Need of a new classification for post and core failure

Since many years, post has been commonly used to provide adequate support and retention for the restoration of endodontically treated teeth. Although it is successful, several cases of failure have been reported. Various classifications of teeth for post and core were given in the past. However, classification on the basis of failure of post and core has not yet been described. Methods: Electronic search on PubMed and a hand search were performed to identify relevant literature, which were thoroughly screened before the articles were included in the study. Results: Based on the search, various classifications related to post and core had been given by many authors; however, it was observed that certain aspects of the classification regarding the failure of post and core were not yet included. Therefore, the manuscript is an attempt to emphasize the need to develop a classification system for the failure of post and core. Conclusion: The new classification on failure of teeth restored with post and core has been proposed by the authors as Type I, Type II, Type III, and Type IV depending upon the type of failure. The new classification aims at better understanding the failure of post and core and can be a valuable tool during epidemiological surveys