Economical Plastic Covers for Dentistry Sun Dental is a United States based dental supply company specializing in plastic disposable items for dentistry. Our products include covers for handles, trays, x-ray tubes, carts, impression guns and tubing for covering hoses as needed. Sun Dental products protect your patients and staff from cross contamination with a wide range of products and product sizes. In addition to our collection of offerings, our product development staff is available for any special requests for new items.