【摘要】 选择北京大学口腔医院第二门诊部锥形束CT影像库存的4 550颗阻生下颌第三磨牙,依据其不同阻生方向分为6组,统计远中舌根出现概率,经过SPSS 19.0软件分析及卡方检验,发现下颌第三磨牙的远中舌根出现概率为5.38%,不同阻生方向的第三磨牙远中舌根出现概率不同。更多还原

【Abstract】 Cone beam CT( CBCT) data of 4 550 impacted mandibular third molars were divided into 6 groups by the direction of teeth impaction. Analyzed by SPSS 19. 0 statistical package and Pearson Chi-square Test,the incidence of disto-lingual roots was 5. 38% and was various with different impation direction.更多还原