The diagnosis and treatment of cracked teeth is largely symptom based and is therefore often a sad, end stage diagnosis. Learn to diagnose pathologic cracks utilizing high powered magnification and other modalities and treat long before symptoms arise or the tooth becomes unsalvageable. Identify early cracks and examine new preparation techniques that are a significant departure from the G.V. Black preparations that are a leading cause of cracked teeth. Investigate step by step predictable treatment, evaluate endodontic and periodontal implications, and know when to extract.