Based on a research conducted by Dr. Songtao Shi from the National Institute of Dental and Craniofacial research, baby teeth contain 1-2 dozen valuable stem cells that can be used for treating different diseases later in life.
Stem cells are located in the dental pulp within the tooth, which then regenerates into neurons, bone and cartilage (or even cardiac cells). Stem cells from teeth can be turned into pancreatic cells which produce insulin and that is why this treatment can be effective for type 1 diabetes.
In order to preserve the stem cells which can be useful, they have to be alive. Within 48 hours of being frozen, the dental pulp needs to have proper blood supply- less than this and the cell dies.
The Director of Dental Regenerative Laboratory, Dr. Peter Murray, says that oral and teeth tissue can be regenerated by stem cells from baby teeth, tooth buds, third molars, periodontal tissue or induced pluripotent cells.
There are services which can store baby teeth, which recommend removal of the baby teeth by dental professionals; the tooth should not be dangling, because this way it`s very possible it does not contain enough blood supply. Some companies offer storage container and at-home collection process, others offer packaging and shipping supplies so that the parents can save their baby teeth themselves.