Published by on 23 de julho de 2026 Color-Coded Silicone Handles Available in black (RGS 1-2) and yellow (RGS 3-4) for easy identification and ergonomic handling during clinical use. Crown Preparation for All-Ceramics RGS 3-4 guides incisal and axial reduction for ceramic crowns, improving fit, aesthetics, and longevity.