Adults between 28-32 teeth are normal, where the difference of four teeth refers to the wisdom teeth that have gradually degenerated, some adults have four wisdom teeth that have completely degenerated, and some adults have completely erupted, so it is slightly different. Of course, if the wisdom teeth are in the right position after eruption, they can be used as normal teeth. If the wisdom teeth are blocked, they need to be actively removed, so more teeth is not necessarily a good thing, but it is likely that because of the blocked teeth, you will need to suffer again and have an operation to remove them completely. The best is 28 teeth, the degeneration is basically over, do not need to be bothered by wisdom teeth, and 28 teeth is enough to maintain the efficiency of chewing in the mouth.