锥形束CT对乳磨牙根管形态的初步研究

Preliminary study on root canal morphology of deciduous molars by CBCT

目的乳牙根管形态复杂并且不易获得完整的标本,本研究通过CBCT对乳磨牙根管形态进行初步研究。方法本院放射影像科CBCT进行分析,记录上下颌第一乳磨牙,第二乳磨牙的根管形态。结果共检查儿童207例,上颌第一乳磨牙均为三根管形态,上颌第二乳磨牙80.31%为三根管形态,19.18%为四根管,0.51%为五根管,下颌第一乳磨牙二根管,三根管,四根管分别占7.03%,46.62%,46.35%,下颌第二乳磨牙三根管,四根管分别占3.95%,96.05%。结论乳磨牙根管形态相当复杂,临床诊疗过程中需认真探查。

Objective Deciduous root canal morphology was complex and difficult to acquire complete samples. This study made preliminary research on the root canal morphology of deciduous molars by CBCT. Methods The images were from radiology depart- ment. CBCT imaging system was used to examine root canal morphology of maxillary and mandibular first and second deciduous molars. Results 207 children were examined by CBCT. All maxillary first deciduous molars had three root canals. 80.31% of the maxillary second deciduous molars had three canals, while 19.18% had four canals and 0.51% had five canals. Of mandibular first deciduous molars, 7.03% had two canals, 46.62% had three canals, and 46.35% had four canals. Of mandibular second deciduous molars, 3. 95% had three canals and 96.05% had four canals. Conclusions Root canal morphology of deciduous molars is complex, and serious examination is needed in clinical diagnosis and treatment.