Home / Product Manufacturer / KnightShield Dental KnightShield Dental Showing the single result Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low Sort by Sales Rank Retainer Case (2 Pack). Retainer Case with Vent Holes. Perfect Denture case, Mouth Guard Case, Aligner Case, Mouth Guard… $7.99 View on Amazon.com