Embodiments of the innovation relate to a jaw range of motion device that includes a conical base having a first end and a second end and a helical ridge carried by the conical base and disposed between the first end and the second end. The helical ridge and the conical base define a channel between adjacent helical ridge portions. The jaw range of motion device also includes a handle disposed at the second end of the conical base. When a user inserts the jaw range of motion device between his teeth, the user can apply a self-directed manual force to the device by generating a twisting motion on the handle to provide an incremental jaw range of motion.