Development of dispersion layers for dental drills with reduced nickel release

Without rotating instruments, for example diamond-coated drills with a core made of stainless steel, the dental routine would be unimaginable, since these are used in almost every activity and thus indispensable professional practice. Unfortunately, such release Nickel particles to high content into cooling water drill. Values up 1.3 mg/l were found by ICP – OES drillers which is course also transferred patient's oral cavity possible severe negative effects. Therefore, novel plating procedures have developed increase patients (and dentists) safety during treatment. Dispersion layers hard metal Tungsten carbide (WC) on steel blanks deposited following two synthesis routines (i) Plasma-Electrolytic Oxidation (PEO) (ii) galvanic out Watts bath. Both accomplished using water-based electrolytes. In order verify applicability coatings, tests-drills under defined conditions plastic teeth sake reproducibility. Commercially produced compared newly plated ones Scanning Electron Microscopy (SEM), Atomic Force (AFM) drilling was examined heavy residues Inductively Coupled Plasma (ICP) analytics. The resulting grinding patterns investigated light microscopy SEM. It could shown that dispersion procedure showed reduced commercial driller factor 7.6 13.4 PEO treatments. Following clinical significance bath better WC particle distribution surface abrasive properties experiments drillers. addition use much less from treated ones. By optimising condition further devices significantly can benefit patients.