Dental Diets: Do They Really Prevent Tartar? — Efficacy and How to Choose Correctly

Oral HealthQ&AMeongsiljang Veterinary Advisory Board

Dental diets are specialized pet foods designed to support oral health by reducing tartar and plaque through the act of chewing. Here’s a veterinary-backed overview of how they work, what to look for when choosing one, and important precautions to keep in mind.

What Are Dental Diets? How Do They Differ from Regular Food?

Comparison of dental food and regular food sizes

Dental diets are specialized foods designed to physically and chemically reduce tartar and plaque as dogs and cats chew. The key point is that the act of chewing itself helps clean the teeth. Unlike regular kibble, which crumbles easily upon entering the mouth, dental food features larger kibble with a fibrous structure that wraps around the teeth and scrubs their surfaces. This can serve as a helpful supplement for pet owners who find it difficult to brush their pets' teeth daily.

The Principles Behind the Actual Efficacy of Dental Diets

According to veterinary nutrition textbooks, the effectiveness of dental diets is based on three main principles: - Mechanical abrasion: The larger kibble size scrapes tooth surfaces when chewed with the molars. Studies have shown that various chewing activities can gradually reduce tartar, gum inflammation, and periodontal bone loss. - Fiber arrangement: The kibble is designed to resist breaking apart easily, wrapping around the teeth as it breaks down. This allows the tooth surfaces to be cleaned for a longer duration during chewing. - Chemical inhibition: Some products contain additives that inhibit plaque and tartar formation, providing chemical support to supplement the mechanical action of chewing. Simply being hard does not make a food a dental diet. At least one of the three principles above must be incorporated into its design.

Regular Food vs. Dental Diets: A Comparison

Item	Regular Dry Food	Dental Diet
Kibble Size	Small and crumbly	Large and must be chewed
Tartar & Plaque Reduction Effect	Almost none	Plaque reduced by about 15–39%, tartar by up to about 64% (varies by study)
Plaque-Inhibiting Ingredients	None	Contains plaque/tartar-inhibiting additives (varies by product)
VOHC Certification	Not applicable	Some products certified
Suitable as Main Food	Yes	Check per product
Price Range	Average	1.5–2 times more expensive

Whether a product has VOHC (Veterinary Oral Health Council) certification can be checked on the product's official website.

Why Is VOHC Certification Important?

The VOHC (Veterinary Oral Health Council) is an independent organization where dental specialist veterinarians verify the plaque and tartar reduction effects of products through clinical trials. The "VOHC Accepted" seal is awarded only to products with scientifically proven efficacy, not just marketing claims. - Plaque Seal: Proven to reduce plaque (bacterial film) - Tartar Seal: Proven to reduce tartar Many dental diets imported into Korea lack this certification. For your pet’s safety, we recommend searching the product name on the official VOHC website before purchasing.

Dental Diets Alone Cannot Replace Brushing

A common misconception is that feeding dental treats or kibble alone eliminates the need for brushing. Veterinary textbooks clearly state that dental diets are an adjunctive measure, not a substitute for brushing. The inner surfaces of the teeth, the gumline, and the spaces between molars are not reached by chewing alone. Research shows that daily brushing is far more effective than dental diets or dental chews. Ideally, combine daily brushing with a dental diet; if that’s not feasible, aim to increase brushing frequency as much as possible. If significant tartar has already accumulated, professional scaling should be performed first, followed by the introduction of a dental diet for preventive care.

How to Choose the Right Dental Food for Your Pet

The right choice depends on your pet’s weight, age, and dental health. - Small-breed dogs: If the kibble is too large, they may swallow it whole without chewing. Always select a size specifically designed for small breeds. - Senior dogs: For pets with weakened teeth, overly hard treats pose a risk of tooth fracture. - Cats: Since cats tend to swallow rather than chew, the fiber structure of the food is particularly important. - Pets with allergies: Check the protein source and choose a product from the same ingredient family as their current diet. When switching foods, gradually mix the new food with the old over 7–10 days.

