Doctor , I have the worst toothache !   How long have you had this pain ?   For about a week or so , but it ’ s gotten really bad in the last couple of days .   Did you do anything that might have aggravated your tooth ?   You know , I was eating jawbreakers in the movies the other day , and I accidentally bit down really hard on one .   What kind of toothbrush do you use ?   I just use a regular hard bristle toothbrush .   Does it bother you when you eat something really cold ?   Yes , it definitely bothers me more when I do that . 