Possible Clues:

• Cut one's milk teeth
• Cut one's dental fixtures
• Where to drive to get the trouble in the mouth
• Get cutters - the golfer's starting point must come first
• The supporter first to suffer in infancy
• For baby to do this is enough to drive the parent mad
• Children give trouble when they drive you silly and drive on 31 across over the end of it (6)
• Prepare to drive the thing one might do my mouth
• Ultimately right to be agitated when son's gone missing - as a small child will do
• To do this may cause 1 across for the young