【摘要】 目的:评估隐裂牙的临床检查指标对其治疗预后的影响。方法:分析50例上颌前磨牙的隐裂牙的临床相关资料,寿命表法计算生存率,Kaplan-Meier法绘制术后累计生存率曲线,Log-rankχ2检验行生存曲线之间的比较,COX比例风险回归模型进行单因素和多因素分析。结果:全组病例随访时间3～24个月,随访期间拔除9例(18%),1、2年生存率分别为94%、82%。单因素分析提示影响隐裂牙预后的临床检查指标为牙周探诊指标和X片牙周膜增宽指标。多因素分析显示X片的牙周膜增宽指标是影响隐裂牙预后的独立指标。结论:X片的牙周膜增宽指标是影响隐裂牙预后的独立临床指标。其临床意义在于隐裂牙的牙周破坏程度与隐裂牙的预后密切相关。更多还原

【Abstract】 Objective: To evaluate the prognostic value of infractions from clinical examination for tooth infraction.Methods: A study was carried out in 50 patients with maxillary premolar infraction.Survival rates were analyzed with the actuarial life-table method.Kaplan-Meier and Log-rank tests were used to explore the correlation between survival rates and clinical parameters.Multivariate and univariate COX propotional hazards model were used to investigate the correlation between clinical parameters and survival time.Results: The follow-up duration ranged from 3-24 months.The mortality was 82%.The 1-and 2-year cumulative survival rates were 94% and 82%.Through a COX model analysis,univariate analysis revealed that probing periodontium index in X film were significantly related with survival(P<0.05),and multivariate analysis broaden periodontium index in X film was independent prognostic factor.Conclusion: Broaden periodontium index in X film was independent prognostic factor of tooth infraction.更多还原