应用生物电阻抗法评价种植体周围骨缺损的动物实验研究

The evaluation of peri-implant bone defects with bioelectrical impedance in canine

目的:研究骨缺损种植体周围的生物电阻抗信息。方法:在6只杂种犬双侧上颌第二前磨牙近中窝即刻植入同型种植体,建立非骨缺损模型与不同面积的骨缺损模型,测量生理状态下种植体到对侧口角之间的电阻抗值,对比骨缺损组与非缺损组之间的电阻抗值,以及不同面积骨缺损组之间的电阻抗值。结果:非缺损组电阻抗值大于骨缺损组(P<0.05),骨缺损面积大者电阻抗值小(P<0.05)。结论:电阻抗可用来反映种植体周围有无骨缺损以及区分骨缺损面积大小。

Objective：To measure the bioelectrical impedance around the dental implants with bone defects.Methods：Bilateral maxillar second premolar were extracted in 6 native mongrel dogs,implants were placed immediately with or without bone defect of corresponding alveolar bene.Impedance value（IV）between the implant and contralateral mouth corner was measured by LCR TEST-ER.IVs were compared and analyzed by SPSS.Results：IVs of bone defect group were bigger than that of control group（P 〈0.05）, in largger defect group were smaller than that in smaller group（P 〈0.05）.Conclusion：Bioelectrical impedance can be used as an evaluation of peri-implant bone defects and the size of bone defect.