Dental water additives, chews or brushing: what actually works for a dog's teeth?

Owners who would rather not brush are offered plenty of alternatives: something to add to the water bowl, something to chew, a powder for the food. Some of these have evidence behind them, some have marketing behind them, and none of them does what a brush does. Here is how to think about each one.

Start with what plaque is

Plaque is a soft film that forms on the teeth after every meal and hardens into tartar within days. The only thing that reliably disrupts it along the gum line, where it matters, is mechanical contact: bristles moving across the tooth surface. Anything that does not touch the gum line is working at a disadvantage from the start.

Brushing

A soft brush and a pet toothpaste, used daily on the outer surfaces at a 45-degree angle to the gum line, is the one method that reaches the places plaque collects. Thirty to forty seconds covers a dog's whole mouth. Petsmile Professional Pet Toothpaste is VOHC Accepted for plaque control in dogs; pair it with a compact bamboo brush for a small dog or the long-handled large breed brush for a big one. The barrier is never the method; it is getting the dog to accept it, which a taste-first week usually solves. Our FAQ has the steps.

Dental chews and chew toys

Chewing rubs surfaces across the teeth and loosens soft food debris, and a textured toy such as our tyre rope flosser can carry pet toothpaste in its grooves. Some edible chews carry the VOHC seal for plaque control, which means an independent council has reviewed evidence for that specific claim; many do not. Chewing rarely reaches the gum line of the back teeth, and hard chews break teeth, so apply the thumbnail test and supervise. Useful between brushes; not a replacement.

Water additives

A water additive is the easiest thing in the world to use, which is its whole appeal. Its limitation is the same as its appeal: it never touches the gum line with any force. A few water additives carry the VOHC seal, which is worth looking for, and the rest make claims that nobody has independently reviewed. If you use one, check the species and the claim on the label, make sure your dog still drinks normally, and treat it as an extra rather than a plan.

Powders for the food

Food powders marketed for teeth sit in the same category as water additives: easy, and working at a distance from the gum line. We sell a probiotic powder, and it is worth being clear that it is a complementary feed that supports normal digestion. It is not a dental product and we make no claim about teeth or breath for it.

How to read a VOHC seal

The Veterinary Oral Health Council awards its seal to products whose manufacturers have submitted trial evidence for a specific claim, either plaque control or tartar control, for a specific species. The seal does not mean a product is better than brushing; it means its claim was reviewed. Look for the exact wording and the species. Petsmile's seal, for instance, is for plaque control in dogs.

What none of them do

No brush, chew, additive or powder shifts tartar that has already set, and none is intended to diagnose, treat, cure or prevent any condition; that includes everything Petdentist® sells. A dog with brown deposits on the back teeth, red or bleeding gums, persistent bad breath or a tooth that looks wrong needs a vet first. Home care then keeps the clean mouth clean.

A sensible combination

1. Daily brushing: non-negotiable, under a minute.
2. Chewing most days on a toy that passes the thumbnail test, after the brush.
3. A VOHC-sealed chew or additive if you want an extra, read for species and claim.
4. A weekly look inside the mouth and a yearly vet check.

Fresh water should always be available whatever you do; it is the one bowl-side habit that matters for every dog.

Questions people ask

Is a water additive safe for cats as well as dogs?

Only if the label says so. Species matter, and cats are more sensitive to many ingredients than dogs. Check the label and ask your vet if unsure.

If I use a VOHC-sealed chew, can I skip brushing?

A sealed chew helps, especially for a dog that will not be brushed yet, but it does not reach the gum line the way a brush does. Use it while you work through the taste-first steps, not instead of them.

How quickly does brushing make a difference?

Most owners see cleaner-looking back teeth and fresher-smelling breath within four to six weeks of daily brushing. If there is set tartar, brushing alone will not change it and your vet needs to look.

Read next: Dental chew toys: how they fit a brushing routine, Why daily dental care matters for dogs, Shop best sellers.

About the author. Dr Deepak Songra BDS (GDC 68552) is a dental surgeon with more than 35 years in clinical practice and the founder of Petdentist®. He is not a vet. He lives with Merlo, the Cavapoo you will see across this site.

This article is general information about daily care, not veterinary advice. Petdentist® products are non-medicinal daily-care products for dogs and cats and are not intended to diagnose, treat, cure or prevent any disease. If you are worried about your pet, please see your vet. Petdentist® is the trading name of Pet Dentist L.L.C-FZ, Meydan Grandstand, 6th Floor, Meydan Road, Nad Al Sheba, Dubai, UAE. UK orders are dispatched from Northampton.