The NEW Playtex Ortho-Pro Silicone Newborn Pacifier is clinically shown not to cause teeth misalignment. This orthodontic pacifier was developed by dentists with baby"s natural oral development in mind. The thin wavy stem and concave nipple minimize pressure exerted on baby"s teeth and gums. The Air Comfort TM shield is designed for baby"s sensitive skin. The reusabale carrying case has an On-the-go hook for convenience and portability.