My 11 yo has really buck teeth. He gets regular dental care. The orthodontist kept saying to wait a little for his mouth to grow and his last baby teeth to fall out. On a lark, went to a different ortho. His xray revealed that he has four baby molars to fall out but NO! permanent teeth behind them to come in. And never will be!! Options are, implants or try to keep baby's as long as possible. He says he has a patient that is 60 with a baby tooth yet. I guess its not super rare for teeth to be missing. A teacher at school has a young daughter that never got a permanent front tooth! That would be devastating. Any of you ever hear of such a thing as no perm. teeth?