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.
TMJ disorders are usually caused by a blow or an impact to your jaw, joint erosion and arthritis damage. However, muscle fatigue and muscle tension can cause TMJ disorders, especially if you habitually clench your jaw or grind your teeth.he TM joint is located on either side of your face just in front of your ears, where your skull and jawbone meet. Certain vitamin supplements can help reduce the symptoms associated with TMJ either by affecting your muscles directly, or by treating the underlying causes of TMJ disorders.