Hello! My name is Dr. Donald W. Zajac, and I am from Houston, Texas. I grew up right in the middle of a family of eight. From an early age, I was always fascinated by the sciences and how things worked. I would take things apart, sometimes things I was not supposed to, according to my parents, then figure out how to get them back together. No matter the result, my parents would always encourage me, which is probably where I got my positive attitude from. With this background, dentistry seemed to be a natural career for me. I went to the University of Texas Dental School in Houston and graduated at the top of my class. I have been blessed to be able practice this noble profession for over 35 years now and am amazed at how far dentistry has progressed throughout these years.

We can do things now that were just wishful thinking back in the day, from truly life-like cosmetic procedures to implants. I owned my own practice in the Las Colinas area for many years and have worked in several dental offices throughout this great state. I now have found a home here at Today Dental. I have two grown children, Nicholas and Brittany, who both are close by and live in the Denton area. I am extremely proud of them and what they have achieved in their lives. I enjoy watching the Rangers and the Cowboys, and recently started playing pickleball at my gym. I have picked up a lot of good advice along the way in dentistry and in life; but one thing that was said to me many years ago really stands out, and still holds true in this day of diversity. It is very simple: “It is the differences between us that allows us to make a difference around us.” Hope to see you soon!

Dr. Mario A. Morganti has a distinguished career in orthodontics and dentofacial orthopedics. He earned his Doctor of Dental Surgery from the University of Southern California and advanced his expertise with a Master’s degree in Orthodontics and Facial Orthopedics from the Pontifical Catholic University of Rio Grande do Sul. He further enhanced his research knowledge by obtaining a PhD in Dental Materials.

With over two decades of experience, Dr. Morganti led the Morganti Orthodontic Clinic, a pioneer in digital orthodontics and innovative treatments, before relocating to Texas. During his career, he served as Head of Orthodontics at Santa Casa de Misericórdia de Porto Alegre, the largest hospital complex in Latin America. There, he initiated numerous advancements in orthodontic care and established a large dental center with over 40 doctors of multiple specialties.

Dr. Morganti is an esteemed guest professor at the Federal University of Health Sciences and a frequent lecturer at scientific meetings. He is member of several professional organizations such as the World Federation of Orthodontists and the American Academy of Dental Sleep Medicine, as well as an international member of the American Association of Orthodontists. He also served as Treasurer and Vice President of his state’s Orthodontic Society.

Dr. Morganti and his wife have three children, one of whom is currently in orthodontic residency. In his free time, Dr. Morganti enjoys sharing his love for watersports with his family, including surfing, sailing, windsurfing and diving.