Often people think cleaning between your teeth can cause gaps to develop. This is far from true.
If you have gum disease and your gums are puffy, cleaning between them will help the gums become healthier and tighter. This in turn will make it look like gaps have developed but they were already there. In fact, if you don’t clean them then the gums will get puffier, the pocket deeper and the bone loss greater. This will cause more gaps to develop when it is eventually treated or worse still tooth loss.