Quick answer: Chewing cleans a dog's teeth through mechanical abrasion: the repetitive scraping of a firm surface against tooth enamel physically dislodges plaque before it hardens into tartar. Duration and firmness are the two variables that determine whether a chew actually does the job. A chew that's consumed in five minutes doesn't generate enough contact time to make a difference. That's why we built Fangz to last hours at minimum, with a single chew often lasting days to weeks depending on how hard your dog goes at it. Hours, not minutes.
Most people assume "dental chew" just means a chew shaped vaguely like a toothbrush. It doesn't. The shape is marketing. The mechanism is mechanical abrasion. And most dental chews on the Australian market are too soft and too fast to deliver enough of it.
Here's how the science actually works, why duration is the key variable most brands don't talk about, and what the Veterinary Oral Health Council says separates the real ones from the pretenders.
What is plaque and why does it matter?
Plaque is a soft, sticky film of bacteria that forms on a dog's teeth within hours of eating. Left alone, it mineralises into tartar (calculus) within 24 to 72 hours. Once it's tartar, no amount of chewing removes it: you need a vet with a scaler.
Plaque is the window. That's when chewing can intervene.
The bacteria in plaque are the source of bad breath, gum inflammation (gingivitis), and if left for years, periodontal disease, which is the leading dental condition in dogs. Studies consistently find that over 80% of dogs show signs of periodontal disease by age three. Plaque control isn't cosmetic. It's foundational.
The mechanism: how chewing physically removes plaque
When a dog chews a firm substrate, several things happen at once.
First, the chew presses against the tooth surface and slides along it. That friction is abrasion, and abrasion is what removes plaque. It's the same principle as a toothbrush on human teeth: a slightly rough surface dragged across enamel, repeatedly, lifts the biofilm.
Second, saliva production increases dramatically during active chewing. Saliva is mildly antibacterial and helps rinse loose debris from the gum line. It doesn't remove plaque on its own, but it's a meaningful co-factor.
Third, the chewing action exercises the gums. Gentle pressure on gum tissue supports circulation and can help maintain healthier gum-to-tooth margins over time.
The key word in all of this is "firm." A chew that compresses and disappears under bite pressure doesn't generate sustained abrasion. It needs to hold its shape long enough to scrape. This is why the textured collagen surface of a Fangz chew works differently to a soft dental stick that crumbles in seconds.
Why duration is the variable nobody talks about
Here is the uncomfortable question for the dental chew category: how long does your dog actually chew it?
A Dentastix-style dental stick, which leads with cereal, starch, and humectant on its publicly printed Australian ingredient list, is typically gone in under five minutes for a medium-sized dog. Five minutes of chewing generates very little abrasive contact, spread across the entire chew duration, much of it on the molar surfaces only.
Compare that to a long-lasting collagen chew. Fangz is air-dried slowly over about 2 to 4 weeks, which creates a density that doesn't compress quickly under bite pressure. The chew stays firm, the surface contact is sustained, and that sustained contact is what generates meaningful abrasion against the tooth surface. A Fangz chew lasts hours at minimum, and a single chew often lasts days to weeks depending on how hard your dog goes at it across multiple sessions. That cumulative contact time is the difference. If you want to build a Fangz pack and try the duration yourself, start with one chew and track how many sessions it survives.
The Veterinary Oral Health Council (VOHC) is the independent body that evaluates dental products for dogs and cats. Their seal of acceptance is awarded to products that demonstrate measurable plaque or tartar reduction in controlled trials, requiring at least a 20% average reduction versus a control group across two blinded studies. A product has to sustain enough surface interaction to produce that measurable result: duration and firmness are what drive that contact.
More chewing time equals more abrasion equals better plaque control. A chew your dog finishes in three minutes is not a dental chew. It's a snack.
Firmness vs hardness: the tooth-safety line
There is a critical distinction between a firm chew and a hard chew. This is where the conversation about dental benefit and tooth safety intersects.
A firm chew holds its shape and generates good abrasion. A hard chew, one that does not yield to bite pressure, can fracture teeth. The "slab fracture" of the carnassial tooth (the large upper premolar dogs use for shearing) is one of the most common dental injuries vets see, and it is disproportionately caused by very hard chews.
The general veterinary guideline is the "thumbnail test": if you press your thumbnail into a chew and it leaves no mark, the chew is too hard. Antlers pass no mark. Yak chews, which are pressure-cured to an almost stone-like density, pass no mark. Hard nylon chews pass no mark. Each of these is associated with tooth fractures, a finding that is well-documented in veterinary literature.
Fangz sits in the right zone. The air-drying process creates density that resists quick consumption, but the collagen structure softens with saliva during chewing. That softening is the safety mechanism. The chew generates firm-enough abrasion to support dental hygiene, without reaching the hardness threshold where enamel fracture becomes a risk.
You can verify this yourself: press a Fangz chew with your thumbnail before the dog starts. You'll feel resistance. After five minutes of chewing, press again near the worked end. It yields. That's the difference.
