Medicom 4521 Safe Basics Cotton-Filled Exodontia Sponge, 2" Length, 2" width, 8-ply. Medicom 4521 Safe Basics Cotton-Filled Exodontia Sponge, 2" Length, 2" width, 8-ply. Use fewer sponges per extraction with highly absorbent, cotton-filled gauze.. 100% white cotton with cotton-fiber filling. Latex free, multi-purpose sponges save time. Non-sterile.. . .. 100% white cotton with cotton-fiber filling. Latex free, multi-purpose sponges save time. Non-sterile.. . .