CAJ | 학술논문

选择北京大学口腔医院第二门诊部锥形束CT影像库存的4550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。
선택북경대학구강의원제이문진부추형속CT영상고존적4550과조생하합제삼마아，의거기불동조생방향분위6조，통계원중설근출현개솔，경과SPSS 19．0연건분석급잡방검험，발현하합제삼마아적원중설근출현개솔위5．38％，불동조생방향적제삼마아원중설근출현개솔불동。
Cone beam CT(CBCT)data of 4 550 impacted mandibular third molars were divided into 6 groups by the direction of teeth im-paction.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.