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Chewing Sugarfree Gum & Oral Health

Chewing Sugarfree Gum & Oral Health

Chewing sugarfree gum after eating or drinking has been proven to complement a healthy oral care routine1.

Clinically proven to increase saliva production, chewing sugarfree gum helps stimulate the body’s most important natural defence against tooth decay, and in turn helps protect your teeth by:

  • Restoring pH balance in the mouth, neutralising plaque acids

  • Helping to clear away food debris that may have lodged in teeth and gums. Chewing sugarfree gum can reduce the amount of time teeth are exposed to a potentially acidogenic challenge, which can lead to weakening of tooth enamel

  • Naturally remineralises acid spots on teeth, as the minerals in saliva are supersaturated with the same minerals found in teeth

Over the past three decades, more than 100 independent studies have been published on the benefits of chewing sugarfree gum on oral health, and how it goes hand in hand with a healthy oral care routine.

For more information about EXTRA, visit our website: www.wrigleyextra.com.au or www.wrigleyextra.co.nz


1Dawes C, Macpherson LM (1992). “Effects of nine different chewing gums and lozenges on salivary flow rates and pH.” Caries Res 26: 176-182.

What happens in the mouth after eating and drinking?

What happens in the mouth after eating and drinking?

Plaque is a soft, sticky substance made up of bacteria, which forms in the mouth building up near gums and between teeth. After eating and drinking bacterial plaque forms, producing plaque acids that lower the pH in the mouth to dangerously low levels, increasing the risk of tooth decay.

The primary challenge to oral and dental health originates from the foods we eat. The carbohydrates we consume are used by the bacteria in plaque found on tooth surfaces. These bacteria generate organic acids that lower the pH level of the oral cavity.

As the pH drops below 5.7, the acids from the bacterial fermentation begin to dissolve minerals on the tooth surface, creating a demineralised subsurface lesion. These reversible lesions are clinically described as ‘white spots’. The low pH state can last hours after eating occasions. Over time, the acid can dissolve areas of the tooth and create a cavity that must be filled.

Increased saliva flow can accelerate the clearance of food debris and dietary carbohydrates from the mouth and has been documented by several researchers (2).


(1)Macpherson LMD, Dawes C. “Effects of salivary film velocity on pH changes in an artificial plaque containing streptococcus oralis after exposure to sucrose.” J Dent Res. 1991; 70: 1230-1234.

ADA & NZDA

Professional associations worldwide recognise the oral health benefits of chewing

Twenty-two national dental associations around the world now recognise the scientific evident supporting the oral health benefits of chewing sugarfree gum.

The Australian Dental Association (ADA), New Zealand Dental Association (NZDA) and the FDI World Dental Federation recognise the scientific evidence supporting the benefits of chewing EXTRA® sugarfree gum.

The ADA and NZDA awarded their endorsement to EXTRA® following an analysis of independent scientific research. For additional reassurance, consumers should look for products that are endorsed by the ADA’s Seal of Approval, or the FDI World Dental Federation’s ‘Seal of Acceptance’.

Further details about oral health and the benefits of chewing can be found at www.ada.org.au and www.nzda.org.nz

© 2012 Wm. Wrigley Jr. Company. All Rights Reserved. Extra, 5, Eclipse, Hubba Bubba, Juicy Fruit, P.K., Airwaves, Starburst, Skittles and all other trademarks and affiliated designs are trademarks of the Wm. Wrigley Jr. Company or its affiliates.