口腔颌面部，尤其是牙齿的诊治大部分都在门诊牙科综合椅上进行，周转快，且每个病员的诊治都需要很多物品和器械，绝大部分操作都在口腔内进行，如：口腔检查、拔牙、牙体病的诊治、牙周粘膜病的治疗、义齿的镶配等，病员中可能有传染病、慢性病或病原携带者，在诊治时常接触 Oral and maxillofacial areas, especially the majority of dental diagnosis and treatment are carried out in the dental chair, fast turnover, and each patient’s diagnosis and treatment require a lot of items and equipment, most of the operations are carried out in the mouth, such as: oral Inspection, extraction, diagnosis and treatment of dental diseases, periodontal mucosal disease treatment, denture in the match, the patient may have infectious diseases, chronic diseases or pathogen carriers, often in contact with the diagnosis and treatment