Materials Science for Dentistry (Ninth Edition)
Woodhead Publishing Ltd, April 2009, Pages: 688
B W Darvell, formerly University of Hong Kong, Hong Kong
… a truly excellent book that covers the topic in greater depth and with greater authority than other dental texts.
Professor Timothy F. Watson, King’s College London, UK
There is no doubt – it is the best in the field.
Professor Nikhil K. Sarkar, Louisiana State University, USA
- offers a fundamental understanding of the materials on which dentistry depends, covering their structure and chemistry
- extensively revised to keep it up-to-date with the latest developments
- this new edition continues its reputation as the most authoritative reference for dentistry students
Materials Science for Dentistry has established itself as a standard reference for undergraduate and postgraduate courses in dentistry. It provides a fundamental understanding of the materials on which dentistry depends, covering those aspects of structure and chemistry which govern the behaviour and performance of materials in use. Particular materials discussed include gypsum, polymers, acrylic, cements, waxes, porcelain and metals. Other chapters review topics such as surfaces, corrosion, mixing, casting, cutting and bonding as well as mechanical testing. This edition, which adds a chapter on further aspects of mechanical testing, has been extensively revised with, for example, new material on condensation silicone and phosphate-bonded investment chemistries, mixing, MTA™ and alternative radiographic imaging techniques.
Now in its ninth edition, Materials Science for Dentistry continues its reputation as the most authoritative available reference for students of dentistry. It is also a valuable resource for academics and practitioners in the field.
Mechanical testing
Initial ideas. The equations of deformation. Plastic deformation. Work of deformation. Modelling. Strength testing. Griffith’s law. Hardness. Dynamic behaviour. Impact. Creep. Fatigue. Elastic moduli. Comparative properties. Ideality.
Gypsum materials
Basic reactions. Mixing liquid. Dental products. Mixing proportions. Setting dimensional change. Setting reaction. Modifiers. Porosity. Wet or dry? Storage. Setting time.
Polymers
Basic structure. Configuration and conformation. Viscosity. Glass transition. Time-temperature equivalence. Plasticizers and cross-linking.
Rheology
First thoughts. Elasticity. Newtonian flow. The Maxwell body. The Kelvin-Voigt body. Viscoelasticity. Classification of flow behaviour. The compression set test. Fillers. Stokes’ law. Poiseuille’s law.
Acrylic
Polymerization. Heat-cured acrylic. Cold-cured resins. Inhibitors. Cracks and crazes. Modifications.
Resin restorative materials
Direct acrylic resin restorative materials. The effects of fillers. Filler loading. Resin chemistry. Light-cured materials. Oxygen inhibition.
Flexible impression materials
Basic requirements. Deformation. Effects of fillers. Polysulphide. Polyether. Silicones. Polysaccharides. Agar. Alginates. Water gain and loss. Stress set. Other accuracy issues. Mould seal
Composition and phase diagrams
Plotting composition. States and phases. The phase rule. Critical points.
Cements and liners
General principles. Zinc Oxide – Eugenol. Background chemistry. Cements as composite materials. Zinc phosphate. Zinc polycarboxylate. Ion-leachable glasses. Glass ionomer cement. Film thickness. Calcium hydroxide liners. Cavity varnish. MTA.
Surfaces
Wetting. Capillarity. Aspects of chemical bonding. The hydrogen bond. Dental adhesives. Enamel and dentine etching and bonding. Fluoride. Surfactants.
Metals I: structure
What is a metal? Freezing. Crystal structure. Grain structure. Slip. Dislocations.
Metals II: constitution
Segregation. Metallography. Eutectics. Phase diagram conventions and layout. The Cu-Sn System.
Corrosion
Basic considerations. Polarization. Cathode processes. Corrosion protection. Passive metals. Other factors. Deliberate corrosion.
Silver Amalgam
Basic setting reactions. Alloy powder manufacture. Cooling rate and constitution. Mixing proportions. Constitution of set amalgam. Dimensional changes. Mechanical properties. Porosity. Corrosion. Quality of work.
Mixing
Amalgamation. Amalgam mixer analysis. Other capsule products. Alginate proportioning. Tubes. Other powder-liquid products. Theory. Spatulas
Waxes
Chemistry. Properties. Flow. Burn out. Impression compound. Other applications.
Casting investments
Requirements. Chemistry of silica. Gypsum-bonded investments. Phosphate-bonded investments. Silica-bonded investments. Ring liner. Porosity.
Casting
Models and investments. Metal casting. Physics of casting. Dimensional considerations and defects. Flame.
Casting alloys
Gold alloys. Chromium alloys.
Cutting, abrasion and polishing
Background. Bonded abrasives. Cutting tools. Erosion. Electrolytic polishing. Roughness. Heating. Diamond.
Steel and cermet
Carbon steel. Stainless steel. Cermet.
Soldering and welding
Definitions and conditions. Fluxes. Solderd design and selection. Amalgamation.
Mechanics
Work and moment. Simple beams. The second moment of inertia. Deflections of loaded beams. The finger-spring analysed. Coils and braiding. Hand instruments.
Light and colour
The sensation of colour. The chromaticity diagram. Colour specification. Colour matching in practice. Physics of light. Chemistry of colour.
Porcelain
Structure. Firing reactions. Alumina strengthening. The firing process. Strengthening treatments. Metal – ceramics. Colouring. Boric oxide. Other approaches. Etching.
Radiography
Atomic structure. X-ray generation. Lambert’s law. Absorption and scattering. Radiographic film density. Experimental attenuation coefficient. Screens. Image properties. Alternative imaging techniques. Digital images.
More polymers
Polyisoprene. Polysaccharides. Polypeptides. Polyesters.
More metals
Titanium. Nickel-titanium. Metal forming. Pure gold. Mirrors. Mercury. Beryllium. Other alloys. Silver.
More mechanical testing
Shear. Plastic-brittle transition. Bend strength
Dr Brian W. Darvell DSc CChem CSci FRSC FIM FSS FADM is former Reader in Dental Materials Science at The University of Hong Kong, China.
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