Mandibulectomies and Maxillectomies

Maxillectomies and mandibulectomies are advanced oral surgical procedures performed in dogs and cats to treat severe conditions affecting the upper (maxilla) and lower (mandible) jaws. These surgeries involve the partial or complete removal of sections of the jaw and are often essential for managing oral tumours, severe trauma or congenital defects. While these surgeries may sound daunting, they can be life-saving and significantly improve a pet’s quality of life when performed appropriately.

What are Maxillectomies & Mandibulectomies?

Maxillectomy: This surgical procedure involves the removal of part or all of the maxilla, the upper jaw bone. Maxillectomies are usually performed to treat tumours that affect the upper jaw, palate or surrounding tissues.  Depending on the tumour’s location and size, a maxillectomy can be partial, subtotal or total.

Mandibulectomy: This involves the removal of a portion or the entirety of the mandible, the lower jaw bone. Mandibulectomies are indicated when dealing with tumours, severe infections or traumatic injuries to the lower jaw.  Similar to maxillectomies, these procedures can range from partial to complete removal, depending on the extent of the disease or damage.

“Jaw surgery in pets isn’t about appearance — it’s about removing disease and restoring comfort.”

Indications for Maxillectomies & Mandibulectomies

Oral Tumours: The most common indication for these surgeries is the presence of benign or malignant tumours in the oral cavity. Common tumours requiring surgical removal include fibrosarcomas, acanthomatous ameloblastomas, squamous cell carcinomas and melanomas. Surgery aims to remove the tumour completely and prevent recurrence, significantly extending the pet’s life expectancy.

Severe Trauma: Pets that experience severe jaw fractures due to accidents, fights or falls may require these surgeries if the jaw is too damaged to heal correctly. Maxillectomies and mandibulectomies help restore functionality and prevent chronic pain.

Infections and Osteomyelitis: Chronic infections or osteomyelitis (bone infection) that do not respond to conventional treatments may necessitate surgical intervention. Removing the affected bone can eliminate the source of infection and promote healing.

Congenital Defects and Deformities: Some pets are born with jaw abnormalities that impact their ability to eat, chew or breathe properly. Surgical correction through maxillectomy or mandibulectomy can help improve these functions and enhance the pet’s quality of life.

Why Are These Surgeries More Complex Than Other Procedures?

Specialised Techniques: Maxillectomies and mandibulectomies involve intricate surgical techniques to remove affected bone while preserving as much healthy tissue as possible. The procedures often require precise cutting, reconstruction and suturing to ensure proper healing.

Advanced Imaging and Planning: These surgeries are highly planned using advanced imaging techniques like CT scans and X-rays. Detailed imaging helps the surgeon map out the tumour’s extent and develop a tailored surgical approach, minimising the impact on critical structures like blood vessels, nerves, and teeth.

Post-Surgical Reconstruction: Reconstructing the jaw after surgery is crucial for maintaining the pet’s ability to eat, drink and carry out normal activities. This may involve using bone grafts, tissue flaps or other advanced reconstructive techniques.

Specialised Pain Management and Post-Operative Care: Given the complexity of these surgeries, managing pain and ensuring a smooth recovery is critical. This includes appropriate anaesthesia, pain relief and a carefully monitored diet to support healing.

“With the right care, most pets adapt quickly and go on to live happy, pain-free lives after jaw surgery.”

Post-Surgery Care & Recovery

Recovery from maxillectomies and mandibulectomies can vary depending on the extent of the surgery and the pet’s overall health. Key aspects of post-surgery care include:

  • Dietary Adjustments: Pets may need a modified diet, such as soft or liquid foods, during the recovery period to prevent stress on the surgical site.
  • Wound Care: Regular monitoring and cleaning of the surgical site help prevent infections and promote healing.
  • Follow-Up Appointments: Regular veterinary check-ups are crucial to monitor the pet’s recovery, assess healing and address any complications promptly.

Conclusion

Maxillectomies and mandibulectomies are complex but vital surgeries that can significantly improve the lives of dogs and cats suffering from severe oral conditions. By understanding these procedures, pet owners can make informed decisions and work closely with their veterinarians to ensure the best outcomes for their furry companions. If your pet has been diagnosed with an oral tumour or other jaw-related issues, consulting with a veterinary oral surgeon is the first step towards effective treatment and recovery.

Meet the Author

Bec Tucker

Specialist Veterinary Dentist – BVSc (Hons) MANZCVS (Small Animal Dentistry and Oral Surgery)

Diplomate, American Veterinary Dental College™

Hi, I’m Dr Bec Tucker, and my journey into veterinary dentistry has been unexpected yet incredibly fulfilling. In fact, dentistry wasn’t on my radar at all when I graduated with a BVSc (Hons) from the University of Sydney in 2007. I was fortunate to meet veterinarians who had found their passion for dentistry, and their encouragement and enthusiasm shifted my perspective. Through continuing education lectures and workshops, I went from not fancying dentistry and oral surgery to genuinely loving it.

FAQs

What exactly is a mandibulectomy or maxillectomy, and why is my vet recommending it for my pet?

A mandibulectomy involves removing part or all of your pet’s lower jaw, while a maxillectomy removes part or all of the upper jaw. These surgeries are usually recommended to treat aggressive oral tumours, severe trauma, chronic infections, or congenital jaw defects that can’t be fixed with less invasive treatments.

Is this type of jaw surgery going to improve my pet’s quality of life, or is it just cosmetic?

While the idea of jaw surgery can be scary, these procedures aren’t cosmetic — they aim to remove disease, reduce pain, and restore function. Many pets go on to eat comfortably and enjoy a good quality of life once they’ve healed.

What happens during recovery after a mandibulectomy or maxillectomy, and what should I expect?

Recovery typically involves pain management, dietary adjustments (like soft or liquid food for several weeks), wound care, and regular follow-up check-ups. Pets might look different at first and need some time to adjust to eating and drinking normally.

Are there risks or complications I should know about before I decide on this surgery?

Like any major surgery, jaw resections carry risks such as infection, swelling, difficulty eating or drinking right after surgery, and changes in facial appearance. However, veterinarians plan carefully and support recovery to minimise any issues.

Will my pet still be able to eat, drink and play normally after a portion of their jaw is removed?

Yes — most pets adapt very well. Many eat normally within days and return to their favourite activities once healing progresses. Some may need temporary feeding support or soft foods early on, but long-term quality of life is typically excellent.

Key Takeaways

Mandibulectomies and maxillectomies are life-improving, not cosmetic

These procedures are performed to remove serious disease, reduce pain, and improve comfort when less invasive options aren’t effective.

Most pets adapt far better than owners expect

After healing, many pets return to eating, drinking, and enjoying daily activities with minimal long-term impact on their quality of life.

Recovery requires support, but it’s manageable

Short-term changes, such as soft diets, pain management, and close monitoring, help pets adjust as their healing progresses.

Early intervention leads to better outcomes

When jaw surgery is performed early—especially for oral tumours—treatment options expand and long-term prognosis improves.

Next steps

For Pet Owners

Are you concerned about your pet’s dental health? Call 1300 866 848 or fill out the contact form. We’ll coordinate with your primary vet to ensure the best outcome.

For Vets & Nurses

We’re here to help. If you’d like to refer a patient, please call us at 1300 866 848 , complete the referral form or email us with a brief case summary, relevant radiographs and lab results.

For advice and treatment guidance, email us with a brief case summary, relevant radiographs and lab results.

 


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