Long-muzzled dogs — Greyhounds, Collies, Dobermans, Salukis — spread 42 teeth across a jaw long enough to hold them comfortably, so crowding is rare. The tradeoff is different: a narrow mandible with thin bone between roots, unusually tall canine roots that extend deep toward the jaw's midline, and far more gumline length to keep clean than a short-faced dog ever has.
What does extra muzzle length change?
Spacing, mostly. Where a Pug's premolars press against each other, a Doberman's sit with visible gaps between them, called diastemata. Saliva flows through those gaps, food does not lodge in them, and the tongue can reach more of each tooth. That is genuinely protective.
But the same elongation narrows the jaw. A Greyhound's mandible at the level of the first molar can be only a few millimeters thick on either side of the root. Dentists describe these jaws as having a low bone-to-root ratio, meaning the tooth occupies a large fraction of the available bone. Lose a couple of millimeters of that bone to inflammation and the structural margin shrinks fast.
Which problems replace crowding?
The list looks nothing like the brachycephalic one:
- Gingival recession on the canines and carnassials, exposing root surface that has no enamel to protect it.
- Vertical bone loss along the long roots rather than the horizontal pattern seen in shorter jaws.
- Mandibular fracture risk during extraction of the first molar, because so little bone surrounds it.
- Fractured canine tips, common in dogs bred to run and grab.
- Sheer surface area — more linear gumline means more places for a routine to miss.
Sighthounds in particular show heavy calculus and early periodontal changes despite having roomy, well-spaced mouths. Retired racing Greyhounds are the classic example, and the reasons appear to include genetics, saliva composition, and years of soft diets rather than crowding.
Why is the lower jaw so vulnerable?
Because the lower first molar is enormous and the bone around it is not. In a long, narrow mandible, that tooth's two roots run deep and the cortical bone on either side may be thinner than a credit card in places. Veterinary dentists take this seriously enough that extraction of a lower first molar in a Greyhound or Italian Greyhound is often planned with pre-operative radiographs and a sectioning technique specifically to avoid fracturing the jaw.
Owners can't see any of this. What they can do is keep inflammation away from those roots, because bone loss is what erodes the safety margin in the first place.
How does the risk profile compare across skull types?
Neither column is better. They fail differently, on different timelines, and a routine built for one is a poor fit for the other. Our overview of what happens during a professional cleaning explains why radiographs matter more in the long-muzzled group.
Is brushing easier in a long mouth?
Access is better and the job is bigger. You can actually see the teeth you're working on, and most long-muzzled dogs open willingly. But there is roughly twice the linear gumline of a small flat-faced dog, and people tend to run out of patience before they run out of teeth.
Work back to front rather than front to back. Almost everyone starts at the incisors, gets thirty seconds of cooperation, and never reaches the carnassials — which is where the disease actually is. Reversing the order puts your best effort where it counts. Ask your veterinarian to chart each tooth at annual visits, too; a written record beats memory when you're tracking slow change across a long arcade.
What routine fits this anatomy?
Daily disruption of the outer gumline on the cheek teeth, plus something that reaches the back of the mouth on days when brushing doesn't happen. Larger dogs chew longer and harder, so a chew sized correctly for the jaw stays in contact with the molars long enough to matter.
Brushless Toothpaste Protection+ is built with a ridged exterior and a softer center that carries astaxanthin, a red carotenoid derived from Haematococcus pluvialis algae and studied for its antioxidant properties. Give it as a source of that ingredient and as a reason for a big dog to work their back teeth for several minutes. It complements brushing rather than replacing it — that distinction matters, and the WSAVA global dental guidelines are clear that home care supplements professional care rather than substituting for it.
If you're choosing chews for a powerful jaw, our guidance on chew hardness is worth reading first.
Frequently asked questions
Do Greyhounds really have worse teeth than other breeds?
Retired racing Greyhounds frequently present with heavy calculus and advanced periodontal changes at surprisingly young ages. Proposed explanations include an inherited component, saliva chemistry, and years on soft or ground diets during racing careers. Pet-line Greyhounds fare somewhat better, but the breed is still flagged as high-risk in most veterinary dental references.
Why do my Collie's teeth look longer than they used to?
That appearance almost always means the gum has receded rather than the tooth having grown. Exposed root surface is darker, duller, and softer than enamel, and it is more sensitive. Recession does not reverse on its own, so the goal becomes halting further loss through consistent plaque control and professional assessment.
Is a long-muzzled dog less likely to need extractions?
Less likely to need them for crowding, yes. But they still need them for advanced periodontal disease, fractured teeth, and non-vital roots. The extractions themselves tend to be technically harder because of the deep roots and thin surrounding bone, which is why pre-operative imaging is standard.
How far back do I actually need to brush?
All the way to the last upper molar, which sits roughly below the outer corner of the eye. Most owners stop several teeth short of it. Lifting the lip at the cheek and angling the brush backward reaches that zone without opening the jaw, which most dogs tolerate far better.
Does a narrow jaw mean smaller chews?
Size the chew to body weight and bite force, not to jaw width. A narrow-jawed Doberman still generates substantial pressure and needs a chew large enough that it can't be swallowed in pieces. Supervise the first several sessions with any new chew and take it away once it shrinks near swallowing size.