Personalized Worlds Best Dentist Long Sleeve T-Shirt. Give that greatest dentist a custom gift with our Worlds Best Dentist logo on a Long Sleeve T-Shirt - Black. Just use the designer tool to personalize it below the cool sports look design. Pre-shrunk 100% cotton 6.1 ounce long sleeve t-shirt. Double-needle stitched neckline and sleeves. Quarter turned. Shoulder-to-shoulder taping. Adult: S, M, L, XL, 2XL, 3XL