口腔颌面部瘘主要由牙源性感染引起。牙齿由于龋坏、外伤或其他原因引起的感染,若不及时彻底治疗,髓腔及根管中炎性牙髓及坏疽牙髓、细菌和脓液等可成为感染源,经根尖孔到达牙槽、颌骨及其周围组织,引起口腔颌面部炎症。牙源性化脓病变若未得到彻底的处理,可有不同的结果,其中由于病情发展,脓液可通过牙槽骨壁经粘膜、皮肤排出,在口腔内或颌面部皮肤形成长期不愈的瘘管。临床上对一些瘘管 Oral and maxillofacial fistula caused mainly by odontogenic infection. Teeth due to caries, trauma or other causes of infection, if not thoroughly treated, medullary cavity and root canal inflammatory pulp and gangrene pulp, bacteria and pus can become the source of infection, through the apical foramen to reach the teeth Slot, jaw and surrounding tissue, causing inflammation of oral and maxillofacial region. Odontogenic suppurative disease without thorough treatment, may have different results, of which due to the progression of the disease, pus through the alveolar bone wall mucosa, skin excretion, oral or maxillofacial skin formation of long-term unhealed Fistula. Clinically for some fistula