Key Ingredients in Dental Diets

Safe

폴리인산나트륨(Sodium Hexametaphosphate)

침 속 칼슘과 결합해 치석 형성 차단

Dosage: 제품별 함량 표기 확인

VOHC 인증 제품 다수 포함

Safe

셀룰로오스 섬유(Cellulose Fiber)

알갱이 구조 유지, 치아 표면 마찰

Dosage: 사료 내 배합

Safe

아연(Zinc)

구취 원인균 억제, 항염증

Dosage: 미량 원소 수준

Caution

녹차 폴리페놀(Green Tea Polyphenol)

항균·항산화 작용

Dosage: 보조 성분

일부 제품에만 포함

When to Avoid Feeding Dental Diets

There is no single dog food that suits every pet. Please consult your veterinarian before making a decision in the following situations: - If your pet experiences pain while chewing due to fractured teeth or severe periodontitis - For puppies under six months of age whose baby teeth have not yet fallen out - If chewing is restricted due to jaw abnormalities (malocclusion) - If your pet has chronic conditions requiring a special therapeutic diet, such as pancreatitis or kidney disease In particular, feeding dental care food as the main diet to a pet requiring a therapeutic diet may worsen their underlying condition.

Reviewed by a veterinarian

Dr. Tony — Punnawat Phongkittirak

Veterinarian

A veterinarian who majored in veterinary medicine at Khon Kaen University, Thailand, and completed the IVSA program at North Carolina State University in the United States. Drawing on clinical experience at animal hospitals, he works in the pet healthcare field and is dedicated to building a digital care environment that connects pet parents with veterinarians.

Frequently Asked Questions

Can I feed Dental Diet as my pet’s main meal?

Products certified by the VOHC and labeled as "Complete & Balanced" can be fed as a main meal. Treats and supplementary products should make up no more than 10% of the total daily food intake.

When will I start seeing results?

Clinical studies show that consistent feeding leads to a noticeable reduction in plaque and tartar after 4 to 6 weeks. However, existing tartar can only be removed through professional scaling.

Which is more effective for dental care: dental chews or dental food?

The underlying principle is similar. The main difference is that dental diets provide a consistent, daily effect, while dental chews deliver a more concentrated benefit. Using both together is ideal, but since dental chews are higher in calories, please use them with caution for overweight pets.

Do dental diets work for cats too?

Yes, there are dental diets specifically formulated for cats. However, since cats tend to swallow their food without much chewing, it’s important to choose a product with larger kibble and a well-designed fibrous structure.

If I only feed my pet dental food, can I skip professional dental cleanings?

No, dental tartar that has already formed cannot be removed by dental food alone. If tartar is detected during a regular oral examination, the proper approach is to perform a professional cleaning first, and then use dental food as a preventive measure.

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References

[1] Clinical Medicine of the Dog and Cat, 4th Ed - Dental Nutrition Chapter

[2] Applied Veterinary Clinical Nutrition, 2nd Ed - Commercial and Home-Prepared Diets (Fascetti & Delaney)

[3] Veterinary Oral Health Council (VOHC) Accepted Products List

Dental Diets: Do They Really Prevent Tartar? — Efficacy and How to Choose Correctly

What Are Dental Diets? How Do They Differ from Regular Food?

The Principles Behind the Actual Efficacy of Dental Diets

Regular Food vs. Dental Diets: A Comparison

Why Is VOHC Certification Important?

How to Choose the Right Dental Food for Your Pet

Key Ingredients in Dental Diets

폴리인산나트륨(Sodium Hexametaphosphate)

셀룰로오스 섬유(Cellulose Fiber)

아연(Zinc)

녹차 폴리페놀(Green Tea Polyphenol)

Reviewed by a veterinarian

Dr. Tony — Punnawat Phongkittirak

Frequently Asked Questions

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References