Those are cute Never tried the dental threaders But in the past ordered from Nancy and Clothide the threaders. they are long with 2 thin wires at the ends and big hole in the middle to put thread in. Find them great for a the machine and hand needles. Last yr. received catalog from Newark dressmaking supply & they have a new one called Flexi-needle threaders # N718 for $3.00 for 35 of them. This Company has 2 catalogs & they are Newark dressmaking supply and Home Sew Inc. Order the catalogs and in both books you find coupons for 2.00 off shipping & other items. They sell quilting,sewing,craft supplies. Also telephone # is 1-800-736-6783 They are located in Pa. Sorry this is so long.