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A recently discovered Neanderthal tooth from a Siberian cave is shedding new light on prehistoric dental care, revealing what may be the earliest known example of cavity treatment in human history-dating back some 59,000 years.
The tooth, found in Chagryskaya Cave in Russia’s Altai Mountains, belonged to an adult Neanderthal who lived between 49,000 and 70,000 years ago. Among dozens of teeth recovered, this particular molar stood out due to a large, irregular hole penetrating deep into the pulp chamber, the sensitive inner part containing nerves and blood vessels. The cavity appeared severe and likely caused considerable pain.
What truly captivated researchers was the presence of fine scratches surrounding the hole, suggesting deliberate manipulation with a tool. Alongside the tooth, archaeologists uncovered small, pointed stone tools made of local jasper, which matched the marks on the tooth. Advanced scanning techniques and experimental replication using modern human teeth revealed that the Neanderthal had essentially drilled out the cavity-an intervention indicating both medical knowledge and skilled craftsmanship.
“This discovery astonished us,” said lead author Alisa Zubova from the Peter the Great Museum of Anthropology and Ethnography. “The individual intuitively understood the source of their pain and took active steps to remove it. Such evidence has never before been found among Neanderthals or even later humans.”
This finding challenges long-standing stereotypes of Neanderthals as simple or brutish, instead highlighting their cognitive and emotional complexity. It suggests they possessed the awareness and manual dexterity needed to perform painful procedures without anesthesia, as well as social bonds that may have supported such care.
Neanderthals are already known to have cared for injured or disabled group members through sharing food and protection, but this tooth offers rare evidence of deliberate medical intervention. While small scratches on Neanderthal teeth have previously been linked to toothpick use or chewing medicinal plants, cavities were uncommon due to their low-carb diets and diverse oral microbiomes.
In a controlled experiment, researcher Lydia Zotkina recreated the drilling process using jasper tools on modern molars, successfully mimicking the Neanderthal tooth’s markings and cavity removal within an hour. She noted the procedure required concentration and fine motor skills-made all the more challenging in a living mouth with inflammation and pain.
“It’s remarkable to consider the strength of will this Neanderthal must have had to endure such a procedure,” Zotkina reflected. “They understood the temporary pain was necessary to relieve a greater suffering.”
Researchers theorize that this dental care took place within a close-knit social group, possibly involving another individual stabilizing the patient’s head during treatment. Alternatively, the Neanderthal may have self-treated, marking a critical evolutionary step from instinctive self-medication observed in other primates to intentional medical practice.
Dr. Gregorio Oxilia, an evolutionary anatomist not involved in the study, praised the discovery as a milestone that redefines our understanding of early medicine. “This evidence pushes back the origins of invasive healthcare by tens of thousands of years and shows that complex clinical awareness was not unique to Homo sapiens but shared with our closest relatives,” he noted.
The Chagyrskaya 64 tooth not only provides fascinating insight into Neanderthal life but also fundamentally reshapes the timeline of human healthcare evolution, revealing a sophisticated prehistoric approach to pain relief and survival.