Teeth Eruptions…or Teething
Eruption refers to the tooth breaking through the gum line. In babies, tooth eruption is also called teething. The timing of tooth eruption differs from child to child. For example, one child may cut their first tooth when only a few months old, while another may not start teething until they are 12 months old or more. While the timing may vary, the order of tooth eruption is:
- The two front teeth (central incisors) in the lower jaw are usually the first to erupt. This occurs somewhere between the ages of six and 10 months.
- The two front teeth (central incisors) in the upper jaw erupt between the ages of eight and 13 months.
- The lateral incisors, which are the teeth on each side of the central incisors, erupt in both the upper and lower jaws between the ages of eight and 16 months. The lower set tends to erupt before the upper set.
- The first set of upper and lower molars (flat-surfaced back teeth) erupt between the ages of 13 and 19 months.
- Canine or ‘eye’ teeth sit beside the lateral incisors and erupt in both the upper and lower jaws between the ages of 16 and 23 months.
- The second set of upper and lower molars erupts between the ages of 25 and 33 months.
Generally, the average child has a full set of 20 primary teeth by the age of three years.