The branch of tissue engineering has emerged as a new scientific field which enlightened many new approaches to the vital pulp therapy. The main objective of this field is to regenerate the tooth-tissue structure as well as the function with the help of interactions between the three key elements, i.e. stem cells, scaffolds, and morphogens. In this technique, various principles of biology, medicine, and engineering are combined for regeneration and/or repair of a damaged tissue or organ. This review article gives an insight into the basic concepts of tissue engineering and strategies so far studied. Furthermore, this article focuses on the key elements which are used in tissue engineering and the clinical approaches that can be applied in dentistry.