My 3yr old son grinds his teeth together every night. Its not just a little but a lot and very rough. Is this normal? Could this mean something is wrong with him or could it effect him later?

I would take him to the dentist. It sounds like he's grinding he's teeth while he's sleeping and that can affect his teeth sooner or later in life. The dentist can give him a guard that he can wear at night while he's sleeping it won't stop him from grinding but it will put a barrier between the top and bottom teeth so he won't grind them down anymore

Children often grind their teeth. Is there anything happening in your lives that could be upsetting your little one? Believe it or not, 3 yr olds feel stress too.