Pacifier use can lead to dental issues like misaligned teeth if used routinely over long periods of time. As a child's mouth develops, constant pacifier use can cause the teeth to tip forward or cause overbites and underbites. However, these dental issues can be prevented by weaning children from pacifiers at an early age. It is important to teach children other self-soothing techniques besides thumb sucking and to remain calm and encouraging when helping them stop using pacifiers.