Earlier this week, I saw my dentist for a lingering toothache in a right molar that began a month ago. My dentist checked the X-ray from my 6-month exam in July. She said the X-ray looks good and prescribed antibiotics in case the tooth is infected. What happens if my tooth still hurts after I finish the antibiotics? – Thanks! Kayla from Des Moines

Kayla,

Since your toothache is a new development, your previous X-rays are no longer diagnostic. A toothache suggests a change in your dental health that requires viewing the entire tooth from crown to root. Unlike a standard bitewing X-ray, a periapical image allows a dentist to look for infection at the root tip.

What Are Diagnostic Tests for Tooth Pain?

If your dentist did not perform any clinical tests beyond a visual check, they may have missed the underlying cause of your discomfort. These tests are standard for identifying the source of dental pain when the cause isn’t visible:

• Pressure sensitivity: Tapping on the tooth helps locate inflammation in the supporting structures.
• Cold and heat trials: Recording the duration and intensity of your reaction to temperature guides the diagnosis.
• Electronic testing: This tool helps determine if the nerve is still functioning or if it has died.

Addressing the Source of Infection

Penicillin may provide temporary relief, but it acts as a “band-aid” rather than a cure for a tooth infection. Antibiotics cannot penetrate the center of the tooth, so the bacteria will continue to thrive and eventually return with more intensity.

Neglecting the source of the infection can lead to serious health risks, including antibiotic-resistant strains that are much harder to treat. Based on your most recent dental experience, you should consult another dentist for a thorough exam. A comprehensive approach will ensure the infection is eliminated.

Lowell, Massachusetts, accredited cosmetic dentist Dr. Michael Szarek sponsors this post. Read how Dr. Szarek strives to give his patients the best dental care in Lowell.