The Most Common Signs You May Need a Root Canal

May 27, 2026
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Oftentimes, when we encounter some minor dental discomfort, we simply assume that “it’ll be fine” and go away on its own. 

Unfortunately, this simply isn’t the case. Tooth pain, however, bearable at first, doesn’t simply disappear. Even when it subsides, the relief is temporary and, before too long, it returns, usually worse than before. Delay treatment for too long, and the pain may become constant and unbearable, now with a risk of lasting damage to your bite and smile. At this point, many cases are beyond the capabilities of dental fillings, leaving the individual likely facing nerve irritation and a deep dental infection only correctable through root canal therapy.

Here are a few unmistakable signs that your tooth is calling out for a root canal.

Sensitivity to Hot and Cold

Experiencing prolonged and heightened sensitivity to hot or cold temperatures, even after the source is removed, is a possible sign of nerve damage or decay in a tooth. Unlike mild sensitivity, this discomfort often means the tooth’s interior pulp is inflamed or infected and requires immediate attention.

Swollen or Tender Gums

Swelling or tenderness in the gum tissue around a specific tooth points to infection spreading from the tooth's root. In some cases, this swelling is accompanied by a small bump on the gum near the affected tooth, called an abscess, whose presence confirms the need for a root canal.

Dental Discoloration

Sometimes teeth darken or develop a grayish tint. This discoloration isn’t just a cosmetic issue; it can indicate trauma or decay in the tooth's internal tissue (the pulp) that can only be addressed with a root canal.

Deep Decay

Untreated cavities can penetrate tooth enamel and allow bacteria to infect the pulp chamber. Left untreated, this type of infection can cause swelling, intense pain, and, eventually, tooth loss. Root canal treatment cleans out the infected tissue, seals the tooth, and prevents further complications.

Cracking or Breakage of the Tooth

Dental fractures that penetrate deep into a tooth can similarly allow bacterial infiltration, pulp infection, severe, unrelenting pain, and, eventually, tooth loss.

If you notice any of these symptoms, consult your dentist promptly to determine if root canal therapy is the best solution for restoring your oral health.

Gentle, Effective Root Canal Treatment in Greeley, CO

If you’re in Greely and want to learn more about identifying severe dental issues and when to ask your dentist about root canal therapy, contact Dr. Shawn Buffington and the excellent Norco Family Dental team to schedule a consultation.