锥形束CT与根尖X线片对牙根纵裂诊断价值的对比研究

A comparison of cone-beam computed tomography with periapical radiography in detection of vertical root fracture

目的:对比研究牙科锥形束CT(CBCT)与普通根尖X线片在牙根纵裂诊断中的价值。方法:对2009-11—2010-10在我科经临床检查疑似牙根纵裂的69例病人(84个患牙)的根尖X线片及CBCT图像资料进行回顾性分析。由2位有经验的牙体牙髓科主治医生独立阅片,商讨达成一致后,与根尖切除、牙周翻瓣、拔除术等外科手术所见结果进行比较。并将CBCT与根尖X线片对牙根纵裂的诊断结果进行统计学分析。结果:CBCT诊断根裂的阳性检出率、灵敏度、准确度分别为82.1%、87.3%、88.1%,而根尖X线则为39.3%、41.8%、45.2%,差异有统计学意义(P<0.05)结论:CBCT与根尖X线片相比可更准确的诊断牙根纵裂,具有重要的临床应用价值。

AIM：To compare the diagnostic potential of cone-beam computed tomography（CBCT） with conventional periapical radiography（PR） for detecting vertical root fractures（VRF＇s）.METHODS：Sixty-nine patients with 84 teeth in which vertical root fracture was clinically suspected underwent periapical radiography and CBCT.Two experienced endodontists independently analyzed each case and reached a consensus diagnosis.The results were compared with intraoperative findings and analyzed statistically.RESULTS：The positive rate,sensitivity and accuracy for VRFs of CBCT were 82.1%,87.3%and 88.1%,while the values of PRS were 39.3%,41.8%and 45.2%,respectively（P0.05）.CONCLUSION：CBCT is superior to periapical radiography in the detection of vertical root fractures.