牙创伤可以在单颗牙齿发生也可累及多颗牙，牙脱出最容易累及多颗牙，冠折也常累及多颗牙。
Dental trauma may happen to a single tooth or more. Avulsion was most like to accompany with other traumatic teeth. Crown fracture was also like to involve more than one tooth.
7月底公布的一揽子措施平静了对希腊、爱尔兰和葡萄牙的紧张神经，该措施长期担忧希腊的债务重组，而不是担忧对经济造成的创伤。
The package of measures announced in late July calmed nerves about Greece, Ireland and Portugal, with the long-feared restructuring of Greek debt not as traumatic as had been feared.
(牙合)创伤确实可以导致颞下颌关节的退行性改变。
The occlusal trauma is really a factor inducing degenerative changes of the TMJ.
结论：牙结构的薄弱环节是牙隐裂发生的内在因素，创伤性(？)力是促使牙隐裂发生的外在动力。
CONCLUSION: Structure weak area of tooth was the internal cause of cracked-teeth occurrence, and traumatic occlusal force was the external factor tha.
结论：咬颌创伤，牙周疾病，牙髓无活力等是导致牙根纵裂的重要原因。
CONCLUSION: Traumatic occlusal force, periodontal lesions, teeth with root canal therapy are the major causes that led to vertical root fractures.
需要根管治疗的最主要特征是因牙腐烂过程，牙破裂或牙片剥落，或牙外科创伤导致的不可逆转的牙髓炎和牙浆坏死。
The main indications for RoCT are irreversible pulpitis and necrosis of the dental pulp caused by carious processes, tooth cracks or chips, or dental trauma.
牙周优势菌lps作用于单核巨噬细胞，诱导产生各种细胞因子和炎性介质，参与牙周病的炎症激活和组织创伤。
LPS involves in the inflammatory process and tissue destruction during periodontal diseases through inducing mononuclear macrophages to produce various cell factors and inflammatory mediators.
临床常见牙齿创伤导致根折，单一折裂线的病人经保守治疗后多能愈合，而伴有多个折裂线的复杂根折病人如果处理不当，常导致失牙。
Root fracture with single fracture line can often healed after simple treatment, while root fracture with mult-fracure lines was often extracted.
临床常见牙齿创伤导致根折，单一折裂线的病人经保守治疗后多能愈合，而伴有多个折裂线的复杂根折病人如果处理不当，常导致失牙。
Root fracture with single fracture line can often healed after simple treatment, while root fracture with mult-fracure lines was often extracted.
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