38-year-old Claire Shorrock permanently disfigured during routine root canal due to dentist's failure to use preventative guard.

38-year-old Claire Shorrock claims she was permanently disfigured during a routine root canal treatment at her dentist in Preston, Lancs. The dentist failed to place a preventative guard before beginning the procedure, causing sodium hypochlorite to enter her tissue and cause her face to swell significantly. Shorrock was taken to the hospital and kept overnight, later discovering her lip had been permanently altered.