Personalized Dentistry Smile Youth T-Shirt. A smiling face made from the word dentistry is a humorous gift design for dental professionals and students at bac to school, birthdays, holidays and graduation. Let the good times roll in a durable T-Shirt that takes kids from school to play in an amazing array of colors. 5.0 oz., pre-shrunk 100% cotton. Seamless 1x1 rib collar.