自体牙移植术前难度预判因素的筛选及分析

目的:设计自体牙移植术前难度预判量表,并进行统计学验证。方法:基于文献支持和临床经验总结,对自体牙移植术前难度预判的可能因素进行统计学分析,筛选出相关性较高的11条因素并编制量表,通过96病例进行实际难度判定。采用SPSS 23.0软件包对量表进行信度和效度检验。结果:对96例病例进行难度预判的结果进行统计学分析,量表检测的克隆巴赫系数（信度值）为0.853,皮尔逊相关系数（内容效度值）为0.745,KMO值（结构效度值）为0.704,以上检验均有统计学意义。结论:所设计自体牙移植术前难度预判量表合理可行,适用于初学者进行术前难度预判分析。

Screening and analysis of preoperative difficulty predictors for autotransplanation of tooth

PURPOSE:The purpose of this study was to design a difficulty prediction scale before autotransplanation of tooth(ATT)which was verified by statistical analysis.METHODS:Based on the literature and clinical experience,all of the possible factors for difficulty prediction before ATT were summarized.Eleven factors with high correlation were screened out and tabulated.The actual difficulty was verified by clinical cases.Statistical analysis was performed to check the reliability and validity of the scale with SPSS 23.0 software package.RESULTS:Data were expressed as follows,Cronbach's alpha(reliability value)was 0.853,Pearson's correlation coefficient(PCCs,content validity value)was 0.745,and Kaiser-Meyer-Olkin(KMO,structural validity value)was 0.704.CONCLUSIONS:The preoperative difficulty prediction scale designed for ATT is reasonable and feasible.It is suitable for residents to make analysis of preoperative difficulty prediction.