Similar to umbilical cords, which are less controversial, deciduous teeth contain stem cells that have the potential to cure diseases and regenerate tissues and bones in the body. If these teeth are collected, stored and cryopreserved, they may be used to treat illnesses that may occur when your child reaches adulthood or to help close family members suffering from serious diseases. It's no surprise that parents are willing to spend hundreds of dollars to extract, freeze and preserve these valuable stem cells.