Things to avoid in the diet for patients with dentin sensitivity.

icon  20 August, 2026 Nha Khoa Như Ngọc Evaluate:  
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1. Causes of Tooth Sensitivity

The structure of a tooth consists of the crown and root. The crown is covered by a layer of enamel approximately 1–2 mm thick, beneath which lies the dentin, and at the innermost part is the dental pulp, which contains numerous small blood vessels and sensory nerves.

  • Worn or damaged tooth enamel: When the enamel is worn down due to mechanical factors such as teeth grinding, biting hard objects, brushing too hard, etc., or chemical factors such as acid reflux and frequent consumption of acidic foods and beverages, the underlying dentin may become exposed. This can cause tooth sensitivity and discomfort, especially when consuming hot, cold, or highly acidic foods and beverages.
  • Gum recession and periodontal tissue deterioration: When the periodontal tissues become damaged or deteriorate, the root surface may become exposed. Since the tooth root is not covered by enamel like the crown, the exposed dentin is more susceptible to external stimuli, leading to tooth sensitivity and discomfort.
Nhu Ngoc Dental Clinic

Source: Internet

2. Foods and Beverages to Avoid When You Have Sensitive Teeth

● Very hot foods and beverages: Foods and drinks such as hot soup, tea, coffee, etc. can stimulate sensitive teeth and cause feelings of discomfort or sensitivity.

Nhu Ngoc Dental Clinic

Source: Internet

● Very cold foods and beverages: Ice cream, iced drinks, cold water, etc. can also cause tooth sensitivity or pain. If you cannot completely avoid these foods and beverages, you can use a straw to reduce direct contact between the drink and your teeth.

Nhu Ngoc Dental Clinic

Source: Internet

● Acidic foods and beverages: Acidic foods and drinks such as lemons, lemon juice, pickled foods, carbonated soft drinks, etc. can erode tooth enamel and worsen tooth sensitivity. Therefore, people with sensitive teeth should limit their consumption, especially when their teeth are already sensitive or painful.

Nhu Ngoc Dental Clinic

Source: Internet

● Very hard foods: Frequently eating or biting hard foods can cause enamel cracks or chips, and may even damage the tooth structure, leading to or worsening tooth sensitivity. Therefore, you should limit foods such as hard candies and foods with hard shells. Avoid chewing ice and never use your teeth to open bottle caps, bite, or tear hard objects.

Nhu Ngoc Dental Clinic

Source: Internet

In summary, tooth sensitivity is commonly characterized by a sharp, uncomfortable sensation or pain when the teeth come into contact with hot, cold, acidic foods and beverages, or other external stimuli. It can be caused by various factors, including tooth enamel erosion, tooth decay, cracked or fractured teeth, gum recession, and frequent consumption of acidic foods and beverages.

If tooth sensitivity persists or occurs unexpectedly, you should not ignore it. Visit a dental clinic for an examination to determine the underlying cause and receive appropriate and timely treatment.