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.
1 Lockjaw can cause muscle contractions in the jaw and neck. 2  A necrotizing subcutaneous infection can develop. This is a severe infection that can lead to gangrene, the loss and death of tissue.  Gas gangrene, a type of wet gangrene caused by the bacteria known as Clostridia, can occur from an open wound.