The lights flickered. Rohan’s alarm went off—but it was only 2:15 AM. Rohan sat up, eyes blank. “Arjun,” he said, not in his own voice, but in the clipped tone of a textbook appendix. “Define working cast.”
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Arjun’s hands shook. He’d never done a crown from scratch without YouTube. But he remembered his professor’s voice: “Margin is everything. If the margin fails, the tooth rots.” He remembered the feel of the wax, the way to dip it in hot water, the angle of the chamfer. The lights flickered