I think that if they stop crying completely then teeth probably isn't the main reason for them being awake. That said, sometimes a niggling pain (not enough to make them wail) is enough to stop them from settling into a deep sleep. If F cries in the night I tend to go in and tuck him back in and give him his dummy. If he doesn't calm down straight away or cries quite soon after, I repeat twice more. Third go I add teething gel. If after these few goes he still won't calm down, I give him medicine and maybe teething granules too to get him out of the tizz. If he's had a bad teething day I tend to use the gel sooner and give him nurofen before bed.