Replacement Teeth Grown From Gum Cells

Growing new teeth may someday be a viable alternative to dentures. A new study has successfully created lab-grown teeth by combining human gum cells with stem cells from embryonic mice. The mouse stem cells, extracted from embryos, were specially raised to be "inducing"---that is, able to instruct other cells to start growing into a tooth. When these inducing stem cells were mixed with cells from human gums, and the combination transplanted into adult mouse kidneys, the result was a tiny tooth-shaped structure with proper enamel and roots. The roots were determined to be viable, meaning that if the tooth were to be implanted in a human jaw it would likely grow into the bone. The results, published last week in the Journal of Dental Research, pave the way for future experiments using human stem cells to create new teeth. One challenge is that currently scientists only know how to make ...