CAJ | 학술논문

目的研究下颌第二磨牙C形根管系统的对称情况。方法选取年满18周岁，自出生一直在山东境内居住且具有双侧下颌第二磨牙者，拍摄X线片，根据C形根管系统的X线特征，判断其对称性。结果879例调查者中下颌第二磨牙中C形根管系统有74．35％呈现对称性。结论山东人下颌第二磨牙中，具有C形根管系统的牙齿具有较高对称性，有利于临床医师通过一侧牙根的解剖来判断对侧同名牙的根管解剖形态，对于提高下颌第二磨牙治疗的成功率具有重要的临床意义。
목적연구하합제이마아C형근관계통적대칭정황。방법선취년만18주세，자출생일직재산동경내거주차구유쌍측하합제이마아자，박섭X선편，근거C형근관계통적X선특정，판단기대칭성。결과879례조사자중하합제이마아중C형근관계통유74．35％정현대칭성。결론산동인하합제이마아중，구유C형근관계통적아치구유교고대칭성，유리우림상의사통과일측아근적해부래판단대측동명아적근관해부형태，대우제고하합제이마아치료적성공솔구유중요적림상의의。
Objective To investigate the symmetry research of C -shaped root canal system in Mandibular second molars on native people of Shandong.Methods Choose native people more than 18 years old of Shandong with as study objects.After filming the X-ray of Mandibular second molars,the symmetry of C -shaped root canal system is verdicted according to its radiographic features.Result Of the 879 study objects,the number of mandibular second molars with C -shaped root canal sys-tem bilaterally is 200,the incidence is 74.35%.Conclusion The high incidence of C-shaped root canal system bilaterally in Shandong natives’mandibular second mo-lars can help dentist diagnose the root canal anatomical configuration according to the shape of root canal cantralaterally ,in favor of improving the successful rate of root canal treatment of Mandibular second molars.