World’s first dental treatment for Sloth Rico at Chester Zoo: A groundbreaking procedure in 2025

Chester Zoo makes history by performing the world’s first-ever endodontic treatment on a two-toed sloth to cure a painful tooth infection.

Rico the sloth undergoing dental treatment at Chester Zoo with expert veterinarians and dental specialists.
Caption: Rico’s toothache was caused by an infection in his molars, and after diagnostic X-rays were taken, it was determined that the infection was severe enough to require a specialized treatment. (Images: Oral Health Group)

Chester Zoo performs groundbreaking dental treatment on two-toed Sloth Rico

CHESTER: In a groundbreaking achievement for both veterinary and dental science, Chester Zoo has made history with the world’s first-ever endodontic treatment performed on a two-toed sloth. Rico, a 25-year-old sloth residing at the zoo, underwent this pioneering procedure to treat a severe tooth infection that had caused him considerable pain. The innovative treatment, which combined expert veterinary care with advanced dental procedures, marks a significant milestone in the field of animal healthcare.

This unique event was made possible through collaboration between Chester Zoo’s skilled veterinarians and dental specialists from Newcastle University. This successful surgery not only highlights the zoo’s commitment to animal care but also demonstrates the importance of conservation efforts for endangered species like the two-toed sloth.

Rico’s dental journey: From toothache to treatment

A pioneering dental procedure

Rico’s toothache was caused by an infection in his molars, and after diagnostic X-rays were taken, it was determined that the infection was severe enough to require a specialized treatment. The procedure performed on Rico was anything but routine. It involved an apicectomy, a surgery that removed infected tissue from the root of the tooth, followed by sealing the area with special cement to prevent further infection.

“Through careful planning and collaboration with Chester Zoo’s experts, we decided to perform the surgery by accessing the tooth from the bottom, a method not commonly used in typical root canal treatments,” said Dave Edwards, clinical fellow at Newcastle University’s School of Dental Sciences. This innovative approach was a crucial part of the surgery’s success.

Rico’s training: Voluntary participation in X-rays

One remarkable aspect of the procedure was the way Rico was trained to voluntarily participate in the process. Zoo keepers worked with Rico over time, teaching him to cooperate with the process by allowing X-rays to be taken. This level of cooperation ensured that the team could carefully plan and execute the treatment with precision. A three-dimensional scan confirmed that traditional root canal methods would not be effective, leading the team to opt for a more advanced technique.

The zoo also shared an update on social media, showcasing their achievement: “World FIRST as Rico the sloth undergoes ground-breaking dental treatment!” The post went viral, sparking excitement about the historic procedure.

The surgery: A three-hour milestone

Three hours of precision surgery

The surgery, which took place in Chester Zoo’s state-of-the-art animal care center, lasted a total of three hours. The team of specialists carefully worked on Rico’s infected molars, removing damaged tissue and ensuring the tooth root was sealed effectively. Unlike typical root canals, where the tooth is accessed from the top, this procedure required the team to approach the issue from below, making it a truly one-of-a-kind operation.

Dr. Fiona Beddis, a dentist from Newcastle University’s School of Dental Sciences, described the procedure as “a step into the unknown.” Despite the challenges, she was thrilled with the outcome, noting, “It was a once-in-a-lifetime opportunity to treat such a rare and beautiful animal.”

The conservation efforts behind the treatment

A step forward in Sloth conservation

The groundbreaking dental procedure was part of Chester Zoo’s ongoing conservation efforts to protect and preserve the two-toed sloth species, which face significant threats from habitat loss and illegal wildlife trade. By taking steps to ensure the health and well-being of individual sloths like Rico, Chester Zoo hopes to raise awareness and contribute to the broader conservation of these incredible creatures.

Rico’s treatment is not just a medical milestone; it is a testament to the importance of ensuring that animals receive the highest standard of care, even in situations that are unprecedented.

Rico’s recovery: Returning to his favorite snacks

Rico’s post-surgery recovery

Since the surgery, Rico has been slowly returning to his usual, leisurely pace of life. As is typical for sloths, his recovery is gradual, but he is already indulging in his favorite snacks once again. The successful outcome of the procedure has been a huge relief for both the zoo’s team and the sloth’s caretakers.

Rico’s case is a powerful reminder of the critical role zoos and conservation organizations play in the health and survival of endangered species. With ongoing efforts like these, the future of the two-toed sloth looks a little brighter.

Conclusion: A historic moment in animal dentistry

Chester Zoo’s pioneering dental treatment for Rico the sloth is a major breakthrough in the field of veterinary care. This world-first procedure highlights the incredible advancements in animal healthcare, as well as the importance of expert collaboration and training. Rico’s recovery and return to his natural behaviors mark a triumphant moment not only for the zoo but also for animal care professionals everywhere.

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