Ridged dental floss

In combination with a dental floss container housing a roll of flexible dental floss string having a distal end, a proximal end opposing the distal end of the dental floss string, and a string length separating the distal and proximal ends of the dental floss string, the improvement comprising:

• a first section along the string length with a tightly spaced series of spherical ridges each of an elastic polymeric material and directly coupled to opposing sides of the dental floss string to define a diameter, wherein the tightly spaced series of spherical ridges in the first section are of the same diameter;
• a second section along the string length with a tightly spaced series of spherical ridges each of an elastic polymeric material and directly coupled to the opposing sides of the dental floss string to define a diameter, wherein the diameters of each of the tightly spaced series of spherical ridges in the second section are of the same diameter and are each greater than the diameters of each of the tightly spaced series of spherical ridges in the first section;
• and
• a third section along the string length with a tightly spaced series of spherical ridges each of an elastic polymeric material and directly coupled to the opposing sides of the dental floss string to define a diameter, wherein the diameters of each of the tightly spaced series of spherical ridges in the third section are of the same diameter and are each greater than the diameters of each of the tightly spaced series of spherical ridges in the first and second sections, the first, second, and third sections are adjacent to at least one of each other, the second section is interposed between the first and third sections.