title: Characterization of wear of tungsten carbide burs.
abstract: On the basis of this study, the following conclusions can be made:--Although the primary cause of the diminution of cutting efficiency when composite restorations are cut is due to abrasion, a secondary cause is the adhesion of the melted resin to the flutes.--Amalgams and tooth structures cause significantly less wear to burs than composite restorations.--The design of burs currently used is probably a poor choice to remove composite restorations.
mesh_terms: D002244:Carbon; D003188:Composite Resins; D003723:Dental Amalgam; D003737:Dental Cavity Preparation / Q000295:instrumentation; D003762:Dental Instruments; D006801:Humans; D013499:Surface Properties; D014414:Tungsten
chemical_list: D003188:Composite Resins; D002244:Carbon; D003723:Dental Amalgam; D014414:Tungsten