25 Result(s) for 'SubCategory='Dental Materials''
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Chapter-01 Dentistry and Dental Materials by Manappallil John J (2010) Edition : 3/e

Dental materials play an integral role in dentistry. Besides use in the oral cavity many materials are also used in the laboratory to aid in the fabrication of appliances or prostheses. Dentistry over the years has evolved into a highly complex field and materials play a crucial role in every aspect of treatment. Most dental treatment may be divided into th... [More]

Chapter-02 Basic Nature and Properties of Dental Materials by Manappallil John J (2010) Edition : 3/e

All materials are made up of atoms. All dental restorations, whether they be ceramic, plastic or metal are built from atoms. If the reaction of a material and its properties are to be predicted, a basic knowledge of matter is essential. Basic nature and properties of dental materials; Forms of matter, Interatomic bonds, Wetting, Poission’s ratio, Clinical co... [More]

Chapter-03 Biological Considerations of Dental Materials by Manappallil John J (2010) Edition : 3/e

The science of dental materials must include a knowledge and appreciation of the biological considerations that are associated with selection and use of materials designed for the oral cavity. Strength and resistance to corrosion are unimportant if the material irritates or injures the pulp or soft tissue. The biological characteristics of dental materials c... [More]

Chapter-04 Tarnish and Corrosion by Manappallil John J (2010) Edition : 3/e

Except for a few, pure metals do not occur naturally. They occur in the form of minerals such as oxides and sulfides and these have to be refined to produce the pure metal. Most pure metals attempt to reconvert to the combined state. The process by which this takes place is called corrosion. One of the primary requisites of any metal that is to be used in th... [More]

Chapter-06 Cavity Liners and Varnish by Manappallil John J (2010) Edition : 3/e

A cavity liner is used like a cavity varnish to provide a barrier against the passage of irritants from cements or other restorative materials and to reduce the sensitivity of freshly cut dentin. They are usually suspensions of calcium hydroxide in a volatile solvent. Upon the evaporation of the volatile solvent, the liner forms a thin film on the prepared t... [More]

Chapter-07 Dental Cements by Manappallil John J (2010) Edition : 3/e

Dental cements are materials of multiple uses including restorations, luting and therapeutic. They are generally materials of comparatively low strength, but have extensive use in dentistry. The first dental cement is said to have been introduced in 1785 by Sorel who created the ‘zinc-oxide-chloric-cement’. Nearly a hundred years later Rostain and then Flak ... [More]

Chapter-08 Dental Amalgam by Manappallil John J (2010) Edition : 3/e

An amalgam is defined as a special type of alloy in which mercury is one of the components. Mercury is able to react with certain alloys to form a plastic mass, which is conveniently packed into a prepared cavity in a tooth. This plastic mass hardens and is stronger than any dental cement or anterior filling material. Dental amalgam is the most widely used f... [More]

Chapter-09 Direct Filling Gold by Manappallil John J (2010) Edition : 3/e

Prior to the discovery of amalgam, pure gold was very popular as a filling material. Its use was documented in Europe in the 15th century. Robert Woofendale is credited to have introduced it to the USA in 1766 on his arrival from England. However, its use became widespread in the USA only towards the beginning of the 19th century. It is the most noble of met... [More]

Chapter-10 Composite Resins and Bonding Agents by Manappallil John J (2010) Edition : 3/e

The composite is a system composed of a mixture of two or more macromolecules which are essentially insoluble in each other and differ in form. The composite material’s properties are superior to those of its individual components, e.g., fiberglass has a resin matrix which is reinforced by glass fibers. The resulting composite is harder and stiffer than the ... [More]