The diagnosis and treatment of cracked and fractured teeth is often a sad, end stage diagnosis. Non-retentive preparation offers a significant departure from the G.V. Black preparations, a leading cause of cracked teeth. We will examine how to diagnose pathologic cracks utilizing magnification and other modalities and treat long before symptoms arise or the tooth becomes unsalvageable. Learn why new Class II cavity preparations and other modalities are crucial to prevent eventual tooth fracture and receive a blueprint for diagnosis and treatment of complete and incomplete fractures.