Tommee Tippee Moda 6-18m Silicone Orthodontic Pacifiers 2pcs with an oval, orthodontic shape that is ventilated, meaning it compresses more easily than traditional pacifiers, thus reducing pressure on the baby's developing teeth and gums. The symmetrical, soft silicone nipple that is fully reversible does not tilt upwards, so the pacifier is always placed correctly in your baby's mouth, even when the baby puts the pacifier in its mouth by itself.