Related Clues:

• Triangular deposits
• Glues
• River plains named for their usual shape
• Hard and soft mouth parts
• Opera singers' concerns
• Periodonist's concern
• Rivers' mouths
• Gingivitis targets
• Palatal pendants
• Greek D's
• Bites sans teeth
• Tooth holders
• Nile and Mississippi
• Palate parts
• River mouth formations