Understanding Teeth Sensitivity: Causes, Symptoms, and Treatment Options

Dr Lily Taheri

Dr Lily Taheri

Principal dentist at Connolly Dental Boutique and the only dentist in Perth with the Mastership certification in Digital Smile Design.

Teeth Sensitivity treatment in Perth


Teeth sensitivity is a common dental problem that affects many people worldwide. It is characterized by sharp pain or discomfort in the teeth when exposed to certain stimuli such as hot or cold drinks, sweet or acidic foods, and cold air. Tooth sensitivity can be caused by various factors, including dental caries, dental enamel erosion, cavities, gingivitis, periodontitis, and dentin hypersensitivity.

It is crucial to address tooth sensitivity to avoid further damage and maintain good oral health. In this article, we will discuss the causes, symptoms, and treatment options for tooth sensitivity, as well as answer some commonly asked questions about this condition. We will also provide tips for preventing tooth sensitivity and maintaining good dental hygiene.

What is tooth sensitivity?

Tooth sensitivity is a common dental problem that causes discomfort or pain in the teeth when exposed to certain stimuli, such as hot or cold temperatures, sweet or acidic foods and drinks, or even cold air. 

It occurs when the protective layer of the teeth, known as the enamel, wears down, exposing the dentin layer underneath, which contains tiny tubules that lead to nerve endings in the tooth. When the stimuli reach these nerve endings, they can trigger pain or discomfort. Tooth sensitivity can range from mild to severe and can affect one or more teeth.

How tooth sensitivity is different from a toothache

Tooth sensitivity and toothache are two different conditions. Tooth sensitivity is characterized by discomfort or pain in one or more teeth in response to certain stimuli, such as hot or cold foods and drinks, acidic foods, or brushing and flossing.

A toothache, on the other hand, is usually a continuous, persistent pain in a tooth or several teeth and may be caused by dental decay, infection, or injury. While tooth sensitivity can be temporary and may not require treatment, a toothache often indicates a more serious dental problem and should be addressed promptly by a dentist.

Types of tooth sensitivity

Tooth sensitivity can present in different ways, and understanding the type of sensitivity can help identify the underlying cause and the appropriate treatment. The following are the common types of tooth sensitivity:

  • Sensitivity to temperature: This type of sensitivity is characterized by sharp pain when consuming hot or cold food or drinks.
  • Sensitivity to sweet or acidic foods: This type of sensitivity can cause a tingling sensation or sharp pain when consuming sweet or acidic food or drinks.
  • Sensitivity to pressure: This type of sensitivity can cause pain when biting or chewing on food.
  • Spontaneous sensitivity: This type of sensitivity can cause sudden, sharp pain for no apparent reason.

Understanding the type of tooth sensitivity can help your dentist identify the underlying cause and develop a targeted treatment plan.

Teeth sensitivity can be a sign of a more serious dental problem, such as tooth decay, gum disease, or a cracked tooth.

Teeth Sensitivity treatment in Perth WA

What causes tooth sensitivity?

Tooth sensitivity is caused by a variety of factors that can affect the tooth’s inner structure, also known as dentin. Some common causes of tooth sensitivity include:

  • Dental caries and enamel erosion

Dental caries, also known as cavities, and enamel erosion can cause tooth sensitivity. When the protective outer layer of the tooth (enamel) wears away or a cavity forms, the inner layer of the tooth (dentin) is exposed, making the tooth more sensitive to hot, cold, sweet, and acidic foods and drinks.

  • Gum disease (gingivitis and periodontitis)

Gum disease can cause tooth sensitivity in several ways. Gingivitis, the earliest stage of gum disease, can cause the gums to become inflamed and sensitive. If left untreated, gingivitis can progress to periodontitis, which causes the gums to recede, exposing the tooth’s root and causing sensitivity.

  • Dentin hypersensitivity

Dentin hypersensitivity is a common cause of tooth sensitivity. It occurs when the dentin becomes exposed, either through enamel erosion or gum recession. This can cause sharp, sudden pain or discomfort when the tooth is exposed to hot, cold, sweet, or acidic foods and drinks.

  • Other causes of tooth sensitivity

Other causes of tooth sensitivity include teeth grinding, brushing too hard, using a hard-bristled toothbrush, consuming acidic foods and drinks, and certain dental procedures such as teeth whitening and dental restorations.

It is important to note that some medical conditions and medications can also cause tooth sensitivity. If you are experiencing tooth sensitivity, it is important to talk to our dentist at Connolly Dental to rule out any underlying medical conditions.

Can tooth sensitivity be prevented?

Yes, tooth sensitivity can be prevented by practicing good dental hygiene. This includes brushing your teeth twice a day with fluoride toothpaste, flossing daily, and using an antiseptic mouthwash. Additionally, avoiding foods and drinks that are high in sugar and acid can help prevent dental caries and enamel erosion, which can contribute to tooth sensitivity. 

Wearing a mouthguard while playing sports or grinding your teeth can also help prevent dental trauma and enamel erosion. Finally, regular visits to the dentist for cleanings and check-ups can help identify and address dental issues that may lead to tooth sensitivity.


In conclusion, tooth sensitivity is a common dental issue that can be caused by a variety of factors such as dental caries, enamel erosion, gum disease, and dentin hypersensitivity. Fortunately, there are several steps you can take to prevent tooth sensitivity from occurring, including maintaining good dental hygiene habits and avoiding acidic and sugary foods. 

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