Best root canal clinic in Adambakkam | Signs You Need a Root Canal — Don’t Ignore These Warnings Persistent tooth pain, especially while chewing, may indicate a deep dental infection. Sensitivity to hot or cold that lingers is another early warning sign of nerve damage. Swelling around the gums, facial puffiness, or a pimple-like boil near the tooth often signals an abscess. Darkening of a tooth can mean the pulp inside is infected. A bad taste or foul smell from the mouth may point to hidden decay. Ignoring these symptoms can lead to severe pain and tooth loss. Root canal treatment helps remove infection and save your natural tooth. At Dr. Akkshaya Dental & Aesthetics, Adambakkam, we provide painless root canal procedures with advanced technology to restore your smile safely.