title: Staining technique for teaching preparation depth in natural teeth.
mesh_terms: D003737:Dental Cavity Preparation / Q000379:methods*; D003743:Dental Enamel / Q000033:anatomy & histology; D003804:Dentin / Q000033:anatomy & histology; D003814:Dentistry, Operative / Q000193:education; D006801:Humans; D013194:Staining and Labeling / Q000379:methods*; D013663:Teaching / Q000379:methods*