Objective To investigate the value of serum procalcitonin(PCT)in assessment of condition of the illness and prognosis in patients with oral and maxillofacial multiple space(OMFMS)infection. Methods A total of 83 patients with OMFMS infection-treated in our department from January 2014 to June 2016-were selected to be served as observation group,and 30 patients with non-infectious disease treated in our department of corresponding period were served as controls.According to whether or not sepsis was develope...