Stem cells are unspecialized cells capable of continuous self-renewal and differentiation into a variety of mature cell types when exposed to specific environments and stimulus. In the adult, it is possible to find stem cells from different sources, such as the bone marrow. However, dental stem cells represent a good alternative to other sources since they are easier to obtain than bone marrow stem cells and they keep similar characteristics like their ability to differentiate into various types of specialized cells. Keywords: Stem cells, dental, regenerative endodontics