隐裂牙预后的多因素相关分析  

Multivariate Analysis of Prognosis for 50 Maxillary Premolars Infraction

作　　者：周修能[1] 崔春[2] 边专[1] 

机构地区：[1]武汉大学口腔医学院牙体牙髓科,湖北武汉430079 [2]华中科技大学同济医学院附属同济医院口腔医学中心

出　　处：《口腔医学研究》2012年第7期711-713,共3页Journal of Oral Science Research

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。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 be- tween 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 signifi- cantly related with survival（P〈0.05）, and multivariate analysis broaden periodontium index in X film was inde- pendent prognostic factor. Conclusion： Broaden periodontium index in X film was independent prognostic factor of tooth infraction.

关 键 词：隐裂 预后 COX回归模型 

分 类 号：R781.2[医药卫生—口腔医学]