Is there any difference between pacifiers? I am considering to buy this Nuk pacifier for my newborn.

Don’t believe the hype regarding pacifiers labelled orthodontically-friendly. Studies have shown that whatever type of pacifier it is, they’ll all cause anterior open bites if they’re in the mouth long enough, and they’ll all cause posterior cross-bites if it’s an intense and frequent use of the soother. Look for a pacifier with the nipple firmly attached to the base — and check it regularly to make sure it hasn’t loosened, to prevent a choking hazard. Also, the pacifier should have a ventilating hole punched into either side of the plastic base, which allows air and saliva to escape, minimizing rashes around the mouth. As for the silicone vs. latex decision, it’s really just personal preference. But if there’s a family history of latex allergy, it’s best to be cautious.