Whitening with Exposed Roots: Discuss Sensitivity First
When gums have receded, the visible tooth may include root surface as well as enamel. Those areas can differ in color and sensitivity. A whitening plan should consider that variation before you try to make the whole tooth a uniform shade.
Identify the source of discomfort
Tell your dentist where cold or brushing causes sensitivity and whether the symptom is new. Decay, wear, and other conditions can contribute, so do not assume exposed roots explain everything. An examination helps determine what needs attention before cosmetic treatment.
Set a realistic color goal
Bleaching may not produce identical results across different surfaces and restorations. Ask how the proposed approach could affect comfort and what to do if symptoms occur. Do not apply extra gel near the gumline to target a darker area. Gentle fluoride brushing and suitable interdental cleaning remain important, and additional preventive measures may be recommended for your risk. A successful discussion balances the desired appearance with protecting sensitive surfaces, rather than treating an uneven shade as a reason for increasingly aggressive whitening.