I had two root canals during Xmas. Everything was going fine until the dentist started manually "drilling" out the dead nerve. When she got to the bottom, I don't think I got enough numbing shot cause a sharp nerve pain shot up my brain. The next pain I felt was when I saw the bill. Haven't had any cavity for 3 yrs. Not sure if the regular checkup, brushing, flossing would've prevented it.
