Dental Cotton Rolls 3.8" x 1 1/2" Sterile 5/Pack in Poly-Bag, Tyvek Peel Open Pouch 50/CaseDental cotton rolls are small sterile cylinders of absorbent cotton that are used in a variety of dental procedures. They are typically 3. 8 inches long and 1 1 2 inches in diameter, and come in a pack of 5. These cotton rolls are used to absorb saliva and other fluids in order to keep the area dry and improve visibility during dental procedures. They can also be used to hold the cheeks or tongue in place to prevent any interference during treatment.