Which term is a circular saw-like instrument used to remove bone or tissue?

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Trephine is a circular saw-like instrument designed to remove a circular plug of bone or tissue. It’s a hollow cylindrical blade that cuts a round section as it rotates, creating a precise circular opening. This tool is used in procedures where access through bone is needed or a bone graft is harvested, such as in certain dental or neurosurgical contexts. The other terms don’t describe a surgical instrument for cutting bone: monasteries are religious communities, anesthesia is a method or drug to block sensation, and hygiene refers to cleanliness practices.