Method for increasing the durability of dental prosthesis

The method involves bringing compressive stresses into the surface layer of these parts by mechanical action. These stresses are brought about by shot-peening of the layer concerned. Specimen rods made from different materials and having a length of 40 mm and a diameter of 2.5 mm are shot-pinned wit...

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Bibliographische Detailangaben
Hauptverfasser:	GRAU, FRANZ-JOSEF, KIESE, JUERGEN, LANGE, GERLINDE
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE BANDAGES, DRESSINGS OR ABSORBENT PADS CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS CHEMISTRY DENTISTRY DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS FERROUS OR NON-FERROUS ALLOYS FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS HUMAN NECESSITIES HYGIENE MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MEDICAL OR VETERINARY SCIENCE METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PROSTHESES TREATMENT OF ALLOYS OR NON-FERROUS METALS TREATMENT OR PROTECTION OF EYES OR EARS
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Beschreibung
Zusammenfassung:	The method involves bringing compressive stresses into the surface layer of these parts by mechanical action. These stresses are brought about by shot-peening of the layer concerned. Specimen rods made from different materials and having a length of 40 mm and a diameter of 2.5 mm are shot-pinned with glass balls having a grain size of between 420 mu m and 590 mu m. The spray pressure is in the order of 0.7 MPa when the jet is at a distance of 35 mm from the specimen and last for 45 seconds. The specimen rotates once per second about its axis.