My husband had teeth removed because of overcrowding, then his jaw growth caught up and he has gaps.My family's Dental Implants dentist claims that crowding teeth can just be teeth out of kilter with jaw growth, and that you never really know until the jaw has stopped growing - something that only specialist xrays and specialists can determine. By that I mean that only an expert can say whether crowded teeth are likely to fit their future adult jaw, or whether some need to be removed.