The Borosilicate Infant Teethers offer babies with sore gums something safe to chew on. This is helpful, because the gumming action offers counter pressure to baby's brand-new teeth that can be soothing and help alleviate pain. The moment your infantâs baby teeth begin to emerge is an important milestone, but the process of teething can be tough for both you and your baby. Teething is when your babyâs teeth start to come through their gum line. The offered teethers are available in various shapes and designs as per the need. The Borosilicate Infant Teethers are very efficient and safe for use.