What is present in desensitizing toothpaste & how does it work?

Tooth Health

Tooth Paste For Sensitive teeth

Do your teeth hurt after having an ice-cream, drinking hot beverages, or eating sweet and sour foods? If yes, it’s time for you to realize that you may have “sensitive teeth” and consult your dentist. Tooth sensitivity, or dentine hypersensitivity, can possibly occur when your tooth enamel wears away or decays, and the dentine becomes exposed. Dentine contains little tubules that link to the sensory nerves on the inside of the tooth. When dentine is exposed to extremely cold and hot temperatures, these nerves are easily stimulated, resulting in discomfort1.

Sensitive teeth can be protected. Depending on the cause, your dentist may suggest you to try desensitizing toothpaste. After several applications, such toothpastes help block sensation traveling from the tooth surface to the nerve2, so you can return to eating and drinking cold and hot foods without any issues.

Here’s how desensitizing toothpaste works:

Desensitizing toothpastes contain some active agents, such as potassium, fluorides, and strontium salts3. Potassium nitrate and sodium fluoride are widely used to protect from tooth sensitivity4. Potassium nitrate decreases the fluid flow through the tubules by clogging them, decreases the level of activity of dental sensory nerves and prevents or reduces the sensation signals from reaching the brain5.

Fluorides, on the other hand, strengthen tooth enamel6. With the help of fluorides, the tooth enamel can regain the minerals7 which it has lost during the decay process. Sodium fluoride, when applied to the exposed dentine, forms an effective barrier and results in desensitization of dentine8.

Sensodyne is a dentist recommended brand for sensitive teeth. It offers a wide range of toothpastes like Sensodyne Fresh Gel, Sensodyne Repair & Protect, Sensodyne Fresh Mint and Sensodyne Deep Clean and is working to create a future free of sensitivity for everyone. Sensodyne toothpastes protect from the short, sharp sensation of sensitive teeth with twice daily brushing. If sensitivity still persists after 4 weeks of use, talk to your dentist for more information and determine the best solution for your sensitive teeth.


1) AGD Factsheet. Sensitive Teeth. Available from: http://www.agd.org/public/OralHealthFacts/files/pdfgenerator.aspx?pdf=FS_SensitiveTeeth.pdf&id=139738. Accessed on June 12, 2017.
2) ADA. Sensitive teeth-causes and treatment. JADA. 2003; 134: 1691.
3) Mahale et al. IOSR-JDMS. 2015; 14(10): 21-24.
4) Wang et al. J Dent. 2015; 43(8):913-23.
5) Borges et al. World J Dent. 2012; 3(1): 60-67.
6) Carr A. What causes sensitive teeth, and how can I treat them? Available from: http://www.mayoclinic.org/healthy-lifestyle/adult-health/expert-answers/sensitive-teeth/faq-20057854.  Accessed on June 13, 2017.
7) Miglani et al. J Conserv Dent. 2010; 13(4): 218–224.
8) Gupta et al. J Indian Soc Pedod Prevent Dent. 2010; 2(28): 68-72.
9) Data on file. GSK
9) About Sensodyne. Available from https://www.sensodyne.in/about-sensodyne.html. Accessed on August 16, 2017.

*Trade marks are owned by or licensed to the GSK group of companies

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