aahughes
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Dental materials Mind Map on DENTAL MATERIAL, created by aahughes on 24/03/2014.

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aahughes
Created by aahughes about 11 years ago
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DENTAL MATERIAL

DENTAL MATERIALDENTAL COMPOSITES: fill material and sp trayConsits of: RESIN, FILLER, COUPLING AGENTFIBRE REINFORCED MATERIALS:type of compositeconsits of: FIBRES OF HIGH STRENGTH AND MODULUSEMBEDDED IN A BONDED MATRIXTESTS USED TO CHARACTERISE MATERIALSTENSILE = for applied to elongate rodCOMPRESSIVE = force applied, not recommended for brittle materialsDIAMETRAL TENSILE STRENGTH = for brittle mat where conventional tensile n/aFLEXURAL = determines how material bends (3points)VICKERS,BRINELL,KNOOP = surface hardness testLarge num - low hardness, small num - high hardnessSHEAR BOND STRENGTH = adhesive failure. Pebdulum swing #'s specimenSURFACE ROUGHNESS = Profilometer asses surface characteristicsTHERMAL PROPERTIES = thermal conductivity (K) rate of heat transferRHEOLOGICAL PROPERTIESStudy of the flow of materialsie Luting cement , flowable compStudy of VISCOSITY and how it vaaries with rate of shear and timeDILATANT: viscosity INCREASES with applied pressureNEWTONIAN: viscosity remains CONSTANT with applied pressurePSEUDOPLASTIC= viscosity DECREASES with applied pressureCHEMICAL PROPERTIES - CORROSIONChemical reactivity of metals and alloysAn electrolytic propertyShould dispaly good corrosion resistanceBIOLOGICAL PROPERTIESlab screening, in vivo test, human randomised cotrolled trialIdeal material - non toxic, non irritant to the pulp, non cariogenicDouble click this nodeto edit the textClick and drag this buttonto create a new node