Best root canal clinic in Adambakkam | Why Does My Tooth Hurt When I Eat Something Sweet? If you feel a sharp pain when eating sweets, it could be more than just tooth sensitivity. Sweet foods can trigger pain when there’s a cavity, enamel erosion, or exposed dentin. When enamel wears down, sugar reaches the inner layers of your tooth and irritates the nerve. Sometimes, even small cracks or leaky fillings can cause this reaction. Avoiding sweets won’t fix the issue—it’s a sign your tooth needs attention. Early dental checkups can help detect and treat decay before it worsens. Using a sensitivity toothpaste or fluoride treatment can offer relief temporarily. At Dr. Akkshaya Dental and Aesthetics, Adambakkam, we find the exact cause and restore your comfort and smile.