Well ladies, no treatment required, however I was given a lecture on how to properly use interdental sticks (I struggle to use floss so do my best with the little brushes every day - but I was, clearly, doing it wrong
).
I promised I would do better, promptly bought the blue ones, yellow ones and orange ones as advised -I, apparently, need all 3 sizes to cope with my gob! I then shuffled out suitably chastised
