Related Clues:

• Dull snapshot finish
• Coat in one's mouth
• Unshiny photo finish
• It's found on the cusp
• Tooth surface
• Outer tooth layer
• Artificial movie background
• Paint store option
• Hardest human tissue
• Dull-surfaced, as paper
• Nonglossy
• Lackluster?
• Glossy coat
• Glossy coating
• Like some photos