The Complete Handbook of Pacifiers & Teethers

Chapter 1: Understanding Pacifiers & Teethers

A pacifier is a rubber, silicone, or latex nipple attached to a shield and handle, designed to be placed in an infant's mouth to soothe discomfort or provide comfort. A teether is a similar device—sometimes with a nipple, more often a flat or textured surface—designed to apply gentle pressure to the infant's gums during the teething process. Both are among the most common products in infant care, yet most people who buy, recommend, or manage them have never examined what actually happens when a baby uses one, what materials are involved, or why one design might be safer or more durable than another.

To understand pacifiers and teethers concretely, start with their basic anatomy. A pacifier consists of three parts: a teat (or nipple), a shield (the disc-shaped portion that sits against the mouth), and a handle or ring. The teat is the functional part—the portion the infant sucks on. Its shape, firmness, and material directly affect how the device performs. The shield serves two purposes: it limits how far the teat can be inserted into the mouth (a safety feature) and it holds the device in place against the infant's face. The handle or ring allows a caregiver to hold or retrieve the device, and in some designs, it serves as an attachment point for a clip or cord.

A teether follows a similar structure but with an important difference in function. While a pacifier's teat is designed primarily for sucking, a teether's