This first teeth to fall out are usually the lower front teeth. This happens around 6-7 years of age. It is followed by the upper front two teeth during the same age range, but usually slightly after. Then they work their way back. The child will usually loose a set of 4 teeth each year, first central incisors, then lateral incisors, the primary first molars then primary second molars then finally the canines. They don't usually all come out at once, although several can be loose at the same time. One thing to note: children get their first permanent tooth nicknamed the six year molar before they loose any baby teeth. It comes in behind the last baby molar.