牙根折属于牙外伤中较为严重的一类情况，在年轻恒牙中发生率较高。此类损伤若伴随折断片移位，易造成牙髓组织血液供应受损。若未及时采取适当治疗，可能引发牙髓坏死、炎症性根吸收等继发病变，进而影响牙齿的长期保留。本文报道1例8岁男性患儿上颌中切牙发生多平面水平根折合并冠方移位的复杂创伤病例。治疗方案选用树脂增强纤维带进行弹性固定，并结合咬合调整与防护性垫佩戴。经过2年随访观察，牙髓虽呈现广泛钙化样改变，但临床检查无异常发现，牙齿功能保持正常。

Root fracture represents a severe form of dental trauma, particularly in young permanent teeth. It often leads to displacement of the coronal fragment, compromising the blood supply of dental pulp. Improper management can readily result in complications such as pulp necrosis and inflammatory root resorption, ultimately affecting the long-term survival of the tooth. This article reports a complex case of an 8-year-old male patient with multiple horizontal root fractures accompanied by coronal displacement in the maxillary central incisors. Through a comprehensive conservative approach utilizing resin-reinforced fiber tape for flexible splinting, supplemented by occlusal adjustment and a protective splint, the affected teeth achieved favorable biological healing over a 2-year follow-up period. Although diffuse pulp canal obliteration occurred in the involved teeth, clinical examination revealed no abnormalities and their functional status was good.