Root canal treated teeth are usually weak because of loss of tooth structure due to dental decay, loss of moisture and root canal treatment per se. Hence, salvage of such a root canal treated tooth presents dilemma to the clinician. Over the last few years, concept of post and core has flourished in different dimensions. This is required before placement of a crown over such mutilated teeth. The remaining tooth structure height and configuration can play an important role in the strength of the final restorative outcome. This book, therefore, provides an insight into the effects of the height and the uniformity of the circumferential ferrule during cast post and core restoration. This is especially useful to practising dental professionals and restorative dentists.