作者用龋蚀检查液进行20颗龋齿染色,可将牙本质龋分为内、外二层。进行光镜和电镜观察,可见外层牙本质龋(被染为红色)有大量细菌感染,脱钙明显,牙本质小管内充满细菌和其它无机盐类物质.内层牙本质龌未见细菌感染,管间牙本质可见脱钙.本实验证明,用龋蚀检查液染色可作为临床治疗时去除感染牙本质(外层)的可靠依据. The authors used caries check solution for 20 caries staining, the dentine caries can be divided into inner and outer layers. Light microscopy and electron microscopy showed that the outer dentine caries (red dyed) have a large number of bacterial infections, decalcification obvious, dentin tubules filled with bacteria and other inorganic salts .Internal dentin 龌 no bacterial infection , Visible between the tube decalcification dentin.This experiment shows that the use of caries check solution staining can be used as a clinical treatment of infected dentine (outer) reliable basis.