开不了口,笑掉下巴是口腔科的常见多发病——颞下颌关节疾病。专家提醒患者首次发病时,一定要在医生指导下治疗或复位。据介绍,在颞下颌关节疾病中,颞下颌关节紊乱病是最为多见的一种,发病率最高可达88%。专家称,一般需要经常讲话或下巴须经常保持一定姿势的人容易患上此病,如歌唱 Can not open the mouth, laughing off the chin is a common and frequently-occurring disease in dentistry - temporomandibular joint disease. Experts remind patients when the first attack, be sure to be under the guidance of a doctor or reset. According to reports, in temporomandibular joint disease, temporomandibular joint disorder is the most common one, the highest incidence of up to 88%. Experts say people who often need to talk often or have their chin often in a certain position are prone to the disease, such as singing