一、资料来源:多数是从实习生、进修生、初学者那里获得,少部分是从本科室以及外单位那里获得。二、失败原因:全口托牙装载后,因患者长期缺牙或因长期戴用已不适应的旧托牙导致下颌前伸或偏侧咀嚼习惯,很难取得正确的正中合位置,从而引起托牙的固位和咀嚼功能受到影响。对于这种思 I. Source: Most are obtained from trainees, fellows and beginners, and a small proportion is obtained from undergraduate departments and outside units. Second, the reasons for the failure: Full denture loading, due to the patient's long-term lack of teeth or due to long-term wear has not adapted to the old dentures lead to mandibular advancement or unilateral chewing habits, it is difficult to obtain the correct center position, which caused Tooth retention and chewing function are affected. For this kind of thinking