Early dentin caries under intact enamel surface ●T= Translucent zone ●B= Body of the lesion o R=Reparative dentin P o P=Pulp Department of Oral Pathology, Shandong University 5 http://1.51.214.13Department of Oral Pathology, Shandong University 5 http://1.51.214.13 T=Translucent zone B=Body of the lesion R=Reparative dentin P=Pulp