Results The predilection age of VRFs was over 40 years old, the predilection teeth of VRFs were molars and premolars, and most teeth with VRFs had periodontal lesions.

• 结果牙根纵裂好发于40岁以上年龄,以磨牙及前磨牙较为多见,均伴有牙周损害。