Do Dental Chews Actually Work? What the Research Says

Quick Answer

Yes - but only the right kind. Dental chews work through mechanical abrasion (scraping plaque off as your dog chews) and, in some cases, added enzymes or minerals that fight tartar. The catch: most supermarket "dental treats" are built from cereal, glycerine and starch - ingredients with zero dental benefit. The chews that actually work are firm, long-lasting, and made from real, single ingredients your dog has to properly work at.

Dental chews can genuinely improve your dog's oral health - reducing plaque, tartar and bad breath - but it depends entirely on what's in them and how your dog chews. A chew that's gone in ten seconds flat isn't doing much. A chew that takes twenty minutes of proper gnawing is doing real work.

Written by the Bark Yeah team - Australian natural dog treat makers, hand-packing single-ingredient chews since day one.

How do dental chews actually clean teeth?

It comes down to mechanical abrasion. As your dog chews, the physical texture of the chew scrapes against the tooth surface, breaking up soft plaque before it hardens into tartar. This is the same principle as brushing - friction removes buildup - except your dog is doing the work themselves, one satisfying gnaw at a time.

Some chews add a second layer of benefit: natural enzymes, or minerals like calcium and phosphorus (found in things like goat horn and kangaroo tendon), which support tooth strength as your dog chews. Others rely purely on texture and time.

What dental chews can't do is replace brushing entirely or fix existing dental disease. Think of them as a genuinely useful daily habit, not a substitute for real veterinary dental care.

What does the research actually say?

Clinical studies on chewing and dental health consistently point to the same conclusion: regular mechanical chewing reduces plaque and tartar accumulation compared to no intervention at all. The Veterinary Oral Health Council (VOHC) - the industry body that reviews dental product claims - awards its seal to products with demonstrated plaque or tartar control in controlled trials.

Worth knowing: the VOHC list is useful, but it's not the full picture. Getting VOHC approval requires two funded clinical trials - a process that mostly only large multinational brands can afford. Plenty of genuinely effective natural chews (single-ingredient, minimally processed) never go through this process simply because it's cost-prohibitive for smaller producers, not because they don't work.

The dental chews that don't actually work

Here's where a lot of "dental treats" fall short. Many mainstream dental sticks are built from:

• Wheat flour and wheat gluten
• Glycerine
• Powdered cellulose
• Corn starch or rice flour

These ingredients hold a shape and taste fine to a dog, but they contribute nothing to dental health beyond very light abrasion - and some soften too quickly to do much scraping at all. If your dog demolishes a "dental stick" in under a minute, ask yourself what it actually achieved.

What makes a natural dental chew effective

The chews that genuinely support dental health tend to share three things:

1. Firm, long-lasting texture - enough resistance that your dog has to properly work the chew, not just swallow it
2. Single, real ingredients - no fillers to water down the mechanical or nutritional benefit
3. Appropriate size and hardness for your dog - a chew too soft won't scrape effectively; too hard, and it risks tooth fracture in aggressive chewers

This is exactly why we built our Natural Dental Chews Range the way we did. No cereal fillers, no glycerine - just real, single-ingredient chews that take genuine effort to get through:

• Natural Bully Stick Dog Chews - a firm, long-lasting texture that's ideal for daily dental maintenance
• Natural Goat Horn Dog Chews - naturally rich in keratin and mineral content, built for dogs who need a real challenge
• Natural Kangaroo Tendon Dog Chews - a tougher, sinewy texture great for scraping plaque on committed chewers
• Natural Shark Cartilage Dog Chews (Thicker and Thinner cuts) - naturally rich in chondroitin, with a texture that suits different chewing strengths

If you're not sure which suits your dog, our Power Chewers Guide breaks chews down by chew strength and dog size - or read our full comparison, Bully Sticks vs Goat Horns vs Kangaroo Tendons vs Shark Cartilage: Which Chew Is Best for Your Dog's Teeth?, for a closer look at which one suits your dog's chew style. Want to try the full range? The Natural Dog Chews Bundle is the easiest way to find out what your dog actually prefers.

How often should dental chews be given?

Most dogs benefit from a dental chew several times a week as part of a regular routine - daily, if your vet's happy with the calorie load for your dog's size and activity level. Consistency matters more than frequency here: dental chews work by preventing plaque before it hardens into tartar, so gaps of a week or more between chews reduce the benefit significantly.

Dental chews work best alongside - not instead of - brushing, especially for dogs prone to dental disease (small breeds and brachycephalic dogs are typically higher risk).

FAQ

Do dental chews really clean dog teeth?
Yes, through mechanical abrasion as your dog chews. Effectiveness depends on the chew's texture, hardness and how long your dog spends chewing it - a chew gone in seconds does very little.

Are natural dental chews better than commercial dental sticks?
Natural, single-ingredient chews avoid the cereal fillers and glycerine common in commercial dental treats, and typically offer firmer, longer-lasting texture - meaning more genuine scraping time.

Can dental chews replace brushing?
No. They're a valuable daily habit that reduces plaque buildup, but brushing remains the gold standard for dental care. Use both where possible.

How long should a good dental chew last?
As a general guide, an effective dental chew should take at least 15-20 minutes of active chewing. Anything gone in under a minute is unlikely to provide meaningful dental benefit.

Are dental chews safe for all dogs?
Most dogs do well with dental chews, but hardness should be matched to your dog's age, jaw strength and chewing style. Puppies and senior dogs with dental issues may need softer options - check with your vet if you're unsure.

Sources: Veterinary Oral Health Council (VOHC) - VOHC Seal criteria and accepted products list.