One of my most important and useful EDC items is my dental care kit, as I floss and brush at least twice a day. I also carry sewing needles and thread. I have tried using sewing thread as dental floss recently. It didn't work out well. It didn't remove food residues nearly as well as dental floss. Today I tried using dental floss as sewing thread. It worked pretty good. The Crest Glide dental floss is tough and holds things together well. Yes: dental floss as sewing thread. No: sewing thread as dental floss.