A root canal is a treatment to repair and save a badly damaged or infected tooth. The procedure involves removing the damaged area of the tooth (the pulp), cleaning and disinfecting it and then filling and sealing it. The common causes affecting the pulp are a cracked tooth, a deep cavity, repeated dental treatment to the tooth or trauma. The term "root canal" comes from cleaning of the canals inside the tooth's root.

Why a Root Canal?

Your enamel normally protects your teeth, but any major breach in it could necessitate a root canal. Teeth affected by advanced tooth decay or large cavities may need a root canal before any other restoration can take place. Severe damage to a tooth due to an accident or injury can also lead to a root canal. A large crack or break allows pathogens to invade the nerves and pulp deep inside the tooth, and many dentists recommend a root canal to avoid this painful condition. 

Some symptoms that indicate that you may need a root canal are: 

·  Frequent tooth and gum pain

·  A large visible cavity that compromises the integrity of the tooth

·  Extreme sensitivity to heat, cold and pressure

·  A foul taste or odor near the afflicted tooth even after brushing your teeth

·  Pus that drains into your mouth

  · Swollen lymph nodes in your neck and jaw near the affected tooth