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Specialized rotary diamond instruments designed for chairside tooth preparation optimized for Zolid zirconia restorations (crowns, bridges, etc.). It was developed in cooperation with clinicians to ensure ideal stump/preparation geometry for CAD/CAM workflows. These shapes (egg, torpedo, conical) allow efficient reduction while creating smooth margins, proper taper, and rounded internal angles — important for zirconia to avoid stress concentrations and ensure good fit/seating. • Tooth stump preparation for anterior and posterior teeth. • Creating optimal geometry for monolithic zirconia (Zolid DNA generation and similar). • Reducing vibration/heat and achieving precise contours suitable for digital scanning and milling. • Works for both conventional and adhesive cementation cases. • Instruments are tailored specifically to zirconia material properties. • Helps minimize over-preparation while ensuring sufficient reduction. • Excellent for minimally invasive approaches where possible.