjoy exploring local shops and restaurants and experiencing the local culture. We are a baseball and football family. So, most weekends you can find me cheering on my boys as we travel for baseball. However, in the fall I will be cheering on my football team. Go Pats!
Christina C – Orthodontic Assistant
Hi! My name is Christina.  I have been an orthodontist assistant for a little over 10 years! I am originally from South Carolina. My husband is active military, and that’s how we ended up in the great state of Texas. We have two precious boys, Kain and Avery. Being a mother of boys is the absolute best. When I have a free moment, I enjoy a good book and going to the lake, but my favorite thing to do is forcing my family to get in the car and drive. No destinations in mind, just drive and see what we can find.
Cynthia – Orthodontic Assistant
Hi! My name is Cynthia. I have a daughter named Savannah. Her personality is so sweet and sassy. We enjoy practicing softball together, and I love watching her play at her games. I have a big family that I love dearly. I am the second youngest of four siblings. I spend most of my weekends at family gatherings, where I enjoy spending quality time with all of my family. In my spare time, I enjoy going shopping, exercising outdoors, and eating out.
Kim – Orthodontic Assistant
Hi! My name is Kim. I have a beautiful daughter, Delaney. I enjoy being outdoors, doing yard work, horseback riding, fishing, swimming, and camping.

Tammy – Administrative Assistant
Tammy has been part of our practice for over 13 years. Some of her favorite parts of working at Smile at the World Orthodontics are getting to know our patients during treatment, seeing our patients after treatment with such great results, and working with our fantastic team. Tammy has been married to Scott for 35 years. They have a daughter, Christi; a son, Zach; a son-in-law, Kevin; and two grandchildren, Cason (8) and Chloe (6). Away from the office, Tammy enjoys watching her son play college basketball, watching her grandkids play sports, and reading.