According to the USDA, heavy cream can be stored in the refrigerator (opened or unopened) for up to a month. 1  This assumes that it has been kept at a constant refrigerator temperature and not left out on the counter for stretches of time. Discard any cream with mold or an off odor.
However, one of the most common causes of lockjaw, as already mentioned, is TMJ disorder. TMJ disorder refers to a syndrome that affects the temporomandibular joint, commonly called the TMJ, which connects the jaw with the bottom of the skull.
Bilateral Swelling of the Jaw. A condition which causes the jaw to swell up larger than its usual size. The swelling of the jaw can have various causes. Most often it is caused by severe dental problems. Other causes can be bee stings, infections, allergies, bites by other animals, or a trauma. In some cases it can be a sign of a cancer. A swelling of the jaw can progress to the throat, which can be life-threatening.