A dental instrument designed to remove with precision a circular area of gum tissue during dental surgery, typically to allow access to a site for drilling and dental implant placement without the use of a scalpel. It will typically be designed with a handle at the proximal end and a cylindrical hollow tube-like head with a sharp cutting edge at the distal end. It is made of disposable material (e.g., a hard plastic). This is a single-use device.