牙齿外伤是指牙齿受到急剧创伤,特别是打击或撞击伤所引起的牙体、牙髓和牙周组织损伤。一般分为:牙齿震荡,包括牙周损伤、牙髓损伤、牙体损伤;牙齿折断,包括牙冠折断、牙根折断、冠根折断;牙齿移位,包括牙齿挫入、牙齿侧向移位、牙齿部分脱落。当出现意外的牙外伤时,应注意损伤程度,并注意查明有无颌骨或身体其他部位的损伤。牙震荡是由于较轻外力创伤所致的牙周膜的轻度损伤,通常不伴有牙体组织 Tooth trauma refers to the trauma of the tooth, especially damage to the tooth, pulp and periodontal tissue caused by striking or impact injuries. Generally divided into: tooth vibration, including periodontal injury, dental pulp injury, tooth damage; tooth fracture, including the crown fractures, root fracture, crown root fracture; tooth displacement, including tooth contusion, lateral tooth displacement, Partial tooth loss. In the event of accidental dental trauma, attention should be paid to the extent of the injury and attention should be paid to identify the presence of jaws or other parts of the body. Tooth oscillation is a mild lesion of the periodontal ligament due to a lesser external force trauma usually associated with tooth tissue