口腔颌面部间隙感染占口腔科住院总病例的12.6%左右。颌下间隙感染在口腔颌面部间隙感染中又居首位。婴幼儿,尤其是颌下、口底间隙的感染,80％为腺源性感染,而且多数是由上呼吸道感染引起的(64％左右)。其死亡率为2.5％。婴幼儿起病急骤,临床上常出现猝死。多万资料表明,婴幼儿猝死中,以感染和呼吸道疾病、心肌病最多。本文所指猝死系: Oral and maxillofacial space infections accounted for about 12.6% of the total cases of dental inpatients. Submandibular space infection in oral and maxillofacial space infection in the first place. Infants and young children, especially submandibular and oral floor space infections, 80% of gonorrhea infections, and mostly caused by upper respiratory tract infection (about 64%). The mortality rate was 2.5%. Rapid onset of infants and young children, often sudden death in clinical. Data show that more than million, sudden infant death, with infection and respiratory diseases, cardiomyopathy the most. This article refers to the sudden death: