She actually did quite a number on her tooth - even more than what you can see from the front . The back of the tooth is much more damaged . She 'll have to live with it ( and the teasing from her sister ) until next week when he 'll put a temporary on it , and then a couple weeks later , a porceline crown . He promises to have it all fixed by the beginning of the school year , because is n't this just how every 14 year old girl wants to start Gr .
What may be the reason for their injury ?
Pick the best answer from the following options:
- The tooth was weak and broke off due to poor hygiene .
 - Their tooth had naturally broken off .
 - They had fell and broke their tooth on the ground .
 - None of the above choices .


They had fell and broke their tooth on the ground .