Carl Cha tfield is a certified Project Management Professional (PMP) with extensive knowledge of Microsoft Office Project as well as specific usability issues. Timothy Johnson has previously worked as an Office Project support professional for several years. Tim possesses in-depth technical knowledge about the software.
The complete set of primary teeth is in the mouth from the age of 2 Â½ to 3 years of age to 6 to 7 years of age. Other primary tooth eruption facts: A general rule of thumb is that for every 6 months of life, approximately 4 teeth will erupt.
The following are general guidelines for the eruption of the baby teeth: 1  The first tooth to erupt is usually a middle, front tooth on the lower jaw, known as the central incisor. 2  Next, the four upper incisors usually come in.  The above is followed by the first four molars, and the remaining bottom two lateral incisors.