What is the Earliest Age a Baby Can Cut Teeth?

Most babies cut their first teeth at about 6 months of age. However, your little over-achiever could start cutting teeth as early as 3 months. The age at which babies cut teeth is believed to be genetic, so you can get a good idea regarding the age your baby is likely to start teething by calling your mom and mother-in-law and asking when you and your partner cut your first tooth.

A 3-month-old baby chews on her fingers while laying on a blanket. (Image: Yuko Hirao/iStock/Getty Images)

When the Tooth Pokes Through

Teething symptoms typically begin three to five days before a baby tooth breaks through the gums. In some cases, teething symptoms may begin several weeks before baby cuts teeth. Most babies get their two bottom-front teeth first, followed by their four top-front teeth a month or two later. Whichever tooth makes its appearance first, start brushing your baby's new teeth with a soft, small-headed toothbrush. Wet the brush with water and brush gently. Don't start using toothpaste until baby is at least 1 year old.