Minimal Invasive Post Endodontic Monoblock Restorations: I- Richmond Crown: Review

In restorative dentistry, restoring poorly fractured endodontically treated teeth is a typical challenge. Such teeth frequently require additional root canal support in the form of a post and core repair. When endodontically treated teeth with lost coronal tooth structure are left untreated for an extended length of time, they may experience supra eruption, drifting, tilting, and rotation of adjacent teeth. Because of the lack of interocclusal space, the dentist may find it difficult to fabricate a crown. To restore normal anatomy, function, and aesthetics, teeth with less remaining crown height should have a post and core followed by a crown. The most challenging patients to treat are those with little inter occlusal clearance and steep incisal guidance. Teeth that have been badly damaged and have little or no crown structure require further retention and support. The Richmond crown is a wonderful option for restoring such teeth. For such circumstances, the Richmond crown is a viable treatment alternative that may be executed with very little incisal clearance to accommodate post, core, and crown thickness. Richmond crown, which comprised a threaded tube in the canal and a screw-retained crown, was first presented in 1878. It was eventually reconfigured as a one-piece dowel and crown when the threaded tube was removed. The current article focuses on Richmond crown restoration and its variations, including diagnosis and treatment planning for such restorations, as well as fabrication techniques