Malocclusion and Dental Crowding
Learn what the condition is, how it may be detected early, how it is treated or managed, and which breeds or species are linked to it.
Condition snapshot
A concise guide to the condition’s pattern, detection, management and urgency.
This snapshot is a general guide, not a diagnosis or treatment plan. New, severe or worsening signs require veterinary assessment.
About the condition
Malocclusion occurs when a cat’s upper and lower teeth do not meet in a normal, comfortable relationship. Dental crowding means there is insufficient space for teeth to sit in their expected positions. Either problem can be mild and cosmetic or severe enough to cause pain, trauma and difficulty keeping the mouth clean.
Shortened skull shape is an important contributor in brachycephalic cats because the teeth remain essentially normal in number while the jaws are reduced in length. Teeth may rotate, overlap or erupt at abnormal angles. In other cats, inherited jaw length, retained baby teeth, trauma or developmental abnormalities can alter the bite. A lower canine tooth that contacts the palate, for example, can create a painful ulcer each time the mouth closes.
Crowded teeth trap plaque and food more easily, increasing the risk of gingivitis and periodontal disease. Abnormal tooth contact may injure the lips, gums, tongue or palate. Some cats drool, chew awkwardly, avoid hard food or resist having the face touched. Others show no obvious signs until significant dental disease has developed.
A veterinarian examines jaw alignment, tooth position, eruption and any areas where one tooth is damaging soft tissue.
Not every malocclusion requires treatment. A harmless abnormal bite can simply be monitored. Intervention is recommended when tooth position causes pain, prevents normal closure of the mouth, damages tissues or contributes to disease that cannot be controlled effectively with routine dental care.
Bite abnormalities are especially important in kittens because tooth position changes as the jaws grow and adult teeth erupt. A traumatic contact identified early may sometimes be managed more simply than one recognised after months of ulceration, periodontal damage or abnormal wear have developed.
Brachycephalic cats deserve particular attention because crowding may be hidden behind the lips and is not always obvious from the front of the face.
Screening & Early Detection
Kittens should have their bite and tooth eruption checked during routine vaccination and juvenile health visits. These examinations can identify retained deciduous teeth, abnormal jaw growth or adult teeth erupting into traumatic positions while the mouth is still developing.
At home, persistent drooling, difficulty closing the mouth, bleeding, a bad smell, reluctance to chew, food falling from the mouth or a visible tooth pressing into the lip or palate warrants assessment.
A complete dental examination may require general anaesthesia when the cat is painful or detailed assessment of the back teeth is needed. Dental radiographs help identify retained roots, unerupted teeth and periodontal damage caused by crowding. The veterinarian also checks whether the abnormal bite is stable or likely to worsen as the kitten matures.
There is no blood test that screens for malocclusion. Early detection depends on physical examination during growth and routine oral checks throughout life. Breeding animals with severe inherited jaw abnormalities should be assessed carefully because exaggerated skull shape can increase the likelihood of painful dental crowding in offspring.
Assessment focuses on function rather than whether the teeth look perfectly symmetrical. Dental radiographs may be needed to assess retained teeth, abnormal roots or hidden disease.
Treatment & Management
Treatment is only needed when the abnormal bite is painful, traumatic or likely to damage teeth and supporting tissues. Options depend on the exact tooth and the cat’s age. A problematic retained baby tooth may simply be extracted. An adult tooth that repeatedly contacts the palate or lip may require extraction, carefully planned crown reduction with appropriate dental treatment, or orthodontic movement by a veterinarian with suitable dental expertise.
Crowded mouths often need more intensive plaque control because overlapping and rotated teeth are difficult to clean. Professional dental cleaning and treatment of periodontal disease may be required more frequently than in cats with well-spaced teeth. Home tooth brushing can help when the cat tolerates it, but it cannot correct damaging tooth contact.
Pain relief is used when ulcers, extractions or other dental procedures are involved. Follow-up confirms that the mouth closes comfortably and that previously traumatised tissue has healed.
The goal is comfortable function, not cosmetic perfection. Removing a tooth that causes repeated injury is preferable to preserving an anatomically abnormal but painful bite. Long-term management includes regular oral examinations and prompt treatment of periodontal disease, particularly in short-faced cats where crowding remains a lifelong structural issue.
Breeds or species affected
British Longhair
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British Shorthair
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Exotic Shorthair
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Himalayan
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Minuet
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Minskin
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Persian
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Scottish Fold
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Bambino
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Dwelf
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Ukrainian Levkoy
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