Is it normal for molars to erupt at this age?

Q: My 5 years and 10 months old son has not lost any of his milk teeth yet. In his lower jaw he has 12 teeth. It appears that the first molars on both sides have erupted. Is this normal?

A:At age 6 lower front teeth will start to become mobile and then will fall. At this time the first permanent molar also erupts. So if his molars are out the front teeth will also follow. If there is no change till he is 6 and a half then think about getting it checked.