DD was 9 when it broke (Feb last year) and she was just sat on the ground in the playground when her friend tripped over her. Unfortunately she didn't manage to get her hands down and smacked into the tooth.
Thankfully she picked up the piece, the office put it in milk and called me. I picked her up from school at around 1pm and we were in the dentists at 2.30pm. The dentist bonded it back on and all was fine until July.
Then on the first weekend of the summer holidays her face started swelling up. I took her back to the denitst and she started on antibiotics. We had 3 visits to the dentist that week and she was taking 2 different antibiotics (adult doses).
The root had obviously been damaged when it first happened so they did root canal work but because of the infection she couldn't have any pain relief injections (it would have spread the infection).
By the end of the 3rd dentist visit the infection still wasn't clearing so she was referred to the Dental Hospital. I was told not to let her eat anything in case the tooth needed to come out under GA. In the end they opened up the root canal work our dentist had done and left it open to drain the infection out.
Unfortunately some of it then pooled in her gum so an incision was made to to clear it (this was when she could finally have pain relieving injections) and it was the first and only time during the whole process that she cried.
April this year (10pm on the night before we're due to fly on holiday) she bit into a Dairy Milk and it broke again. Maybe it was because it was from a vending machine that it was harder than normal?
Luckily we have a private dentist and dental trauma cover (costs us £4/month for a very lovely dentist) so we phoned their helpline and they found us a dentist close to Gatwick who would see her at 8am on a Sunday morning.
We flew at 11.30am the same morning so as you can imagine it was a very stressful & sleepless night. I don't think i relaxed until i stepped off the plane into the sunshine!