10 Biggest Causes of Tooth Sensitivity
Sensitive teeth can hurt with cold drinks, hot foods or brushing. There is more than one possible cause, so the useful first step is to identify the trigger and have persistent symptoms checked.
What can cause tooth sensitivity?
Ten possibilities to discuss with your dentist include:
Exposed roots from gum recession.
Loss of enamel protection.
Brushing too forcefully.
Acid exposure.
Tooth decay.
A cracked tooth.
A worn or damaged filling.
Gum disease.
Recent restorative treatment.
Recent whitening.
These are possibilities, not a diagnosis or a ranking of which cause is most likely for you. Tell the dentist whether one tooth or several are affected and whether the discomfort stops quickly or lingers.
Can toothpaste help?
Desensitizing toothpaste can help some forms of sensitivity, but it does not repair a crack or cavity. Use it as directed and discuss persistent symptoms. Our toothpaste guide explains how to compare products.
What if the sensitivity began after a filling?
Recent treatment belongs in the history. Read our specific guide to pain after a filling and contact the treating dentist if the symptoms worsen, linger or occur when you bite. Do not assume every new symptom is part of normal healing.
What if I also grind my teeth?
Mention clenching, morning jaw discomfort and changes in your bite at the appointment. Our bruxism information explains how tooth wear and jaw symptoms are evaluated. A guard does not substitute for finding the cause of a painful tooth.
When should I have sensitive teeth checked?
Arrange an examination for recurring sensitivity, a single painful tooth or discomfort that interferes with eating. Review urgent dental care if pain is severe or accompanied by swelling.
Discuss sensitive teeth in Jacksonville
Contact C.J. Henley, DMD on Hendricks Avenue near San Marco. Bring the names of products you use and explain when the symptoms started. A comprehensive dental examination can connect the symptom pattern with the condition of the teeth and restorations.
Further reading: American Dental Association: sensitive teeth.
Updated October 1, 2026.