I had continual headaches until I had them fitted 5 weeks ago. The dentist "built up" two on my lower teeth - one on each side to stop the bite, I also wear a retainer at night to stop the bite together even more. I have had no headaches in these 5 weeks which is wonderful but my lower teeth hurt where they are built up and I cannot break down any food. Anyone any ideas how long this aching with last? I am 50 and was nervous at my age to have braces but will all be worth it in the end