There are 20 primary or deciduous teeth. The first teeth to erupt through the gums at 5-8 months are the lower central incisors. The last to erupt are the second upper molars at about age 2 years.
Between ages 6 and 12 primary teeth are lost and replaced by permanent teeth.
- The 1st molars (6th- year molars) have fully erupted by age 6-7 years. The lower central incisors have nearly fully erupted and the upper central incisors are moving down into the empty sockets.
- By age 8 years all permanent incisors have erupted.
- 20 permanent teeth have replaced 20 primary teeth, and the 12-th year molars (1st and 2nd molars) have erupted. The canines, 2nd premolars and 2nd molars are not fully erupted. By age 12, 28 permanent teeth are in place. The last 4 teeth, the 3rd molars (Wisdom teeth) may erupt at any time after this, or not at all.
Use Browser "Back" arrow to return to previous page.
Resources
"Grant's ATLAS OF ANATOMY" Eighth Edition- James E. Anderson,M.D. 1983
Doctors Corner INternet Group, Inc. 1997-2004