I got the personal moulds from my dentist (£200). She advised I use them whilst I sleep at home and I’ve got an appointment to see her again in four weeks. I’ve used them twice this week because my teeth are already sensitive (I use sensodyne daily which usually does the trick) and I’m getting a lot of sensitivity and pain. My gums bled the first night but they have been okay the second time. Anyone done this before and have tips on how to cope with the pain and discomfort? They are looking whiter already. Did you reduce the length of time you wore them? Did you put toothpaste instead of the gel on every second night to help with the sensitivity?