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