Application of Cone Beam Computed Tomography in Reducing the
Risk of Interior Alveolar Nerve Injury
ZHAO Bin1, WANG Ji-hong2
1.CT/MR Room, the Second Hospital
of Tangshan, Tangshan Hebei 063000,
China; 2.Operating Room, the Third
Hospital of Tangshan, Tangshan Hebei
063000, China
Abstract:Objective To discuss the application value of cone beam computed tomography (CBCT) in
reducing the risk of inferior alveolar nerve injury in patients who have underwent mandibular third molar
extraction surgery. Methods The research selected patients with mandibular canal overlapped by third
molar root canal from March 2014 to April 2015. The assessment showed that there were sixty-four cases
of inferior alveolar nerve injury, among which there were eighty-one sides of impacted mandibular third
molars. All the sixty-four patients underwent CBCT examination. Two experienced denta surgeon and two
radiologists were chosen to conduct preliminary assessment of the risk of interior alveolar nerve injury in
patients undergoing third molar extraction surgery based on CBCT and panoramic tomography images.
Meanwhile the correspondent surgical plans were designed, the design schemes proposed by the two
groups of physicians were tested and evaluated. Results Compared with images of panoramic radiography,
the CBCT image analysis could show the three dimensional images of the spatial distrubution between
mandibular canal and impacted molars and thus allowed physicians to make surgical planning more accurate
(P<0.001). Conclusion During the risk assessment of interior alveolar nerve injury in patients underwent
mandibular third molar extraction surgery, the images of CBCT was more discriminating compared with
images obtained from panoramic radiography, which could effectively help physicians choose more
appropriate surgical plans.
赵宾1,王继红2. CBCT在减少下牙槽神经损伤风险中的
应用[J]. 中国医疗设备, 2016, 31(4): 70-72.
ZHAO Bin1, WANG Ji-hong2. Application of Cone Beam Computed Tomography in Reducing the
Risk of Interior Alveolar Nerve Injury. China Medical Devices, 2016, 31(4): 70-72.