We’ve put together a clear, easy-to-understand guide for pet parents on when orthodontic treatment is needed for dogs, including the ideal timing, costs, and important precautions. We’ll also walk you through key cases such as malocclusion and retained deciduous teeth.

| Item | Type 1 (linguoversion) | Type 2 (overbite) | Type 3 (underbite) | Type 4 (unilateral difference) |
|---|---|---|---|---|
| Characteristics | Lower canine teeth point inward | Upper jaw long and lower jaw short | Lower jaw longer than upper jaw | Left-right asymmetry |
| Common breeds | All breeds | Some breeds with a genetic predisposition | Bulldog, Shih Tzu, Pekingese | All breeds |
| Correction recommendation | High (pain) | Medium | Low (breed standard) | Case-by-case judgment |
| Recommended timing | Early, around the start of permanent tooth eruption | Early intervention recommended | When a functional problem occurs | Early examination |
In breeds such as Bulldogs and Shih Tzus, underbite is the breed standard, so it is often not a candidate for correction

See a Vet Immediately If You Notice These Signs
If you notice any of the following signs, your dog may have a malocclusion or dental issue: ① Frequently opening the mouth or chewing on only one side; ② Dropping food or refusing to eat; ③ Bleeding, pus, or a foul odor coming from the mouth; ④ Canine teeth piercing the upper gum or palate; ⑤ Retained baby teeth in the same position even after adult teeth have erupted. Many dogs endure dental pain silently, so it’s important for owners to regularly check their mouths.

General Anesthesia Risks and Pre-Anesthetic Examinations
Dental correction for dogs is performed under general anesthesia. Since young puppies, senior dogs, and small-breed dogs may face higher anesthesia risks, pre-anesthetic physical examinations and blood tests (including complete blood count, total protein, BUN, etc.) are essential. Additionally, if regular oral care (such as brushing and professional cleanings) is not maintained after the procedure, periodontal disease can recur. Establishing a daily tooth-brushing routine is the best preventive measure.

A veterinarian who majored in veterinary medicine at Khon Kaen University, Thailand, and completed the IVSA program at North Carolina State University in the United States. Drawing on clinical experience at animal hospitals, he works in the pet healthcare field and is dedicated to building a digital care environment that connects pet parents with veterinarians.
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[1] Clinical Medicine of the Dog and Cat, 4th Ed - Chapter 5: Oral Cavity and Dentition
[2] Wiggs's Veterinary Dentistry: Principles and Practice, 2nd Ed - Orthodontics Chapter
[3] The Dog Care Handbook, Things I Wish My Vet Had Told Me - Dental Care Section