Tooth #30 is restorable but has fractured to the gingival margin (about half the crown lost) and is endodontically treated. What is the best definitive restorative plan?

An endodontically treated posterior tooth with extensive coronal loss requires a post (when needed for core retention), a core build-up, and a full-coverage crown that incorporates a ferrule to protect against fracture.Other options: Amalgam or direct composite without cuspal/full coverage will not protect a structurally compromised endodontically treated tooth; extraction is unnecessary if the tooth is restorable.Key exam takeaway: Endodontically treated posterior tooth with major coronal loss: post (if needed) + core + full crown with ferrule.