The VITA Classical Shade Guide is an essential tool for dental professionals in accurately determining tooth shades for restorative procedures. This comprehensive shade guide comprises sixteen distinct color categories, each represented by a range of shades denoted by letters and numbers, from A1 to D4. These categories encompass a spectrum of natural tooth colors, including reddish-brownish, reddish-yellowish, grayish, and reddish-grayish tones. To ensure precise color matching, the guide should be held at an angle of approximately 25-30 cm from the patient's tooth, with the arm comfortably bent.