Teething and child teeth development, 19th-century illustration. The development of the child and adult teeth in the jaw is shown across bottom. Across top are two types of rattles used by teething babies, one soft and one hard. At left is a marshmallow stick (which can soothe sore gums). At right is an ivory ring. Published in 'La Vie Normale et la Sante' (Normal Life and Health, Paris, 1881) by Dr Jules Rengade.