title: [A basic study of the abrasion of preformed primary crown and composite resin].
mesh_terms: D000818:Animals; D002417:Cattle; D003188:Composite Resins; D003442:Crowns; D006244:Hardness; D008963:Molar; D014072:Tooth Abrasion; D014094:Tooth, Deciduous
chemical_list: D003188:Composite Resins