The invasive tooth resorption pose considerable challenges in management due to its complexity and aggressive nature of the resorptive process.The book highlights the various classifications of root resorption, cells involved and mechanism of action of these cell. since a correct diagnosis and an understanding of the aetiology and dynamics of the process is critical to its effective management it also focuses on the diagnosis and the treatment part of root resorption as well as precautions that should be taken while treating such cases. with careful case selection and complete inactivation of resorptive tissue successful management can be achieved.