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.
Sometimes a permanent tooth will erupt behind a baby tooth, forming a double row of teeth. It happens more often in the front teeth (incisors). The baby tooth will usually fall out within a week or two because of the pressure and the permanent one will move to its normal place without problems.