Tongue cleaning is a long-standing oral hygiene practice that dates back to ancient Ayurvedic traditions, where scrapers made of metals such as copper, silver, gold, tin, and brass were commonly used.

In modern times, the practice continues globally, with plastic and stainless-steel tongue scrapers widely available, particularly in India and other parts of Asia.

Today, tongue scraping is increasingly recognized in Western countries as an adjunct to routine oral hygiene, supported by emerging scientific evidence.

Why Is Tongue Cleaning Important?

The surface of the tongue contains numerous papillae that can trap:

• Food debris

• Dead epithelial cells

• Bacteria

This accumulation forms a coating on the tongue, which is a major contributor to halitosis (bad breath) and may also influence overall oral microbial balance.¹

Studies suggest that mechanical cleaning of the tongue can significantly reduce bacterial load and volatile sulfur compounds (VSCs), which are responsible for oral malodor.

See also: Can Your Tongue Really Get Stuck to a Frozen Pole?

Scientifically Proven Benefits of Tongue Scraping

1. Reduction of Bad Breath

Research indicates that tongue scraping is more effective than toothbrushing alone in reducing bad breath, as it directly removes odor-causing bacteria from the tongue surface.

2. Improved Oral Hygiene

Regular tongue cleaning contributes to:

• Lower bacterial count

• Reduced plaque formation

• Improved overall oral cleanliness

3. Enhanced Taste Sensation

By removing the coating layer, taste buds are exposed more effectively, potentially improving taste perception.

4. Adjunct to Periodontal Health

While not a substitute for brushing or flossing, tongue scraping supports overall oral hygiene and may help in maintaining periodontal health when combined with routine care.

Tongue Scraper vs Toothbrush: Which Is Better?

Although many individuals use a toothbrush to clean the tongue, studies suggest that:

• Tongue scrapers remove debris more efficiently

• They exert uniform pressure across the tongue surface

• They reduce bacterial load more effectively than brushing alone

Toothbrush bristles may not adequately reach the deeper grooves of the tongue, whereas scrapers are specifically designed for this purpose.

See also: E-Tongue: The Future of Savoring Flavors Without Eating

Types of Tongue Cleaners

1. Metal Tongue Scrapers

Common materials include:

• Stainless steel

• Copper

• Silver

Advantages:

• Durable and long-lasting

• Easy to clean and sterilize

• Provide consistent pressure

2. Plastic Tongue Scrapers

Widely used in modern oral care products.

Advantages:

• Lightweight and inexpensive

• Easily available

• Flexible design

Which One Is Better?

Both types are effective when used correctly. However:

• Metal scrapers are often preferred for durability and hygiene

• Plastic scrapers may be more comfortable for beginners

There is limited conclusive evidence favoring one material over another in terms of clinical effectiveness; but one study concluded that plastic ones gave better results. ²

How to Use a Tongue Scraper Correctly

1. Extend the tongue outward

2. Place the scraper gently at the back of the tongue

3. Pull it forward with light pressure

4. Rinse the scraper after each pass

5. Repeat 2–3 times

6. Rinse mouth thoroughly

Important: Avoid excessive force to prevent injury.

Possible Side Effects and Precautions

Tongue scraping is generally safe, but improper use may lead to:

• Gag reflex (especially when placed too far back)

• Minor abrasions or irritation

• Discomfort with excessive pressure

Individuals with oral lesions, infections, or post-surgical conditions should consult a dental professional before use.

Clinical Perspective: What Does Research Say?

Scientific literature supports tongue cleaning as an effective adjunct in oral hygiene routines. Evidence highlights its role in reducing oral bacterial load and managing halitosis.

However, it is important to note that:

• It does not replace brushing or flossing

• Benefits depend on consistency and technique

• It should be part of a comprehensive oral care routine

Tongue scraping, rooted in traditional practices, has gained scientific validation as a beneficial oral hygiene measure. By effectively removing tongue coating and reducing bacterial load, it plays a key role in improving breath and supporting overall oral health.

References

1. Outhouse, T. L., R. Al-Alawi, Z. Fedorowicz, and J. V. Keenan. “Tongue Scraping for Treating Halitosis.” Cochrane Database of Systematic Reviews, no. 2 (2006): CD005519. https://doi.org/10.1002/14651858.CD005519.pub2.

2. Dwivedi, Vivek, N. A. Torwane, S. Tyagi, and S. Maran. “Effectiveness of Various Tongue Cleaning Aids in the Reduction of Tongue Coating and Bacterial Load: A Comparative Clinical Study.” Journal of Contemporary Dental Practice 20, no. 4 (2019): 444–448. https://pubmed.ncbi.nlm.nih.gov/31308274/

3. Gopalakrishnan, D. “Is Oral Hygiene Complete Without Tongue Cleaning?” Journal of Indian Society of Periodontology 28, no. 2 (March–April 2024): 153–154. https://doi.org/10.4103/jisp.jisp_258_24.

4. Pedrazzi, V., E. Sato, M. de Mattos, J. C. Lara, and J. Panzeri. “Tongue-Cleaning Methods: A Comparative Clinical Trial Employing a Toothbrush and a Tongue Scraper.” Journal of Periodontology 75, no. 7 (2004): 1009–1012. https://doi.org/10.1902/jop.2004.75.7.1009