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.
Jaw - broken or dislocated. The most common cause of broken or dislocated jaw is accident or trauma involving a blow to the face. This may be the result of a motor vehicle accident, industrial accident, recreational/sports injury, or other accident. It may also result from assault.