Dental Dam, Non-Latex, Powder-Free/Low Protein, Purple, Medium, Peppermint Dental Dam, Non-Latex, Powder-Free/Low Protein, Purple, Medium, Peppermint Sign in to save to your list 19500 Used to isolate and protect teeth and mouth during a dental procedure. Available in 6 inch x 6 inch sheets, Medium gauge. 15 sheets per box. Where to Buy Ask a specialist