What do you call the area of your mouth where your teeth end and the jaw starts to open?

Question

It feels like a tension spring or muscle and can be seen from the inside of your mouth

its almost like a tendon that constricts how far your jaw will open

Answer 1

I believe you are referring to the temporomandibular joint or commonly referred to as TMJ. Check this site for more information on the structure of the joint.

http://en.wikipedia.org/wiki/Temporomandibular_joint_disorder

Answer 2

The muscle under there is called the "Medial Pterygiod" it is one of the muscles that aids in the attachment and movement of your jaw.

Answer 3

IF YOU'RE SPEAKING OF THE AREA WHERE THE LIPS FROM THE UPPER JAW CONNECT TO THE LOWER, THAT'S KNOWN AS THE ORAL COMISSURE.
THERE IS A BUNDLE OF MUSCLES THERE FROM A MUSCLE CALLED THE ORBICULARIS ORIS.

Answer 4

If u r referring to the area at end of ur last molar in ur lower jaw, its called retromolar pad. ur qn is not vry clear.