16 shade colors for dental color matching A1, A2, A3, A3.5, A4, B1, B2, B3, B4, C1, C2, C3, C4, D2, D3, D4 Use for comparing teeth shades before and after bleaching Benefits - Provides an objective reference to compare tooth color changes during whitening - Wide range of shades enables more accurate matching to natural tooth color - Simple, repeatable method for documenting shade changes over time Key attributes - Function: shade comparison before and after bleaching - Coverage: 16 color shades from A1 through D4 including A3.5 - Purpose: supports consistent shade assessment and recordkeeping during whitening How to use - Before bleaching: align the current tooth color with the closest shade in the 16 color set - After bleaching: compare the post-treatment color to the same shade chart to determine final shade - Documentation: record the selected shade to track progress across sessions or treatments Use scenarios - In a dental clinic, before whitening to establish a baseline shade - After a whitening session to verify the achieved shade - Multi-session whitening tracking to monitor gradual shade changes over time