
I was worried to say the least because at christmas id left my trays out for 3 hours which was the longest id ever done normally 30 mins and no more, anyway after 3 hours they felt tight and after 8 hours the tops felt like a new set, even though they had been in for a week and the bottoms were very strange because id had them in for 8 weeks and could feel that the teeth had tried to retreat back to there original crooked position.