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.
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