CONCLUSION: Traumatic occlusal force, periodontal lesions, teeth with root canal therapy are the major causes that led to vertical root fractures.
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.
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。
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