30 slides PHD defense presentation. Title Creating the Most Favourable Environment for the Attachment, Viability, Proliferation, and Differentiation of Stem Cells of the Apical Papilla; From Irrigation Solutions to Growth Factors. Outline slide then 5 slides background (Regenerative Endodontic Procedures, Regenerative Endodontic Procedures: A Dream or a Reality?, The Regenerative Paradox, Can Chitosan Bridge the Gap? and Harnessing TGF-Ξ²1 for Regeneration then hypothesis and objectives slide, materals and methods, results, discussion, conclusion, acknowledgment and bibliography