Final answer:
Mechanoreceptors are the type of nerve endings in the temporomandibular joint that serve as pressure receptors. They respond to physical deformation caused by pressure and other mechanical stimuli, and are essential for proprioception.
Step-by-step explanation:
The pressure receptors found in the temporomandibular joint (TMJ) are mechanoreceptors. Mechanoreceptors respond to physical deformation due to pressure and other mechanical forces. In the given options, the correct type that serves as a pressure receptor in the TMJ is mechanoreceptors, which include several subtypes such as Merkel's disks, Meissner's corpuscles, Ruffini endings, and Pacinian corpuscles. These receptors can detect different types of pressure and touches, such as light touch, vibration, and sustained pressure, and are essential for proprioception, which allows us to perceive the position and movement of our joints.