US Patent 7131982 Dental scalpel

An improved dental scalpel provides a convenient possibility to make accurate surgical operations into oral cavity with the extraordinary access to the different oral cavity areas. An improved dental scalpel includes a coupling device, a handle comprising an opening in the coupling portion of the handle including an inner thread along handle main axis, and a blade portion comprising a blade holder including the coupling portion at the handle side of the blade holder and a blade on another side of the blade holder.