praesentation_dental_revised英文文献资料.ppt

crown over stump * studies concerning the effect of amalgam fillings to the human body but there is no evidence for an actual danger of amalgam fillings * * shrinkage: possibility of fissures new caries * thin shell of porcelain * tarnish = anlaufen * non-noble = nicht edel wear = Abnutzung * is not applicable to instruments and appliances * * static immersion test:test in which the sample is exposed to a corrosive solution tarnish:surface discolouration due to the interaction between metal and its environment * advice to the slides from Kerstin * ISO 6877:2006 Root-canal obturating points Packaging Marking and information to be supplied by manufacturer Cavity Bases and Liners Used primarily to protect the pulp and to aid the pulp in recovering from irritation resulting from cavity preparation. Liners and bases are placed when the cavity preparation is completed, just before insertion of the filling material. A cavity base against bacterial (caries), chemical and thermal stimulus between the cavity and the filling. Use of phosphat- or glass ionomer cement. * Abteilung: * Cavity Bases and Liners Cavity varnish: Is a liner used to seal the dentinal tubules to prevent microleakage. Has an organic solvent of ether or chlorophorm that quickly evaporates, leaving the resin as a thin film over the preparation. More and more replaced by dentin bonding agents. * Abteilung: * Bonding Agents Dentin bonding agents are resin materials used to make a dental composite filling material adhere to bond to both dentine and enamel → adhesive bonding. Principle: A low viscous resin monomer makes a bond to dentin and enamel on one side and to the composite filling material on the other. The key stages of developing dentine bonding are: etching of tooth structure with etchant gel (most phosphoric acid) to create micro mechanical roughness in enamel and demineralising dentine → primer → bonding. * Abteilung: * Tooth Bleaching Tooth bleaching (tooth whiteni