Cavities when left untreated can advance deeper and affect the tooth pulp (tooth nerve). This can lead to swelling at the root tip and cause toothache. Severe infections can also cause swelling of the face, on the side of the affected tooth. Such painful teeth need advanced treatment, referred to as root canal treatment, to clear the infected tissues within the tooth and the tooth root. The root canal space is subsequently filled with a special filling material and the tooth is eventually strengthened with a crown (cap). The dentists at SmileVel can perform quality root canal treatments and restore the tooth health.