牙根折裂为非龋性疾病,按形态可分为纵形、斜形及横形折裂。该病常导致牙髓和牙周病变,对咀嚼功能影响较大。为提高对此病的了解,作者查阅了一些资料综述如下。一、病因过去认为引起牙根折裂的原因以外伤性和医源性多见,其次是病理性;近年来,国内学者认为过大的咬合力为牙根折裂的主要原因。 Root fracture is a non-carious disease, according to the morphology can be divided into longitudinal, oblique and transverse fracture. The disease often leads to dental pulp and periodontal lesions, a greater impact on masticatory function. To improve understanding of the disease, the author reviewed some of the information summarized below. First, the cause of the past that causes root fracture causes traumatic and iatrogenic more common, followed by pathological; in recent years, domestic scholars believe that excessive bite force is the main reason for root fracture.