Temporomandibular Joint Disorder (TMD) is a term referring to a number of clinical problems involving the Temporomandibular Joints (TMJs) and associated muscles and structures of the jaw area. Several researchers have found clicking and popping noises in the jaw joints to be present in 40-60% of the general population. Considering that normal, healthy TMJs are completely silent at all times, the 40-60% figure is a rather staggering one to consider. The good news is that TMD symptoms are variable in nature, with most being a mild annoyance. A small percentage of patients with TMD have symptoms which degenerate into crippling chronic pain and limited jaw mobility. A recent National Institute of Health study indicates that over nine million Americans suffer from TMJ pain of some level on a regular basis.