The comparison: what each chew type actually delivers
| Chew type | Approx. chew duration | Firmness level | Softens with saliva | VOHC-accepted options | Tooth fracture risk |
|---|---|---|---|---|---|
| Collagen chew (Fangz) | Hours per session; one chew lasts days to weeks | Firm | Yes | None listed at time of writing | Very low |
| Yak milk chew | 20 to 60 min | Rock-hard | No | No | High (vet-reported) |
| Deer antler | 30 to 90 min | Rock-hard | No | No | High (vet-reported) |
| Rawhide | 15 to 45 min | Soft when wet | Quickly goes limp | One (Tartar Shield Soft Rawhide) | Low but chemical/blockage risk |
| Bully stick | 10 to 30 min | Medium | Somewhat | None listed | Low |
| Wheat-based dental stick | 3 to 8 min | Soft | Yes (fast) | Some products | Very low |
| Nylon chew (hard) | Indefinite | Rock-hard | No | No | High |
Duration figures are approximate and vary by dog size and chewing intensity. Fangz lasts hours per session at minimum; a single chew commonly lasts days to weeks across multiple sessions, depending on how intensely your dog chews. Yak and antler fracture risk is vet-reported; see the thumbnail test guideline from the American Veterinary Dental College (AVDC).
The verdict: Yak chews and antlers score well on duration but fail the thumbnail test. Wheat-based dental sticks pass the hardness test but are consumed too quickly to generate sustained abrasion. Long-duration, firm-but-yielding collagen chews occupy the only zone where both variables are favourable simultaneously.
Does chewing replace brushing?
No. Brushing is still the gold standard. Daily brushing with a dog-safe toothpaste and a soft brush, ideally applied to the outer tooth surfaces where plaque accumulates fastest, is the single most effective home care practice for canine dental health.
That said, most dogs don't tolerate daily brushing. Most owners don't manage it either. The realistic question isn't "chewing OR brushing?" but "what else can I do that actually makes a difference?"
Long-duration chewing is the most practical complement to brushing. It generates meaningful abrasion on the back molars and premolars that a brush often misses, and it does it daily without a fight. Dental chews don't replace brushing but they make a real difference when brushing isn't happening consistently, which is most households.
What about the gum line?
Plaque accumulates most aggressively at the gum-to-tooth margin, the sulcus. A toothbrush, angled at 45 degrees into that margin, can reach it. Most chews cannot. The chewing action generates abrasion primarily on the exposed tooth surface, not deep into the sulcus.
This is one reason chewing complements brushing rather than replacing it. Brushing cleans the margin. Chewing handles the exposed crown.
For dogs where gum disease is already a concern, always get a vet assessment. No chew, including ours, is a treatment for existing periodontal disease.
The 10% rule and dental chews
Australian veterinary guidelines recommend that treats and chews should account for no more than 10% of a dog's daily caloric intake. This applies to dental chews too, even high-protein ones.
Fangz chews are about 93% protein and about 1% fat (Goat's Milk is about 82% protein, about 2% fat), which makes them nutritionally lean relative to most treats. The 10% cap is still a sensible guide. One chew per day, sized appropriately for your dog's weight, typically sits comfortably inside the limit. See our guide to how many chews a day is safe for a dog for the calorie maths.
Where Fangz isn't the answer
We're not going to pretend this is the chew for every dog.
If your dog is a gulper who swallows chunks without chewing them, any long-lasting chew poses a blockage risk. Always supervise. If your dog has existing dental disease, talk to your vet before starting any chew regime. If budget is the primary driver and cost-per-chew matters more than cost-per-hour-of-engagement, there are cheaper options: they just won't last as long or generate as much abrasion.
Fangz is made for dogs that chew. It's designed for the owner who wants the chew to actually do something while it lasts. If that sounds like your dog, the Fangz Build Your Pack page lets you choose the right size and flavour combination to start.
Try a Fangz chew
Three ingredients. Air-dried for up to four weeks. Made by Helen and John in Brisbane. No wheat, no glycerin, no preservatives.
Build your Fangz pack and choose a size
Related reading:
- Best dental chews for dogs in Australia
- Are yak chews safe for dogs? What vets actually see
- Collagen for dogs: the complete guide
- Best long-lasting dog chews in Australia (2026)
Sources
- Veterinary Oral Health Council (VOHC): product acceptance criteria and seal methodology: vohc.org
- PMC (2023): "Long-Lasting Chews Elicit Positive Emotional States in Dogs during Short Periods of Social Isolation," Frontiers in Veterinary Science, via pmc.ncbi.nlm.nih.gov/articles/PMC9951671/
- American Veterinary Dental College (AVDC): thumbnail test guideline for hard chew safety; AVDC 2024 position statement: "We cannot recommend any chew toy or bone that does not yield under a thumbnail test": avdc.org
- American Veterinary Medical Association (AVMA): periodontal disease prevalence in dogs (80–90% of dogs show signs by age three), general dental health guidance
- VOHC trial protocol requirements: minimum 20% average plaque or tartar reduction vs controls across two blinded studies: vohc.org/trial-protocol-requirements/