Personalized Beaver Tooth Care Floss Em Youth Long Sleeve T-Shirt. Beaver with big teeth and gotta floss em dental care quote on Youth Long Sleeve T-Shirt - Royal Blue for a dental hygienist, dentist or child. youth long sleeve t-shirt. Shoulder-to-shoulder taping. Youth: S(6/8), M(10/12), L(14/16), XL(18/20)