DENTSPLY SIRONA TM Classic® Posterior Teeth Available in 24 shades and 1 bleach shade. sic® Posteriors Classic 0° Posteriors 29M 29M Classic X = 29.00 X = 29.00 U = 7.00 L = 8.10 Y = 31.90 Y = 31.90 31M 31M 31M Classic X = 31.00 X = 31.00 U = 7.20 L = 8.10 Y = 34.60 Y = 34.60 33M 33M Classic X = 33.00 X = 33.00 U = 7.90 L = 8.60 Y = 35.40 Y = 35.40 U = 7.90 L = 8.60 Classic Classic U = 7.20 L = 8.10 31M Classic Classic U = 7.00 L = 8.10 Classic Classic Classic® Posterior Teeth Available in 24 shades and 1 bleach shade. Classic® Posterior Teeth Available in 24 shades and 1 bleach shade. Classic 0° Posteriors 42 2021 Removable Prosthetic Teeth Resource Guide