锥形束CT对磨牙根管治疗后牙根纵裂诊断的临床评价  

Clinical Evaluation of Vertical Root Fracture in Root Canal Treated Molars by Cone Beam Computed Tomography

作　　者：朱丽红 秦念红 林爱娟 范海东 翁汝连 彭红 

机构地区：[1]暨南大学第二临床医学院深圳市人民医院口腔医学中心,广东深圳518020

出　　处：《口腔医学研究》2013年第7期620-622,626,共4页Journal of Oral Science Research

摘　　要：目的:探讨锥形束CT(cone beam computed tomography,CBCT)对磨牙根管治疗后牙根纵裂诊断的准确性及根裂周牙槽骨缺损的情况,为临床提供适宜的检查方法。方法:回顾性对比研究41颗离体牙明确诊断为牙根裂的X线根尖片和锥形束CT,观察其对牙根裂判断的敏感度以及对牙槽骨缺损部位的定位。结果:CBCT显示41颗根裂中明确根裂的32颗(78.05%),可疑6颗(14.63%),非根裂3颗(7.32%),CBCT与X线根尖片之间存在统计学差异(P<0.05);CBCT可以准确判断牙槽骨缺损位于颊侧或舌侧,而X线根尖片则不能显示。结论:CBCT在磨牙根管治疗后牙根裂的诊断中明显优于X线根尖片。Objective： To evaluate the accuracy of vertical root fracture（VRF） after root canal treated（RCT） molars by cone beam computed tomography（CBCT） and periapical radiography.Methods： 41 VRFs after root canal treated molars were selected for the study.Their periapical radiography,CBCT and alveolar bone defection were investigated.Results： In CBCT images,32（78.05%） molars were diagnosed as defined fracture,6（14.63%）molars were diagnosed as probable fracture,3（7.32%）molar was diagnosed as non-fracture,There is significant difference between CBCT and periapical radiography（P0.05）.However,the alveolar bone defects in lingual-buccal orientation could be distinguished clearly on CBCT.Conclusion： CBCT is superior to periapical radiography in detection of vertical root fracture and alveolar bone defects in molars after being treated root canal.

关 键 词：锥形束CT 牙根纵裂 X线根尖片 

分 类 号：R816.98[医药卫生—放射医学]