Learn About Our Dental Office in Mission, TX


Welcome to Beautiful Smiles. We offer a wide range of services to improve your appearance and your self-confidence.

About Us

At Beautiful Smiles, we want you to know that thanks to the latest advances in cosmetic and restorative dentistry, a beautiful, youthful smile has never been so easily accessible. Our patients love the gentle and caring manner of our dental team of skilled and talented people. You can be assured that our knowledge and experience is surpassed only by our desire to provide you with the best dentistry possible. As soon as you walk through our doors, you will be greeted by a friendly team of professionals who take a genuine interest in you and will treat you as family.

Meet the Doctor

Dr. Miguel Castillo III
Dr. Miguel Castillo III A native of the Rio Grande Valley, Dr. Miguel Castillo III graduated high school from Mercedes and completed his undergraduate coursework at the University of Texas – Pan American. He received his Doctor of Dental Surgery degree from Marquette University School of Dentistry. Dr. Castillo began practicing dentistry in 1997. Dr. Castillo focuses on cosmetic, orthodontic, neuromuscular, implant dentistry, sleep dentistry, and now offers Pinhole Gum Rejuvenation. Dr. Castillo has been able to expand the services offered in this practice by continuing his dental education after graduating from dental school. He has taken coursework at the Las Vegas Institute, as well as through the American Dental Association, the Academy of General Dentistry, the American Academy of Craniofacial Pain, the International Association of Orthodontics, The Mid-America Orthodontic Society, and The American Dental Implant Association. He has gone through Mastership status and is has acquired Fellowship status through The American Implant Association. He has attended sleep medicine/dental medicine mini-residencies. He is also a diplomate of the American Board of Dental Sleep Medicine, a rigorous process exemplifying his knowledge and dedication to the field of dental sleep medicine. He has trained and received certification from Dr. Chao with Pinhole Gum Rejuvenation. Dr. Castillo and wife Aracely have three children Alyssa, Kiyana, and Miguel IV. Dr. Castillo is an avid golfer and fisherman.

Our Patients Say

Outstanding customer service because everyone is so friendly here... My family and I have been coming here for about 15 years and we have NEVER had any negative experiences. Today I had the awesome results of Dr Castillo using a LASER machine to remove 3 cavities, which meant NO numbing shots. This LASER technique made for faster results for my BEAUTIFUL SMILE...Dr Castillo and his team are truly the BEST...🤩
Cathy R
Dr. Castillo did an implant in 2015 on one of my front teeth everytime I go to the dentist they compliment his implant. Today is the first time I had an issue. A screw came loose and another denist was able to go in and replace the screw (screw that holds the crown to the implant). Dentist said this was a common occurrence for implants. While he was doing this he took his time to tell me what a GREAT job that had been done on this implant. Thank you Dr Castillo!
Stephen R
I recommend the new laser dr. Castillo has in his office. Didn’t have to worry about a needle in my mouth. The new laser is no pain at all and a quicker process to fix a cavity. I really recommend it.
Mia E
I loved the service provided and the follow up as well. The whole team helps you, getting an appointment and being received in a timely manner is appreciated. I had a bit of a difficulty on a surgery and the after care was wonderful, they made sure to ask me how I felt and how everything was healing. I am very picky about doctors and here, I am glad to say that I will come back.
Cecilia Loza

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