下颌骨炎症或下颌骨附近其它组织的感染极易引起咀嚼肌的顽固性挛缩(因支配其肌肉的神经受刺激后高度兴奋所致)。临床表现为张口困难或是根本张不开(0.2-0.5厘米)造成病人极大的痛苦,并给口腔临症检查带来了很大的不便。如果不能即时解除刺激神经的种种因素,则“牙关紧闭”状态久而久之将招来下颌骨“假性”或“真性”强直的危害,更为病人终身的不幸。 Inflammation of the mandible or infection of other tissues in the vicinity of the mandible can easily cause intractable contractures in the masticatory muscles, which are highly stimulated by the nerves that govern their muscles. Clinical manifestations of mouth opening difficulties or simply not open (0.2-0.5 cm) caused great suffering to the patient, and to the oral clinical examination brought great inconvenience. If you can not immediately lift the various factors that stimulate the nerves, then the “closed” state of the passage of time will lead to the mandible “false” or “true” tonic harm, more patient life-long misfortune.