
According to numerous reports, Kannada actor Swathi Sathish’s root canal procedure has left a side of her face fully swollen. The reports add that while the actor was told by doctors that the swelling would subside within a few hours, the left side of her face remains swollen even after 20 days. Local news media reports say she was allegedly given salicylic acid instead of a local anaesthetic agent. It is believed that the actor is considering legal recourse.
Here’s what you need to know about the condition.
“Root canal is a dental procedure that involves the removal of the soft center of the infected tooth, and the pulp — made up of nerves, connective tissue, and blood vessels,” said Dr Nikita Mehra, consultant endodontist, Masina Hospital, Mumbai.
What happens during the procedure?
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The entire pulp is removed from the crown, and roots of the involved tooth are cleaned and disinfected thoroughly and then filled with root canal filling material. “The procedure is usually performed by a general dentist or a specialist endodontist under local anaesthesia, and is very safe,” added Dr Mehra.
Risk factors
Complications can involve minor swelling, pain or discomfort which generally subsides on successful completion of the procedure. “Rare anaesthetic complications can involve paresthesia, which is basically a prolonged feeling of numbness or loss of sensation in the area but is generally self-correcting,” she said.

When can severe complications occur?
Severe complications, according to Dr Mehra, occur when a “patient is accidentally injected with solutions other than the local anesthetic agent such as sodium hypochlorite which is used for cleaning the canal, or salicylic acid as witnessed, allegedly, in the current scenario,” she asserted.
Prevention
To prevent severe complications, look for an experienced general dentist or a registered specialist endodontist who have their expertise in performing successful root canal procedures.
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