Dr Browns Prevent SootherDr Brown's PreVent orthodontic soothers are designed by a pediatric dentist and have a patented suction free air channel that helps reduce suction and palatal pressure. The soft, suction release bulb spreads wider as baby sucks for low pressure comfort. PreVent helps to lower the pressures that can create dental issues, such as cross bites. The thin stem design is minimally intrusive on baby's mouth.