An Alaskan Brown Bear Receives the World’s Biggest Dental Crown

An unexpected glint now catches the light whenever Tundra opens his mouth. The 800-pound Alaska brown bear has received what officials describe as the largest veterinary dental crown ever created, marking a rare first in wildlife medicine. 

The procedure, carried out at the Lake Superior Zoo, is believed to be the first time a full-metal dental crown has been fitted on a bear. This achievement represents a medical milestone, as it required adapting advanced human-style dentistry to one of the largest land carnivores in North America. 

Treating dental injuries in massive wildlife is far from routine, and until recently, such complex restorations were rarely attempted in animals of this size.

“Tundra the Brown Bear just made dental history! We’re thrilled to share that Tundra has officially received the first-ever full metal crown placed on a bear — and it’s also the largest veterinary crown ever created in the world,” the Lake Superior Zoo team said on Instagram.

Repairing a tooth built for crushing

Tundra’s dental problems began in 2023 when he fractured his right canine, one of the four long, pointed teeth bears rely on for gripping and tearing food. Veterinarians performed a root canal to remove damaged tissue and preserve the structure of the tooth. 

The treatment was successful at first. However, when Tundra later reinjured the same tooth, the situation became more complicated. A previously treated tooth is structurally weaker. Without reinforcement, it risks further fractures or bacterial infection. 

In an animal weighing roughly 800 pounds (360 kilograms) and standing nearly 8 feet (2.4 meters) tall on its hind legs, chewing forces are immense. Any protective solution would need to withstand extraordinary pressure.

Leaving the damaged tooth exposed was not an option. Infection could cause pain, difficulty eating, and potentially serious health complications. The team concluded that a full-coverage crown — essentially a custom metal cap fitted over the entire visible tooth — was the safest long-term solution.

But that didn’t mean this was easy.

Engineering the largest veterinary crown

Creating a crown for a bear is not as simple as scaling up a human version. High precision is critical to avoid any complications. The zoo collaborated with Creature Crowns, a veterinary dental laboratory based in Idaho. Specialists first made a detailed wax cast of Tundra’s damaged tooth to capture its exact shape. 

Using this mold, they fabricated a shiny titanium alloy crown designed specifically for his bite strength and anatomy. 

The final product was a silver-colored, full-coverage crown large enough to be considered the biggest veterinary crown ever produced, according to zoo representatives.

“This massive, custom-made crown was created to keep that tooth protected for the rest of his life,” the Lake Superior Zoo team added.

On June 23, Tundra was fully sedated for the hour-long surgery. Given the bear’s size and strength, safety precautions were extensive. For instance, a trained armed response team remained in the room with a firearm within reach in case Tundra awoke unexpectedly and reacted aggressively. He remained sedated throughout the operation.

The crown was securely fitted over the prepared tooth, sealing it against bacteria and reinforcing it against future fractures. Tundra recovered smoothly and soon returned to eating and behaving normally.

Raising the bar in animal healthcare

This case highlights how veterinary medicine is evolving as zoo animals live longer and receive increasingly advanced care. Complex dental procedures, once reserved for humans and occasionally domestic pets, are now being adapted for large wildlife.

According to Dr. Grace Brown, who led the crown procedure and had also performed Tundra’s earlier root canal, this achievement should be published as a study, as it could help guide other veterinary teams facing similar cases.

“This is the largest crown ever created in the world. It has to be published,” Brown told Associated Press.

She plans to submit the study by the end of this year. For now, Tundra is back in his habitat, reportedly fond of standing atop a large rock and catching treats—flashing a titanium glint that marks a milestone in wildlife medicine.