An Alaskan brown bear at the Lake Superior Zoo in northeastern Minnesota has a gleaming new silver-colored canine tooth in a first-of-its-kind procedure for a bear.
The 800-pound (360-kilogram) Tundra was put under sedation Monday and fitted with a new crown — the largest dental crown ever created, according to the zoo.
“He's got a little glint in his smile now,” zoo marketing manager Caroline Routley said Wednesday.
The hour-long procedure was done by Dr. Grace Brown, a board-certified veterinary dentist who helped perform a root canal on the same tooth two years ago. When Tundra reinjured the tooth, the decision was made to give him a new, stronger crown. The titanium alloy crown, made by Creature Crowns of Post Falls, Idaho, was created for Tundra from a wax caste of the tooth.
Brown plans to publish a paper on the procedure in the Journal of Veterinary Dentistry later this year.
“This is the largest crown ever created in the world," she said. “It has to be published.”
Tundra and his sibling, Banks, have been at the Duluth zoo since they were 3 months old, after their mother was killed.
Tundra is now 6 years old and, at his full height on his hind legs, stands about 8 feet (2.4 meters) tall. The sheer size of the bear required a member of the zoo's trained armed response team to be present in the room — a gun within arm's reach — in case the animal awoke during the procedure, Routley said. But the procedure went without a hitch, and Tundra is now back in his habitat, behaving and eating normally.
Other veterinary teams have not always been as lucky. In 2009, a zoo veterinarian at Henry Doorly Zoo and Aquarium in Omaha, Nebraska, suffered severe injuries to his arm while performing a routine medical exam on a 200-pound (90 kilogram) Malaysian tiger.
The tiger was coming out of sedation when the vet inadvertently brushed its whiskers, causing the tiger to reflexively bite down on the vet's forearm.
