Methods 158 allergic dentins of 82 patients were treated by PEC4O5 dental desensitization Apparatus, by comparision, 44allergic dentins of 30 patients treated by AGI (iodide of argentum ).

• 方法采用PEC405牙齿脱敏仪对82例158个患牙治疗，与用碘化银法对3O例44个患牙治疗进行对照。