Track the trigger and duration
Notice whether cold, heat, sweets, brushing, or biting sets off the feeling. Does it stop immediately, linger, or occur without a trigger? Is it one tooth or a broader area? Mention whitening products, recent dental treatment, and any injury. Those details help the dentist decide what to examine and test, but they do not replace the examination itself.
Look for the cause
Exposed root surfaces, worn enamel, decay, a cracked tooth, and restoration problems can all be associated with sensitivity. The response may involve desensitizing toothpaste, fluoride treatment, changes to brushing technique, or treatment of a specific tooth problem. Ask the dentist to explain why the proposed option fits your findings and what improvement would be reasonable to expect.
Avoid solving it by avoiding care
Use gentle cleaning rather than scrubbing harder or stopping brushing in a tender area. If you have started whitening, discuss the symptoms before continuing. Ask when to review the response to a recommended product and what changes mean you should return sooner. Severe pain, swelling, or pain that disrupts sleep deserves prompt contact; not every painful tooth belongs in the category of routine sensitivity.
GOOD QUESTIONS
A little more clarity.
How long should I try a sensitivity toothpaste?
Follow the product directions and ask your dentist for a review plan based on your symptoms. A tooth with unexplained or worsening pain should be examined rather than managed indefinitely with toothpaste.