Why are my teeth so sensitive?

Dentinal Hypersensitivity is the chief cause of sensitive teeth. 

Dentinal hypersensitivity, referred to as sensitive teeth, presents as a short, sharp, sudden burst of pain and can lead to considerable physical discomfort and psychological distress for patients. It affects millions of people worldwide. 

What is Dentinal Hypersensitivity?

Dentinal hypersensitivity occurs when the protective layers of the teeth—namely enamel and cementum—are worn away, exposing the underlying dentin. Dentin is the softer tissue that contains microscopic tubules (tiny channels) which lead directly to the nerve endings in the tooth’s pulp. When the protective layers are compromised, these tubules become exposed, allowing external stimuli to reach the sensitive nerve endings, resulting in pain.

Common Triggers

• Cold foods or drinks 

• Hot beverages 

• Sugary or acidic foods 

• Cold air 

• Brushing teeth with a hard-bristled toothbrush 

Causes

Several factors can contribute, including: 

• Gum Recession: Gum recession occurs when the gum tissue surrounding the teeth wears away or pulls back, exposing the tooth’s root. Since the root lacks protective enamel, the underlying dentin becomes exposed to external stimuli, leading to sensitivity. 

• Enamel Erosion: Consuming acidic foods and drinks can erode the enamel over time, thinning the protective layer and exposing the dentin underneath. 

• Bruxism (Teeth Grinding): Clenching or grinding your teeth, especially at night, can wear down the enamel, leaving the dentin exposed. 

• Aggressive Toothbrushing: Brushing too hard or using a hard-bristled toothbrush can gradually wear down the enamel and irritate the gums, causing recession and sensitivity. 

• Dental Procedures: Some people may experience temporary sensitivity after undergoing dental treatments such as teeth whitening, fillings, or cleanings. This usually subsides within a few days or weeks but can be uncomfortable in the interim. 

• Cracked or Decayed Teeth: Damage to the teeth, such as cracks or cavities, can expose the inner layers of the tooth and lead to sensitivity. 

To learn about the symptoms and treatments, click here