【New, Unused】 GISHY GOO! (Gishy Goo) Oral Mucosa Protectant for Orthodontics Set of 3 Thank you for viewing. This is an oral protectant for brackets and wires used in orthodontic treatment. I was very satisfied using this during a time when the wires in my orthodontic treatment rubbed against the inner lining of my cheeks, causing painful mouth ulcers. I had purchased a lot of it, but I am selling it because my orthodontic treatment is almost finished. All 3 items are new, unused, and unopened.