Burning sensation after eating. Normal?

Based on your description, this does not sound immediately alarming, especially since the ulcer healed around 8 months ago and your dentist did not find any suspicious changes on examination. The dark pigmentation is likely post-inflammatory pigmentation, which can occur after a deep ulcer heals. The thin whitish area may simply represent healed scar tissue, which tends to be more sensitive. A burning sensation only while eating spicy, hot, or acidic foods can occur because the healed mucosa remains more sensitive than the surrounding tissue. However, since the symptoms have persisted for several months, it is worth ruling out contributing factors such as vitamin B12, iron or folate deficiency, oral candidiasis, allergies, dry mouth, or early burning mouth syndrome.

I would recommend: * Avoid spicy, acidic, and very hot foods for a few weeks. * Maintain good oral hygiene and stay well hydrated. * Get blood tests (CBC, Serum Ferritin/Iron, Vitamin B12, and Folate) if not already done. * If the burning persists, worsens, or if the pigmented area changes in size, shape, color, or develops a non-healing ulcer again, consult an Oral Medicine and Radiology specialist for a detailed evaluation. Occasionally, further investigations such as a biopsy may be advised if clinically indicated.

Hello Understand your concern, but burning sensation my be due to sensitive skin over healed ulce or nutritional deficiencies.

Get checked your CBC, Serum Ferritin/Iron, Vitamin B12, Folate.

Avoid spicy, acidic, very hot foods. Use a mild, non-irritating toothpaste. Avoid biting or rubbing the area; check for a sharp tooth or restoration. Stay well hydrated.