According to an article in Science Daily, extensive research has showed that a specific human deciduous pulp stem cells (hDPSC) in baby teeth can be used to regrow dental tissue. Scientist Songtao Shi and his colleagues conducted studies in China, where they enrolled 40 children who had injured one of their "adult teeth" while still having their baby teeth present. The procedure began with Phase 1 of trial where hDPSC was extracted from baby teeth and was used to treat the damaged "adult tooth." After a couple of weeks results showed; healthy root development, thicker dentin (the hard part of a tooth beneath the enamel) and an increase of blood flow.
The treatment presents a promise to preventing tooth decay at an early age. Most children damage their teeth at an early age, thus needing root canal procedures in the near future, which can also lead to other more serious and expensive procedures. Since this research is still brand new, scientists see a potential benefit in the dental field, however if this were to become a valuable procedure it will be costly.