Among the factors affecting endodontically treated teeth predisposed to failure are thin walls, weak roots unable to resist root fatigue causing root fracture and reducing the rate of success. A tooth after successful endodontic treatment should have a good prognosis to resume its function and support a restoration able to withstand chewing and parafunctional forces, as well as mechanical and chemical attacks in the oral environment for a prolonged time. This weakened condition of roots occurs in a large percentage of the population and therefore it is pertinent to consider the clinical parameters for their rehabilitation, with an alternative being to strengthen the root surface in order to improve stability and retention of the retainer, using materials that provide optimal mechanical properties, esthetics and longevity. The purpose of this review is to present concepts regarding clinical parameters that must be taken into account in the rehabilitation of weakened roots to determine which treatment is the best alternative in each specific situation, ensuring a good prognosis. Methodology: In order to organize the literature, it was necessary to select topics such as prognosis of endodontically treated teeth, alternative restoration, root fracture and then emphasize recent studies published on technological advances that have allowed the development of materials with better mechanical properties that allow uniform transmission of efforts uniformly. The information was obtained mainly from databases such as: Hinari, ScienceDirect, Wiley Interscience, and indexed sources such as Journal Dental Materials, Journal ProsteticDentristry, International Journal of Prosthodontics, Quintessence Int, Journal of Endodontics, Dent Traumatology. Key words: Endodontic treatments,