Fig.5	Fig.6 (incomplete floss)	Fig.7 (complete floss)

Red arrowhead in Fig.5. points to the contact area between the teeth, whereas black arrowhead indicates cavity.  Most of us feel it difficult to pass the contact point with floss.  It must be a great accomplishment to just pass it (between two red asterisks (*) in Fig.6), but it is far from enough.  As you may see, the cavity (black arrowhead) is deeper than the area that floss can reach.  To have total home care, not only should we use floss, but also floss deeper than we think (well past the area easy to have cavity, between two red asterisks (*) in Fig.7), back to original article