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目的总结晚期后牙牙根纵裂的主要因素。方法晚期后牙牙根纵裂患者45例,根据临床表现、离体牙及X线片进行临床分析。结果 45颗患牙拔除36颗,1例上颌第一磨牙进行患根截根术,6例下颌第一磨牙进行患根分根术,2例下颌第一磨牙进行患根半切术,减小颊舌径,完善根管治疗,最后进行全冠修复。结论晚期后牙牙根纵裂的主要因素与年龄大、牙髓退变、口腔余留牙少、持续性咬合创伤、不适合的桩钉、牙周病变以及承受力过大有关。
Objective To summarize the main factors of root rupture in advanced posterior teeth. Methods 45 cases of posterior longitudinal root fracture of the posterior teeth were analyzed clinically based on clinical manifestations, isolated teeth and X-ray films. Results 36 teeth were removed from 45 teeth, 1 case of maxillary first molars underwent root rhizotomy, 6 cases of mandibular first molars underwent root ablation, 2 cases of mandibular first molars underwent radical mastectomy, Tongue diameter, improve root canal treatment, the last full crown repair. Conclusions The main factors of the longitudinal root posterior cleft in late posterior teeth are associated with age, pulp degeneration, remaining oral residual teeth, persistent occlusal trauma, unsuitable pegs, periodontal lesions and over-bearing capacity.